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Free Online Tools Directory

Browse 100+ free browser-based tools. Enable JavaScript for instant search, category filters and the interactive experience.

Developer Tools

JSONfig — Format, validate, and beautify JSON data online for free. Pretty print, minify, and fix JSON errors instantly. No login or install
TS Hut — Convert Unix timestamps to human-readable dates and vice versa. Free online epoch time converter with no sign up. Supports multipl
UUID Hut — Generate random UUIDs online for free. Create UUID v1, v4, bulk UUID generation, and GUID. No login required, instant copy to clip
Regex Hut — Test and debug regular expressions online for free. Real-time matching, syntax highlighting, and cheat sheet. No sign up or instal
Enc Hut — Encode and decode Base64, URL, HTML entities, and generate MD5/SHA hashes online for free. No login required, instant results in y
Fmt Hut — Convert between JSON, YAML, XML, CSV, and TOML data formats online for free. Format and validate data instantly. No sign up or log
Cron Hut — Parse and generate cron expressions online for free. Visualize cron schedules with human-readable descriptions. No sign up or inst
Web Hut — Extract links, take web screenshots, and view page meta data for free. Analyze any webpage instantly. No login or installation req
Random Number — Free random number generator with true randomness. Roll dice, pick lottery numbers, spin the wheel, and generate bulk random numbe
Jwt Decoder — Free online JWT decoder. Paste a JSON Web Token to instantly decode header, payload, and signature. Check expiration status and cl
Api Tester — Free online API testing tool. Send GET, POST, PUT, DELETE, PATCH requests with custom headers and body. View response status, head
Code Formatter — Free online code formatter and minifier. Format and beautify HTML, CSS, JavaScript, and SQL code instantly. Supports indentation,
Ip Lookup — Free online IP address lookup tool. Find your current IP address, geolocation, ISP, timezone, and more. Query any IP address for d
Diff Checker — Free online text and code diff tool. Compare two texts side by side with highlighted additions, deletions, and changes. Line-by-li
Http Status Codes — HTTP状态码完整参考手册，包含1xx-5xx所有常用状态码的含义、详细描述和常见原因分析。Complete HTTP status code reference.
Css Tools — Free online CSS tools: Flexbox generator, Grid layout generator, and Animation generator. Visually create CSS layouts and copy the
Lorem Ipsum — Free Lorem Ipsum generator. Generate placeholder text in Latin, Chinese, or English. Customize paragraphs, word count, and HTML ou
Fake Data — Free fake data generator. Generate realistic fake names, emails, phone numbers, addresses, and more. Export as JSON, CSV, or table
Tech Stack Detector — Detect what technologies a website uses. Identify CMS, JavaScript frameworks, CSS libraries, analytics tools, and more. Free onlin
Keyboard Shortcuts — Quick reference for keyboard shortcuts across Windows, macOS, VS Code, Chrome, Photoshop, and Excel. Search and browse categorized
Website Status — Free website reachability test. Check if a website is reachable from your browser, measure response time, and batch test multiple
Sql Formatter — Free online SQL formatter and beautifier. Pretty print SQL with proper indentation, uppercase keywords, syntax highlighting. Minif

Image & Design

Img Hut — Free online image tools: resize, compress, crop, convert between PNG, JPG, WebP and more. Works in your browser with no login or i
ClipDen — Free online video and audio tools. Convert formats, trim clips, extract audio from video. All processing in your browser, no sign
Color Hut — Pick colors, generate palettes, and convert between HEX, RGB, and HSL for free. Extract colors from images. No sign up or installa
Voice Tools — Free online voice tools. Convert speech to text with real-time recognition, or text to speech with multiple voices.
Font Preview — Preview and compare Google Fonts with custom text. Find perfect font pairings and copy CSS code.
Meme Generator — Free online meme generator. Upload images or use built-in backgrounds, add custom text with stroke effects, and download memes as
Placeholder Image — Free placeholder image generator. Create custom placeholder images with any size, color, and text. Download as PNG or SVG instantl
Chart Maker — Free online chart generator. Create beautiful bar charts, pie charts, line charts, and horizontal bar charts from your data. Downl
Social Image Sizes — Complete social media image size guide for Facebook, Instagram, Twitter/X, LinkedIn, YouTube, TikTok, Pinterest. Recommended dimen

Finance & Calculators

Mort Hut — Calculate monthly mortgage payments, total interest, and view amortization schedules for free. No sign up needed. Compare loan sce
FX Hut — Convert currencies with live exchange rates for free. Supports 150+ currencies with real-time data. No login required, instant con
Rate Hut — Calculate compound interest, APY, and savings growth for free online. Compare interest rates and see projected earnings. No sign u
TaxPod — Calculate your after-tax take home pay for free. Estimate federal and state tax deductions instantly. No login required, works in
Retire Hut — Plan your retirement savings with this free online calculator. Estimate how much you need to save and when you can retire. No sign
Stock Hut — Calculate stock investment returns, profit, and percentage gains for free. Factor in dividends and splits. No sign up, instant res
Fund Hut — Calculate dollar-cost averaging and lump sum investment returns for free. Compare strategies and see projected growth. No login or
Construction Calculators — Free construction calculators. Calculate concrete, bricks, paint, flooring, and roofing quantities with cost estimates.
Bin Lookup — Free BIN lookup tool. Enter the first 6-8 digits of a card to identify the issuing bank, card network, and country.
Exchange Rate History — 查看主要货币汇率参考值和模拟走势图，支持USD/EUR/GBP/JPY/CNY等货币对。View approximate exchange rates and simulated trend charts for major currency pairs.
Loan Comparison — 对比两个贷款方案：月供、总利息、总还款额、有效利率一目了然。Compare two loans side by side: monthly payment, total interest, total cost, effective rate.

Convert & Time

Age Hut — Calculate your exact age in years, months, and days for free. Find days until next birthday and age differences. No sign up or log
Unit Hut — Convert between units of length, weight, temperature, volume, and more for free. Instant conversion with no login or software inst
Time Hut — Convert times between time zones and view world clocks for free. Schedule across time zones with no sign up. Supports all major ci
Countdown Timer — Free online countdown timer and stopwatch. Run multiple timers, fullscreen mode for presentations, browser notifications, and Pomo
Base Converter — 在线进制转换工具，支持二进制、八进制、十进制、十六进制互转，大数支持，位表示可视化。Free online number base converter with binary, octal, decimal, hex conversions.
Everyday Calculators — 实用日常计算器合集：小费计算、折扣计算、日期计算、时薪换算、通胀计算。Free daily calculators: tip, discount, date, hourly wage, inflation.
Scientific Calculator — Free online scientific calculator with trigonometric, logarithmic, and exponential functions. Supports keyboard input, calculation
Probability Calculator — Free probability calculator with permutation, combination, dice probability, coin flip binomial, and lottery odds calculations. In
Matrix Calculator — Free online matrix calculator. Perform addition, subtraction, multiplication, transpose, determinant, and inverse operations on 2x
Timezone Map — View current time in 20+ major cities worldwide. Interactive timezone strip, city search, custom watchlist, and real-time clock up

Text & Writing

MD Hut — Edit and preview Markdown in real-time for free. Convert Markdown to HTML, export to PDF. No login needed, works entirely in your
Text Hut — Count words, convert text case, compare text differences, and more for free. No login or installation required. All text tools in
Pinyin Hut — Convert Chinese characters to Pinyin with tone marks for free. Supports simplified and traditional Chinese. No sign up or installa
Ascii Art — 将文字转换为大型ASCII艺术字体，支持多种字体风格和填充字符。Convert text to large ASCII art with multiple font styles and fill characters.
Morse Code — Free Morse code translator. Convert text to Morse code and vice versa. Listen to Morse audio with adjustable speed. Complete refer

AI · SEO · Marketing

Prompt Hut — Generate effective AI prompts for ChatGPT, Claude, and Midjourney for free. Browse templates and optimize prompts. No login or ins
Write Hut — AI-powered writing tools for emails, blog posts, and social media content. Generate and improve text for free. No sign up or insta
SEO Hut — Analyze SEO titles, meta descriptions, and keywords for free. Check character counts and preview search results. No login or insta
Og Preview — Free Open Graph preview tool. Generate and preview OG meta tags for Twitter, Facebook, LinkedIn, and WhatsApp. Visualize how your
Utm Builder — Free UTM link builder. Generate campaign tracking URLs with UTM parameters for Google Analytics. Presets for Google Ads, Facebook,

Security & Privacy

Pass Hut — Generate strong, secure random passwords online for free. Customize length, symbols, and complexity. No sign up needed, all genera
Browser Fingerprint — Free browser fingerprint detector. See what information your browser reveals: User Agent, WebGL, Canvas fingerprint, hardware info
Text Encryption — Free online text encryption and decryption tool. Supports AES-256-GCM, Base64, ROT13, and Caesar cipher. All processing happens in

Documents

PDF Hut — Free online PDF tools to merge, split, compress, and convert PDF files instantly in your browser. No login, no sign up, no softwar
Doc Hut — Generate professional resumes, cover letters, and business documents for free. Customizable templates with no sign up or installat

Global Data

LatLng Hut — Find latitude and longitude coordinates for any location for free. Reverse geocode addresses and view on map. No login or installa
Country Data — Compare countries by GDP, population, HDI, and more. Interactive charts, rankings, and historical trends for 200+ countries.
University Rankings — Compare world university rankings. Filter by country, tuition, and international student friendliness. Find your ideal university.
World Population — Explore world population data. View population rankings, growth rates, age structure, and urbanization trends for every country.
City Rankings — Compare cities worldwide by livability, safety, cost of living, air quality, and more. Find the best city to live, work, or study.
Country Codes — Look up country codes (ISO 3166), international phone dialing codes, currency codes, and time zones for every country.
Tech Market Cap — Track the world's most valuable tech companies by market capitalization. Compare and explore rankings.
Happiness Index — Explore the World Happiness Report rankings. Compare countries by happiness score, GDP, social support, health, freedom, and gener
Internet Users — Explore internet usage data worldwide. View internet users by country, penetration rates, and growth trends.
Programming Languages — Compare programming language popularity from TIOBE, Stack Overflow, and GitHub. See rankings, trends, and job market demand.
Carbon Emissions — Explore global CO2 emissions data. Compare countries by total emissions, per capita, and emission trends.
Military Power — Compare military strength of countries worldwide. View rankings by personnel, defense budget, equipment, and power index.
Ev Sales — Track global electric vehicle sales by country and brand. View market share, growth trends, and EV adoption rates.
Food Production — Explore global food production data. Compare countries by crop output including rice, wheat, corn, and soybeans.
Travel Destinations — Discover the world's most visited countries and cities. Compare tourism revenue, international arrivals, and travel trends.
China Hospitals — Find hospitals in China with international departments. Search by city, specialty, and tier. Guide for foreigners seeking medical
Periodic Table — Interactive periodic table with all 118 elements. Click any element for detailed info: atomic mass, electron configuration, meltin

Life & Learning

On This Day — Discover what happened on this day in history. Browse historical events by date and category.
Health Calculators — Free health calculators. Calculate BMI, body fat, BMR, TDEE, due date, and ideal weight. Supports metric and imperial units.
Shipping Tools — Free logistics tool. Automatically identify shipping carriers from tracking numbers and compare global carriers.
Random Wikipedia — Explore random Wikipedia articles. Discover interesting facts with every click.
Daily Word — Learn a new word every day with pronunciation, examples, and part of speech. Build your vocabulary with daily practice.
Cost Of Living — Compare cost of living between cities. Rent, food, transport, and salary equivalent calculator.

Utilities

QR Hut — Generate and scan QR codes free online. Create QR codes for URLs, text, WiFi, vCard. No sign up needed, works instantly in your br
Speed Hut — Test your internet download and upload speed for free. Measure latency and jitter. No sign up required, instant results in your br
Screen Resolution — Check your screen resolution, device pixel ratio, viewport size, color depth, and touch support instantly.
Led Banner — Free online LED scrolling banner tool. Create eye-catching scrolling text displays for events, sports, concerts, and presentations
Random Picker — Free online random draw and grouping tool. Randomly pick names from a list with animation, or divide people into teams/groups fair
Emoji Search — Search, browse and copy emojis instantly. Organized by categories with English and Chinese search. Click any emoji to copy it to y
Vcard Qr — Free QR code business card generator. Create vCard QR codes with name, title, company, phone, email, and address. Download as PNG
Typing Test — Free online typing speed test. Measure your WPM, accuracy, and typing skills with English and Chinese paragraphs. 30s, 60s, 120s t