Complete Catalog

All Online Tools Directory

Search and launch from 214 free, client-first web tools. No software installation, no accounts, and transparent data privacy.

Showing 214 tools

Date & Time

Age Calculator

Calculate exact chronological age in years, months, days, hours, and minutes from birth date at any target date.

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Images, Video & Audio

Background Remover

Remove image backgrounds automatically with high-precision AI. Isolate subjects cleanly and export transparent PNGs in seconds.

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Developer Tools

Base64 Encode & Decode

Encode and decode Base64 text and binary data online with UTF-8 character support, URL-safe Base64, and instant clipboard copying 100% in your browser.

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Seasonal Events & Holidays

Black Friday 2026 Deals & Countdown Calculator

Live countdown to Black Friday 2026 with a 3-step stacking discount, sales tax, and genuine deal savings calculator.

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Everyday Utilities

Block Scoreboard Maker

Create visual card-based scoreboards with large digital scores, custom team colors, podium rankings, and quick-tap increment buttons. Perfect for games, trivia, and classrooms.

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Health & Fitness

BMR Calculator

Calculate your Basal Metabolic Rate (BMR) — the minimum calories your body needs at complete rest. Uses the accurate Mifflin-St Jeor equation.

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Health & Fitness

Calorie Calculator

Estimate your daily calorie needs to maintain, lose, or gain weight based on body stats and activity level. Uses the Mifflin-St Jeor formula.

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Seasonal Events & Holidays

Christmas 2026 Countdown & Secret Santa Generator

Live countdown to Christmas 2026 with a 100% private in-browser Secret Santa generator, pairwise exclusions, budget rules ($20–$25 office presets), and gift budget planner.

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Developer Tools

Code to Image Converter

Transform source code snippets into gorgeous, shareable images for Twitter, LinkedIn, blog posts, and presentations with customizable gradient backgrounds and themes.

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Finance & Money

Compound Interest Calculator

Calculate compound interest growth with customizable compounding periods and regular deposits.

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Documents & PDF

Compress PDF

Compress and reduce PDF file size online without quality loss.

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Developer Tools

CSS Formatter & Beautifier

Format, beautify, and minify CSS code online. Clean up messy stylesheets, indent rules, sort CSS properties alphabetically, and compress stylesheet files client-side.

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Developer Tools

cURL to Code Converter

Convert cURL command lines into production-ready code snippets for JavaScript Fetch, Axios, Python Requests, Go net/http, PHP cURL, and Node.js.

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Finance & Money

Currency Converter & Exchange Rates

Convert between 150+ world currencies with live, real-time exchange rates.

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Date & Time

Date Calculator

Calculate days between dates or add/subtract years, months, weeks, and days simultaneously from any calendar date.

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Documents & PDF

Extract PDF Pages

Copy selected pages from a PDF into a new document.

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Images, Video & Audio

Favicon Generator

Convert logos or images into multi-resolution favicon packs (16x16, 32x32, 48x48, 180x180), multi-layer .ico binaries, and ready-to-use HTML code.

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Developer Tools

HTML Encoder / Decoder

Encode special characters into safe HTML entities or decode HTML entities back into plain readable text with support for named, decimal, and hex entities.

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Developer Tools

HTML Formatter & Beautifier

Format, beautify, and minify HTML, XML, and SVG markup with clean indentation, comment stripping, and real-time live preview.

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Health & Fitness

Ideal Weight Calculator

Calculate your healthy ideal weight range using 4 clinical medical formulas (Devine, Robinson, Miller, Hamwi) and WHO BMI guidelines.

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Images, Video & Audio

Image Compressor

Compress JPEG, PNG, and WebP images to reduce file size without noticeable quality loss.

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Images, Video & Audio

Image Converter

Convert images between JPEG, PNG, WebP, AVIF, and TIFF formats with fast, secure server-side processing.

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Images, Video & Audio

Image Resizer

Resize images to exact pixel dimensions, aspect ratios, or percentage scaling directly in your browser.

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Images, Video & Audio

Image Upscaler (High-Fidelity Resampling — Non-AI)

Enlarge photos 2× to 4× with stepped multi-pass bicubic interpolation and unsharp masking. Sharp, clear enlargement with zero hallucinated AI artifacts.

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Developer Tools

JavaScript Formatter & Beautifier

Format, beautify, and minify JavaScript and TypeScript code online. Clean up indentation, standardize semicolons and quotes, and compress scripts 100% in your browser.

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Developer Tools

JavaScript Minifier

Compress, shrink, and minify JavaScript and ECMAScript code online. Strip whitespace and comments while preserving strings and regex literals for faster web page loads.

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Developer Tools

JSON Diff & Compare Online

Compare two JSON structures side-by-side with automatic key sorting, colored difference highlights, and change breakdown.

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Developer Tools

JSON Formatter & Validator

Format, beautify, validate, and minify JSON data online with instant syntax error highlighting and tree inspection.

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Developer Tools

JSON to CSV / CSV to JSON Converter

Convert JSON to CSV and CSV to JSON online. Transform array records into spreadsheet-compatible CSV tables with delimiter options, nested object flattening, and instant download.

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Developer Tools

JSON to YAML / YAML to JSON Converter

Convert JSON to YAML and YAML to JSON online. Fast bi-directional serialization with indentation control, syntax error checking, and zero server uploads.

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Developer Tools

JSON Tree Viewer

Explore, navigate, and inspect complex JSON payloads with an interactive collapsible tree viewer, type badges, node search, and JSON path copying.

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Developer Tools

JSON Validator & Syntax Linter

Validate JSON syntax online with line and column error indicators, RFC 8259 compliance checks, structure tree inspection, and one-click auto-repair for common syntax errors.

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Developer Tools

JWT Debugger & Decoder

Decode, inspect, and verify JSON Web Tokens (JWT) online. View claims, expiration dates, signature verification, and build tokens safely 100% in your browser.

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Everyday Utilities

Live Leaderboard & Scoreboard Maker

Create interactive, real-time scoreboards and live leaderboards. Store scores in fast cloud Redis, share read-only live spectator links, customize rankings, and track expiration (5-day alive TTL).

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Finance & Money

Loan Calculator

Calculate monthly loan payments, amortized fixed schedules, and total interest cost.

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Finance & Money

Loan Comparison Calculator

Compare two loan options side by side with amortized fixed payments and total interest.

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Developer Tools

Markdown Preview & Editor

Live preview, edit, and convert Markdown (.md) documents online. Supports GitHub Flavored Markdown (GFM), tables, task lists, code blocks, HTML export, and real-time word counting.

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Images, Video & Audio

Merge & Combine Images

Combine multiple images side by side, stacked vertically, or in a neat grid. Customize margins, spacing, rounded corners, and download high-resolution JPG or PNG.

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Documents & PDF

Merge PDF

Combine multiple PDF files in your chosen order without uploading them.

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Finance & Money

Mortgage Calculator

Estimate monthly mortgage payments including property taxes, home insurance, and PMI.

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Everyday Utilities

Online Calculator

Standard and scientific online calculator with calculation history and keyboard shortcuts.

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Images, Video & Audio

Passport & ID Photo Maker

Crop and format passport, visa, and ID photos with standard dimension presets, biometric head guides, and 300 DPI 4x6" printable sheet layouts.

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Everyday Utilities

Password Generator

Generate strong, cryptographically secure random passwords in bulk with custom length, bracket exclusion, and unique character options.

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Everyday Utilities

Password Strength Checker

Evaluate password strength, entropy bits, brute-force crack time, and potential vulnerabilities.

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Finance & Money

Paycheck & Take-Home Pay Calculator

Calculate net take-home pay after federal taxes, social security, and deductions.

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Documents & PDF

PDF to JPG

Convert selected PDF pages into high-quality JPG images.

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Images, Video & Audio

Quick Photo Adjuster & Filters

Adjust brightness, contrast, saturation, and exposure, or apply 1-click aesthetic presets (Vivid, B&W, Vintage, Cyberpunk) with instant live preview.

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Developer Tools

Regex Tester & Debugger Online

Test, evaluate, and debug regular expressions in real-time with visual match highlights, capture group inspection, and quick regex cheat sheets.

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Finance & Money

Retirement Calculator

Estimate future retirement savings, forecast 401(k) and IRA compound investment growth, account for inflation, and check your retirement readiness score.

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Images, Video & Audio

Rotate & Flip Image

Rotate images 90, 180 degrees or straighten by custom angles. Flip photos horizontally or vertically with instant lossless browser processing.

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Documents & PDF

Split PDF

Split a PDF into separate files using custom page ranges.

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Everyday Utilities

Sports Match Scoreboard

Professional head-to-head stadium scoreboard with digital game clock, period tracking, quick scoring (+1, +2, +3), team fouls, timeouts, possession arrow, and arena buzzer sounds.

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Developer Tools

SQL Formatter & Beautifier

Format, beautify, and minify SQL queries online. Standardize uppercase keywords, indent joins and subqueries, and clean syntax client-side with zero data sent to external servers.

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Health & Fitness

TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) — total calories burned per day including activity, NEAT, and digestion. Your true maintenance calorie level.

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Everyday Utilities

Text Comparison Tool

Compare two text snippets or code blocks side-by-side with highlighted character and line differences.

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Seasonal Events & Holidays

Thanksgiving 2026 Countdown & Dinner Budget Planner

Live countdown to Thanksgiving 2026 (November 26) with a home-cooking turkey & sides estimator, and a catered/restaurant dinner budget calculator with guest splitting and tip estimation.

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Date & Time

Time Zone Converter

Convert dates and times across international time zones with DST support.

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Date & Time

Timer, Stopwatch and Pomodoro

Online timer, precision stopwatch, and Pomodoro focus tracker with custom intervals and alarms.

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Everyday Utilities

Unit Converter

Convert length, area, mass, volume, temperature, speed, and time across metric, U.S., and Imperial units.

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Health & Fitness

Universal BMI Calculator

Calculate Body Mass Index (BMI) with both Imperial (lbs/feet) and Metric (kg/cm) units.

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Developer Tools

URL Slug Generator

Transform titles, headings, and product names into clean, SEO-friendly URL slugs with custom separators, stop word removal, and accent transliteration.

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Date & Time

US Events Calendar 2026–2028

Explore all United States federal holidays, state observances, cultural festivals, shopping sales events, and major sports championships throughout 2026, 2027, and 2028.

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Developer Tools

UUID / GUID Generator

Generate secure, cryptographically random Version 4 (v4) and time-ordered Version 7 (v7) UUIDs and GUIDs with custom formatting, bulk batch generation, and live inspection.

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Everyday Utilities

Word Counter & Keyword Density

Count words, characters, sentences, reading time, keyword density, and social media character limits.

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Documents & PDF

Word to PDF Converter

Convert DOCX Word documents into clean, high-fidelity PDF files with secure server-side processing.

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Date & Time

Work Hours & Timecard Calculator

Calculate weekly work hours, single shift durations, time rounding, lunch breaks, overtime, and gross paycheck estimate.

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Developer Tools

XML Formatter & Beautifier

Format, beautify, and minify XML, SOAP, SVG, and RSS documents online. Fix tag indentation, format XML trees, compress markup, and validate syntax 100% in your browser.

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Free Online Games

2048

Slide and merge identical numbered tiles across a 4x4 grid to reach the elusive 2048 high-score tile.

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Documents & PDF

Add Page Numbers to PDF

Insert customizable page numbers into your PDF documents with custom position and styling.

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Health & Fitness

Ambient Sound Mixer & Relaxation

Mix soothing ambient sounds like rain, ocean waves, campfire, and wind with calming animated backgrounds to focus, meditate, or fall asleep.

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Free Online Games

Archery 3D

Draw your bowstring, gauge the shifting crosswinds, and loose arrows into 3D concentric target rings.

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Images, Video & Audio

Audio Recorder and Trimmer

Record microphone audio, trim sound files, and export voice recordings as MP3 or WAV.

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Images, Video & Audio

Avatar Creator

Crop a photo into a circular or square avatar and export it as PNG or JPG.

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Free Online Games

Battleship

Call out grid coordinates to hunt, strike, and sink your opponent's hidden fleet of naval warships.

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Free Online Games

Block Puzzle

Drag and fit polyomino wooden blocks into 8x8 rows and columns to clear lines and keep space open.

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Images, Video & Audio

Blur Image

Blur an image in your browser and adjust the effect strength before downloading it.

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Free Online Games

Breakout

Direct your paddle to bounce steel balls into rows of colored bricks to demolish the wall.

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Health & Fitness

Breathing Exercises

Follow timed breathing exercises with guided inhale, hold, and exhale phases.

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Free Online Games

Breathing Game

Follow guided visual pacing circles through deep inhalation and exhalation cycles to reduce stress.

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Free Online Games

Bubble Pop

Aim and fire colored orbs to match clusters of three or more and clear the descending ceiling.

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Date & Time

Business Days Calculator

Count Monday-to-Friday working days between two dates.

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Everyday Utilities

Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.

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Free Online Games

Checkers

Jump over enemy draughts pieces, make multi-hop captures, and crown your kings on the dark squares.

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Free Online Games

Chess

Master the timeless game of kings with tactical piece maneuvers, pawn structures, and checkmate strategies.

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Free Online Games

Chinese Chess

Command generals, chariots, cannons, and elephants across the central river in ancient Xiangqi warfare.

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Free Online Games

Clicker

Click the giant icon to generate currency, hire automated helpers, and unlock exponential idle upgrades.

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Free Online Games

Color Match

Test your cognitive reaction speed by verifying whether written color names match font ink colors.

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Free Online Games

Connect Four

Drop colored discs into a 7x6 vertical grid to connect four in a row before your opponent.

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Developer Tools

Cronjob Explainer & Generator

Translate crontab schedule expressions into human-readable English, preview upcoming execution dates, and generate cron expressions interactively.

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Images, Video & Audio

Crop Image

Crop images to custom aspect ratios, circle shapes, or social media dimensions.

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Everyday Utilities

Device Test

Test and diagnose screen dead pixels, microphone, webcam, audio speakers, and keyboard input.

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Free Online Games

Dino Runner

Leap over desert cacti and duck beneath pterodactyls in the famous endless obstacle sprint.

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Finance & Money

Discount Calculator

Calculate final sale price, percent or fixed savings, and optional sales tax.

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Documents & PDF

Document Scanner

Scan physical documents with your camera, enhance clarity, extract text with OCR, and export directly as PDF.

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Free Online Games

Dots and Boxes

Connect adjacent grid dots with lines to complete four-sided squares and capture territory.

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Everyday Utilities

Dummy Text & Lorem Ipsum Generator

Generate free dummy text, Lorem Ipsum placeholder paragraphs, sentences, and lists for design mockups.

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Date & Time

Event Countdown Timer

Create live animated countdown timers to important dates, birthdays, and events.

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Documents & PDF

Excel to CSV Converter

Convert Excel XLSX spreadsheets to CSV format with custom delimiters and encodings.

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Documents & PDF

Excel to PDF

Convert XLS and XLSX spreadsheets to printable PDF files directly in your browser.

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Images, Video & Audio

EXIF & Image Metadata Viewer

Inspect camera hardware, lens details, aperture, ISO, shutter speed, timestamp, and GPS coordinates from your photos without uploading.

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Documents & PDF

Extract Text from PDF

Extract all text content from PDF files for easy copying, editing, or analysis.

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Free Online Games

Falling Sand

Experiment with dynamic physics simulations of falling sand, water, fire, plant life, and flammable oil.

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Free Online Games

Flappy Bird

Tap rhythmically to flap wings and navigate through narrow gaps in green pipes with tight timing.

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Free Online Games

Flow

Connect matching colored dots with continuous pipes across the grid without crossing or overlapping lines.

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Everyday Utilities

Free Grammar & Spell Checker

100% private, client-side grammar, spelling, and style checker powered by WebAssembly. Fix writing mistakes with instant one-click suggestions.

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Free Online Games

Free Kick

Bend curved soccer ball shots around defensive walls and beat the diving goalkeeper into the goal net.

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Free Online Games

Freecell

Solve open-deal solitaire by utilizing four temporary holding cells to organize cards into suit piles.

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Free Online Games

Fruit Catcher

Slide your fruit basket across the bottom of the screen to catch falling orchard fruits and build combos.

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Everyday Utilities

Fuel Economy & Gas Mileage Calculator

Convert L/100 km, km/L, U.S. MPG, and Imperial MPG, compute gas mileage from odometer readings, and estimate trip fuel costs.

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Date & Time

Full-Screen World Clock

Real-time full-screen digital and analog world clock for international cities and time zones.

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Free Online Games

Futoshiki

Solve Japanese logic grids by placing numbers that respect greater-than and less-than inequality signs.

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Images, Video & Audio

GIF Maker & Video to GIF

Convert video clips or images into animated GIF files fast and free in your browser.

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Free Online Games

Go 9x9

Play the ancient game of territory control on a fast-paced, beginner-friendly 9x9 Go grid.

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Free Online Games

Gomoku

Compete on an open 15x15 Go grid to be the first player to form an unbroken line of five stones.

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Free Online Games

Hashi

Build single and double bridges between numbered islands to connect all nodes into a single network.

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Images, Video & Audio

HEIC to JPG

Convert HEIC and HEIF photos to compatible JPG images in your browser.

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Free Online Games

Hex Minesweeper

Sweep a hexagonal grid of danger tiles using numeric proximity clues across six neighboring cells.

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Images, Video & Audio

Image Color Picker & Palette Extractor

Pick exact pixel colors from any image using an interactive loupe, and automatically extract dominant color palettes with instant HEX, RGB, HSL, and CSS export.

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Images, Video & Audio

Image Metadata Remover

Remove EXIF, GPS, camera, and other metadata from images.

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Images, Video & Audio

Image Splitter & Instagram Grid Maker

Slice photos into 3×3 profile grids or swipeable 3×1 panorama carousels. Download numbered ZIP files in exact Instagram posting sequence.

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Images, Video & Audio

Image to SVG Vectorizer (True Vector Paths)

Convert monochrome logos, signatures, sketches, and icons from PNG or JPG into true scalable SVG vector <path> coordinates with zero base64 embedding.

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Documents & PDF

Images to PDF

Convert multiple JPG, PNG, and WebP images into a single professional PDF document.

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Finance & Money

Inflation Calculator

Calculate the impact of inflation on purchasing power and future money value.

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Finance & Money

Installment & Instalment Calculator

Calculate Buy Now Pay Later (BNPL) monthly payments and installment schedules.

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Finance & Money

Investment Return Calculator

Calculate total Return on Investment (ROI), compound annualized return (CAGR), and trade profit.

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Free Online Games

Kakuro

Fill cross-sum numerical crossword grids with digits 1 through 9 without repeating numbers in any run.

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Free Online Games

Kenken

Fill grid cages with digits that satisfy target arithmetic sums, differences, products, and quotients.

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Free Online Games

Knight's Tour

Guide the chess knight to step onto every square of the chessboard exactly once in this historic challenge.

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Free Online Games

Laser Box

Rotate mirrors, prisms, and beam splitters to guide laser light onto target optical receptors.

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Images, Video & Audio

LED Banner Online Free - Scrolling Text

Create a free scrolling LED banner sign online. Customize colors, speed, text size, blink effects, and full-screen display.

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Free Online Games

Lights Out

Flip grid switches to toggle adjacent light states and turn off every illuminated cell on the board.

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Everyday Utilities

Lucky Spin Wheel

Spin the lucky wheel to pick random names, make decisions, raffle prizes, or choose winners with realistic physics and sound.

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Health & Fitness

Macro Calculator

Calculate your daily macronutrient breakdown (protein, carbs, fats) and calorie targets for weight loss, maintenance, or muscle gain.

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Free Online Games

Mahjong

Find and match unblocked pairs of traditional Chinese tiles to dismantle multi-layered 3D pyramids.

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Free Online Games

Mancala

Sow and capture glass seeds through wooden pits and storehouses in the world's oldest pit-and-pebble game.

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Free Online Games

Mastermind

Crack the secret four-color peg combination in ten turns or fewer using deductive feedback clues.

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Free Online Games

Math for Kids

Engaging educational mini-games helping young learners practice counting, addition, subtraction, and patterns.

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Free Online Games

Maze

Navigate winding labyrinth corridors, avoid dead ends, and discover the path to the finish line.

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Images, Video & Audio

Meme Generator & Text Overlay

Create viral memes instantly with classic Impact fonts, custom captions, draggable multi-layer text boxes, and zero watermark.

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Free Online Games

Memory Match

Flip pairs of hidden cards to find matching icons and sharpen your short-term visual memory.

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Documents & PDF

Merge Excel Files Online & Split

Combine sheets from multiple Excel files into one workbook, or split a workbook into separate files. Private, client-side, and free.

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Free Online Games

Minesweeper

Flag hidden explosive mines and safely uncover empty squares using numerical proximity clues.

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Everyday Utilities

Multi Tally Counter Clicker

Interactive multi-counter tally clicker board. Count event attendance, inventory items, fitness repetitions, or votes with responsive clicker buttons, step sizes, goal progress bars, and grand totals.

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Everyday Utilities

Multi-Round Scoresheet Maker

Create interactive multi-column scoring sheets for game nights, pub trivia, tournaments, bowling, and golf. Track rounds, auto-calculate sums, averages, and ranks.

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Free Online Games

Nine Men's Morris

Form alignments of three pieces along board lines to capture enemy counters in this Roman strategy classic.

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Everyday Utilities

Noise Meter

Measure real-time sound decibel levels (dB) and ambient noise using your device microphone.

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Free Online Games

Nonogram

Decode numeric row and column clues to reveal hidden pixel art illustrations in Japanese picross grids.

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Free Online Games

Number Search

Locate hidden multi-digit sequences running horizontally, vertically, and diagonally in a grid of numbers.

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Images, Video & Audio

Online Drawing Tool

Digital canvas for sketching, painting, taking notes, and drawing with brush and shape tools.

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Documents & PDF

Online File Viewer

View documents, images, code, and text files instantly in your browser without extra software.

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Images, Video & Audio

Online Photo Booth

Take vintage photobooth strips and camera photos with retro filters and countdown timers.

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Everyday Utilities

Online Poll Maker

Create instant online polls with real-time server voting. Support single or multiple choice questions, duplicate vote prevention, live animated results, shareable links, and embeddable widgets.

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Images, Video & Audio

Online Teleprompter

Read a scrolling script with adjustable speed, text size, mirroring, and full-screen controls.

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Free Online Games

Othello

Flank and flip your rival's discs on an 8x8 board to claim the majority in classic Reversi.

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Documents & PDF

PDF Editor

Annotate, highlight, add text, draw, and edit PDF documents right in your browser.

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Documents & PDF

PDF to Word Converter

Extract text and convert PDF documents into editable Word files.

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Finance & Money

Percentage Calculator

Calculate percentage change, difference, discounts, and common percentage formulas.

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Free Online Games

Piano Tiles

Tap cascading black piano tiles in time with classical melodies without hitting the wrong note.

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Free Online Games

Pixel Art

Create retro pixel art illustrations with custom palettes, layers, grid lines, and PNG export tools.

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Free Online Games

Pong

The legendary retro table tennis duel—bounce the square ball past your opponent's paddle to score points.

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Documents & PDF

PowerPoint to PDF

Convert PowerPoint PPTX and PPT presentations to PDF documents directly in your browser.

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Health & Fitness

Pregnancy Due Date Calculator

Estimate your baby delivery due date, current gestational age, trimesters, and key developmental milestones from LMP, conception, or IVF.

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Documents & PDF

Protect or Unlock PDF

Add password encryption to secure your PDF or unlock password-protected documents.

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Images, Video & Audio

QR Code Generator and Scanner

Generate custom QR codes for URLs, text, Wi-Fi, and scan existing QR codes from files or camera.

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Free Online Games

Quoridor

Navigate your pawn across the board while tactically placing wooden fences to block your rival.

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Free Online Games

Rail Loop

Rotate curved and straight train track tiles to form seamless continuous railway circuits.

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Everyday Utilities

Random Team & Group Generator

Automatically divide any list of names into fair, balanced teams or groups. Customize team names, assign captains, and export results instantly.

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Everyday Utilities

Randomizer and Name Picker

Pick random names, roll dice, flip coins, and generate random lists or numbers.

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Everyday Utilities

Remove Duplicate Lines

Remove repeated lines while preserving their first occurrence.

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Documents & PDF

Rotate PDF

Rotate every page or only selected PDF pages.

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Health & Fitness

Running Pace Calculator

Calculate running pace, finish time, and distance for 5k, 10k, half marathon, and marathon.

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Finance & Money

Sales Tax & VAT Calculator

Calculate sales tax or VAT, net before-tax price, and final tax-inclusive total.

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Everyday Utilities

Secure Message Encryption

Encrypt and decrypt sensitive text messages with AES-GCM encryption and custom passphrases.

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Documents & PDF

Sign PDF

Sign PDF documents online with a drawn, typed, or uploaded signature image.

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Free Online Games

Simon Says

Memorize and reproduce increasingly long sequences of flashing colored buttons and musical tones.

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Free Online Games

Sliding Puzzle

Slide numbered tiles into sequential order using a single empty space in the classic 15-puzzle.

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Free Online Games

Slitherlink

Draw a single continuous closed loop around numbers indicating how many surrounding sides are visited.

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Free Online Games

Snake

Slither around the screen to collect food, grow your tail longer, and avoid running into walls or yourself.

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Images, Video & Audio

Social Media Image Resizer

Resize images for YouTube, Instagram, Facebook, Twitter, and LinkedIn with exact aspect ratio presets.

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Free Online Games

Solitaire

Sort a 52-card deck into four foundation suits from Ace to King in classic Klondike Solitaire.

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Everyday Utilities

Sort Lines

Sort lines naturally, alphabetically, or by length.

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Free Online Games

Sos

Place S and O letters into grid squares to form the word S-O-S and outscore your opponent.

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Free Online Games

Sound Memory

Listen to melodic tonal sequences and play back the exact musical pattern on colorful sound pads.

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Free Online Games

Speed Math

Test your mental math agility by solving rapid arithmetic equations before the countdown clock runs out.

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Free Online Games

Spider Solitaire

Build descending columns of cards in suit from King down to Ace across eight tableau piles.

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Free Online Games

Stack Tower

Time your block drops with precision to stack a towering skyscraper without shaving off excess width.

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Free Online Games

Star Battle

Place stars into partitioned grid zones so that each row, column, and island contains exactly two stars.

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Free Online Games

Sudoku

Fill a 9x9 grid with numbers 1 to 9 so every row, column, and 3x3 box contains all digits without repetition.

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Free Online Games

Suika

Drop and collide matching fruits to merge them into larger fruits until you form the giant watermelon.

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Images, Video & Audio

SVG to PNG

Convert SVG graphics to transparent, high-resolution PNG images.

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Free Online Games

Tangram

Arrange seven traditional geometric polygons to fit silhouettes without overlapping any puzzle piece.

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Free Online Games

Tesla Roadster 3D

Accelerate the all-electric supercar through winding city streets and high-speed drag racing tracks.

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Free Online Games

Tetris

Rotate and drop falling geometric blocks into complete horizontal lines to prevent the matrix from topping out.

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Free Online Games

Threes

Slide number cards to combine ones and twos into threes, then merge matching multiples for high scores.

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Everyday Utilities

Tier List Maker

Create custom tier lists with local image upload. Drag and drop images into S, A, B, C, D tiers, customize tier colors and labels, and download high-resolution tier list images directly in your browser with zero server upload.

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Finance & Money

Tip Calculator & Bill Splitter

Calculate tip amounts and split restaurant bills evenly among people.

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Everyday Utilities

Tournament Bracket Maker

Create interactive single elimination tournament brackets for 4, 8, or 16 teams. Advance match winners with one click, enter match scores, shuffle seeds, crown champions with confetti, and print brackets.

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Free Online Games

Tower of Hanoi

Transfer the stack of ascending disks to another peg one by one without placing a larger disk on a smaller one.

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Free Online Games

Traffic Racer

Weave between high-speed highway cars, dodge lane blockers, and race down the asphalt highway.

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Free Online Games

Untangle

Move network nodes around the plane to untangle crisscrossing lines until zero edges intersect.

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Everyday Utilities

URL Encode & Decode Online

Encode or decode URL components and query strings with percent encoding.

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Health & Fitness

US Navy Body Fat Calculator

Estimate body fat percentage and lean body mass using the official U.S. Navy circumference method. More accurate than BMI for assessing body composition.

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Images, Video & Audio

Video to Audio Converter

Extract high-quality MP3, WAV, and AAC audio tracks from MP4, WebM, and MOV videos.

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Images, Video & Audio

Video Trimmer

Cut, trim, and clip MP4 and WebM videos with precision start and end timestamps.

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Free Online Games

Virtual Rage Room

Smash computers, televisions, plates, and vases in a satisfying, stress-relieving digital sandbox.

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Health & Fitness

Water Intake Calculator

Estimate daily water intake from your body weight and exercise time.

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Free Online Games

Water Jug Puzzle

Pour water back and forth between different capacity jugs to measure out exact target liquid amounts.

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Free Online Games

Water Ripple

Touch and drag across virtual water to generate fluid wave dynamics, reflections, and ripples.

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Images, Video & Audio

Watermark Images and Videos

Add custom text or logo image watermarks to photos and videos with adjustable transparency.

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Free Online Games

Whack-a-Mole

Test your reflexes and whack sneaky moles popping out of underground holes before they disappear.

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Everyday Utilities

Word and Character Counter

Count words, characters with/without spaces, lines, and paragraphs in real time.

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Free Online Games

Wordie

Guess the secret five-letter mystery word within six guesses with colored tile feedback after each try.

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Free Online Games

World Memory Quest: Flags, Capitals & Greetings

Flip cards to match world flags, country names, capital cities, and native greetings across 35+ nations.

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Free Online Games

Zen Garden

Rake smooth sand ripples and arrange natural stones in a tranquil Japanese meditative garden.

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Privacy & Engineering Standards

Engineered for Privacy & Data Transparency

UsefulGo utilities prioritize local browser execution. Most tools run 100% client-side, while live collaboration tools use ephemeral, auto-expiring temporary storage.

Transparent Data Lifecycle

Calculators and converters never leave your device. Live tools (Polls, Leaderboards) use auto-expiring Redis storage with a clear 5-day lifespan.

Instant Computation

High-performance client processing using WebAssembly, Web Workers, and modern APIs.

100% Free Forever

No premium tier, no paywalled features, and no mandatory sign-up screens.