Your Go-To Free Online Toolkit
Generate QR codes, format JSON, convert Markdown, compress images, calculate percentages, and more — 184 free tools that work instantly in your browser.
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Trusted by developers, designers, and creators worldwide
179+ Free Tools for Every Task
From mind maps to QR codes, JSON formatting to image compression - all tools are free, work in your browser, and require no sign-up.
Mind Map Tools
Create, edit, export, and present mind maps with a powerful all-in-one editor.
Mind Map Editor
The ultimate online mind map creator. Build, visualize, and organize ideas with a fast, all-in-one visual workspace.
Markdown to Mind Map
Convert Markdown headings and lists into an interactive visual map.
PNG Export
Export mind maps as high-quality PNG images for slides, docs, and collaboration.
SVG Export
Export scalable SVG files for crisp visuals at any size.
Excel Export
Turn visual map hierarchy into tabular structure for planning and reporting.
Presentation Mode
Present mind maps as focused slides for workshops, classes, and stakeholder reviews.
PDF Tools
Merge, split, compress, and convert PDF files. Edit and organize PDF documents entirely in your browser.
PDF Merger
Combine multiple PDF files into one document. Reorder pages, remove unwanted pages, and merge them seamlessly.
PDF Splitter
Split PDF files into individual pages or extract specific page ranges. Free, fast, and private.
Image to PDF Converter
Convert JPG, PNG, and WebP images to PDF documents. Arrange, reorder, and download as a single PDF.
PDF to Image Converter
Convert PDF pages to high-quality PNG or JPG images. Extract individual pages or entire documents.
PDF Compressor
Compress PDF files to reduce file size. Remove metadata, trim empty pages, and optimize for sharing.
PDF Page Organizer
Reorder, rotate, delete, and duplicate PDF pages visually. Drag and drop to rearrange your document.
PDF Metadata Editor
View and edit PDF metadata including title, author, subject, keywords, and more. Clean metadata instantly.
PDF Text Extractor
Extract text from PDF files. Copy text from any PDF page or download all text as a .txt file.
PDF Password Protect
Add password protection to your PDF files. Set user and owner passwords to control access and permissions.
PDF Unlock / Remove Password
Remove password protection from PDF files. Unlock encrypted PDFs by providing the correct password.
TXT to PDF Converter
Convert plain text files to PDF documents. Choose font size and page format (A4/Letter).
Markdown to PDF Converter
Convert Markdown documents into beautifully formatted PDF files with live preview.
HTML to PDF Converter
Convert HTML code into a styled PDF document. Live preview shows exactly what you will get.
Conversion Tools
Convert between formats: CSV, JSON, Markdown, HTML, Base64, and images.
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV instantly. Drag-and-drop file upload with header detection.
Outline ↔ Tree Converter
Convert indented text outlines to JSON tree structures and back. Perfect for structured data.
Image to Base64 Converter
Convert images to Base64 data URIs instantly. Drag-and-drop PNG, JPG, GIF, SVG and copy as data URI or raw Base64.
Image Compressor
Compress images online with adjustable quality. Reduce file size without losing visible quality.
Image Resizer
Resize images to custom dimensions. Set width, height, or scale by percentage. High-quality Canvas output.
Image Cropper
Crop images to custom dimensions. Drag to select, choose aspect ratio, and download the result.
Image Color Picker
Pick colors from any image. Hover to preview, click to capture HEX and RGB values.
HTML to Markdown Converter
Convert HTML into clean Markdown for docs, blogs, CMS migrations, and note-taking.
Image to ICO Converter
Convert any image to ICO format for website favicons. Generates multiple sizes (16×16 up to 128×128) in a single .ico file.
Image Format Converter
Convert images between PNG, JPG, WebP, AVIF, BMP, and more. Rasterize SVGs, use quality presets, toggle lossless WebP, and compare with an interactive slider.
Developer Tools
Fast, free utilities for encoding, formatting, and converting data.
QR Code Generator
Create custom QR codes for URLs, WiFi, text, and more. Customize colors, size, and download as PNG or SVG.
Base64 & URL Encoder
Encode and decode Base64 and URL strings with full Unicode support. Fast, local, and free.
JSON Formatter & Validator
Format, validate, minify, and beautify JSON. Get instant validation feedback and file statistics.
Hash Generator (MD5 / SHA)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. All locally in your browser.
Regex Tester & Debugger
Test regular expressions with live match highlighting, capture group extraction, and flag support.
HTML Entity Encoder / Decoder
Encode text to HTML entities or decode HTML entities back to readable text. Prevent XSS and debug HTML.
UUID Generator
Generate RFC 4122 v4 UUIDs instantly. Create one or many, with or without hyphens, upper or lowercase.
Password Generator
Generate strong, secure random passwords. Customize length, character sets, and see strength in real-time.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
JWT Decoder
Decode JSON Web Tokens to inspect header and payload. View claims, expiration, and issuer info instantly.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal instantly. Supports large numbers via BigInt.
XML Formatter & Validator
Format, beautify, minify, and validate XML. Get instant error feedback with line numbers and statistics.
HTML Minifier
Minify HTML by removing comments, whitespace, and redundant tags. Reduce file size instantly.
CSS Minifier
Minify CSS by removing comments, whitespace, and unnecessary characters. Optimize stylesheets.
URL Parser
Parse URLs into components: protocol, host, port, path, query params, and fragment. Copy any part.
URL Encoder / Decoder
Encode unsafe URL characters or decode URL-encoded strings for debugging, redirects, and APIs.
HTML Table Generator
Generate clean, styled HTML tables with custom rows, columns, header colors, and alternating row backgrounds.
Password Strength Checker
Check password strength with real-time analysis of length, characters, uniqueness, patterns, and estimated crack time.
Subnet Calculator
Calculate network address, broadcast address, host range, subnet mask, and more from an IP and CIDR.
Keyboard Tester
Test every key on your keyboard with a visual layout. See real-time feedback as you press each key.
Text & Content Tools
Analyze, convert, and transform text and documents instantly.
Word Counter & Text Analyzer
Count words, characters, sentences, and paragraphs. Analyze keyword density and reading time.
Markdown to HTML Converter
Convert Markdown to clean, styled HTML with live preview. Export as a standalone HTML file.
Markdown Toolbox
Beautify, minify, convert to plain text, and extract links, images, and headings from Markdown.
Lorem Ipsum Generator
Generate placeholder text for designs and mockups. Paragraphs, sentences, or words — Latin or English.
Text Case & Slug Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, URL slugs, and more.
Text Diff Checker
Compare two text blocks and highlight line-by-line differences. Unified and split view with statistics.
URL Slug Generator
Generate SEO-friendly URL slugs from any text. Customize separator, case, max length, and stop word removal.
Remove Duplicate Lines
Remove, find, or keep unique lines from any text. Case-sensitive option and trim mode included.
Text Line Sorter
Sort text lines alphabetically, numerically, or by length. Multiple sort modes with real-time output.
Whitespace Remover
Remove extra spaces, trim lines, collapse whitespace, and clean up text formatting instantly.
Text Reverser
Reverse text by characters, words, lines, or reverse each line. Quick and free online text reversal tool.
Text to Binary Converter
Convert text to binary (0s and 1s) and back. Supports ASCII, UTF-8, and Unicode characters.
Morse Code Translator
Translate text to Morse code and back. Supports letters, numbers, and punctuation.
Fancy Text Generator
Generate fancy Unicode text styles: bold, italic, cursive, gothic, monospace, circled, and more.
Text Repeater
Repeat text multiple times with custom separators. Perfect for social media and testing.
Character Counter
Count characters, words, lines, paragraphs, and compare text against SEO and social media limits.
Reading Time Calculator
Estimate reading time, speaking time, and page length from any article, script, or essay.
Keyword Density Checker
Measure keyword density, repeated terms, and top word frequency in your content draft.
Emoji Copy Paste
Browse, search, and copy emojis for social media, messages, and content. Click any emoji to copy it instantly.
Small Text Generator
Convert text into fancy Unicode styles — cursive, bold, italic, superscript, subscript, fraktur, and monospace.
AI Content Detector
Analyze text to assess whether it is AI-generated or human-written using burstiness, perplexity, and repetition analysis.
Text to Speech
Convert text to natural-sounding speech using your browser's built-in speech synthesis. Adjust voice, speed, and pitch.
YouTube Tag Generator
Generate optimized YouTube video tags from your keywords. Improve search discovery with relevant tag combinations.
Hashtag Generator
Generate relevant hashtags for Instagram, TikTok, Twitter, and LinkedIn from any topic or keyword.
Remove Line Breaks
Remove line breaks from text instantly. Replace newlines with spaces, commas, or strip them entirely.
Find and Replace Text
Find and replace text with case-sensitive and regex options. See match preview with live highlighting.
Random Word Generator
Generate random words for writing prompts, naming, games, and creativity. 6 categories, length filters, and copy-to-clipboard.
Username Generator
Generate creative usernames for gaming, social media, and online profiles. 6 styles, customizable options.
Comma Separator
Join, split, clean, or deduplicate text by comma or custom delimiter. Handy for CSV data and lists.
Random Item Picker
Pick random items from a list. Use for giveaways, contests, raffles, or decision making.
ASCII Art Generator
Create text-based ASCII art with multiple font styles. Type any text and convert it into block letters.
Zalgo Text Generator
Create glitched, corrupted Zalgo text for memes, horror effects, and artistic text styling.
Shuffle Letters / Words
Randomly shuffle letters in text, words in a sentence, or lines in a paragraph. Fun for games and creative writing.
Extract Email Addresses
Extract all email addresses from any text. Automatically detects and deduplicates email addresses from documents, web pages, or CSVs.
Email Spam Word Checker
Check your email content for spam trigger words. Improve deliverability by identifying and avoiding spam filter keywords.
NATO Phonetic Alphabet Converter
Convert text to NATO phonetic alphabet (Alpha, Bravo, Charlie...). Listen to pronunciation or copy for clear radio communication.
Caesar Cipher
Encrypt or decrypt text using the Caesar cipher with custom shift, ROT13, ROT47, and brute-force decryption showing all 25 possible shifts at once.
Vigenère Cipher
Encrypt or decrypt text using the Vigenère cipher with a keyword. Supports autokey mode, key visualization, and index of coincidence analysis.
Atbash & Rail Fence Cipher
Two classical ciphers: Atbash reverses the alphabet (A↔Z, B↔Y), and Rail Fence rearranges text across diagonal rails with full pattern visualization.
Math & Calculators
Calculate percentages, ages, random numbers, and convert between number bases.
LaTeX Math Equation Editor
Write LaTeX math equations with live preview. Insert symbols, fractions, integrals, matrices. Export as SVG.
Percentage Calculator
Calculate percentages instantly. Find X% of Y, what percent X is of Y, or percentage increase/decrease.
Random Number Generator
Generate secure random numbers within a range. Multiple numbers, unique mode, sorting, and statistics.
Age Calculator
Calculate exact age from a birthdate. Shows years, months, days, total days, hours, and next birthday.
Loan Calculator (EMI)
Calculate monthly loan payments, total interest, and total cost. See amortization breakdown.
BMI Calculator
Calculate Body Mass Index (BMI). Enter height and weight to see your BMI category and healthy range.
Tip Calculator
Calculate tip and split the bill. Set tip percentage and number of people for instant results.
Discount Calculator
Calculate the final price after a discount. Enter original price and discount percentage for savings.
Compound Interest Calculator
Calculate compound interest with custom compounding frequency. See growth over time.
Sales Tax Calculator
Calculate sales tax on purchases. Add tax to a price or reverse-calculate tax from a total.
Mortgage Calculator
Calculate monthly mortgage payments including principal, interest, property tax, and insurance.
Simple Interest Calculator
Calculate simple interest on a principal. Enter principal, rate, and time for instant results.
Date Difference Calculator
Calculate the difference between two dates. Shows days, weeks, months, and years.
GPA Calculator
Calculate your Grade Point Average (GPA) on a 4.0 scale. Add courses with credits and grades.
Salary Calculator
Convert between hourly, daily, weekly, monthly, and annual salary. See your full earnings breakdown.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step simplification for proper and improper results.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, mode, quartiles, and range for any data set.
Ratio Calculator
Simplify ratios, scale them to target values, and calculate aspect ratio, percentage splits, and decimal equivalents.
Permutation & Combination Calculator
Calculate permutations (nPr), combinations (nCr), and factorials for probability, statistics, and combinatorics.
Aspect Ratio Calculator
Calculate aspect ratios, simplify dimensions, and scale images or videos proportionally for any screen or project.
Average Calculator (Mean, Median, Mode)
Calculate mean, median, mode, and range for any set of numbers. Enter comma, space, or line-separated values.
Hours Calculator (Time Card)
Calculate work hours, overtime pay, and total compensation. Add clock-in/out entries for multiple days with hourly rate support.
Calorie Calculator (BMR & TDEE)
Calculate daily calorie needs, BMR, TDEE, and macronutrient split for weight loss, maintenance, or muscle gain.
Pomodoro Timer
Boost productivity with the Pomodoro technique. Work intervals, short/long breaks, desktop notifications, and weekly stats.
Margin Calculator
Calculate profit margin, markup percentage, and break-even point. Enter revenue and cost to see your margins instantly.
Salary to Hourly Converter
Convert between hourly, daily, weekly, monthly, and yearly salary. Based on standard 8-hour workdays, 5-day workweeks.
Percentage Change Calculator
Calculate percentage increase or decrease between two values with difference, change, and ratio.
World Clock
View current time across multiple timezones. Compare local times in 15+ major cities worldwide.
Probability Calculator
Calculate probabilities, odds, combinations, and permutations. For single or multiple events.
TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and BMR. Find calories for maintenance, loss, or gain.
Bra Size Calculator
Calculate your bra size from underbust and bust measurements. US, UK, EU, FR, and AU sizes.
Ring Size Calculator
Convert ring sizes between US, UK, EU, and JP. Measure by circumference or diameter.
Online Ruler
Measure real-world objects using your screen. Calibrate with a credit card for accurate cm, inches, and pixel measurements.
PayPal Fee Calculator
Calculate PayPal fees for domestic and international transactions. See what you receive or what to charge.
GST / VAT Calculator
Add or remove GST/VAT from any amount. Supports 20+ countries with custom rate option.
Sort Numbers
Sort a list of numbers in ascending or descending order with optional duplicate removal and statistics.
Number Sequence Generator
Generate arithmetic, geometric, Fibonacci, prime, square, cube, triangular, or random number sequences.
Decimal to Fraction Converter
Convert any decimal number to its fraction form. Supports precision up to 1/1000 with simplified fractions.
Final Grade Calculator
Calculate the grade you need on your final exam to reach your target. Supports weighted assignments and shows best/worst-case scenarios.
Flashcards
Create and study digital flashcards. Add cards, flip to check answers, shuffle the deck, and track which cards you have mastered.
Business Day Counter
Calculate exact business days between two dates. Excludes weekends and optionally public holidays. Shows work weeks and ratios.
Week Number Calculator
Find the ISO week number, day of year, quarter, days remaining, and more for any date. Shows a monthly calendar.
Time Duration Calculator
Calculate the exact duration between two times. Shows hours, minutes, seconds, and decimal time — perfect for meetings and tasks.
Countdown Timer
Live countdown to any future date or event. Days, hours, minutes, and seconds updating in real-time with presets.
CSS & Design Tools
Generate CSS gradients, box shadows, convert color formats, and create meta tags.
Color Palette Generator
Generate harmonious color schemes from a base color. Complementary, analogous, triadic, monochromatic, and more.
WCAG Color Contrast Checker
Check color contrast ratios against WCAG 2.1 accessibility standards (AA and AAA). Essential for accessible design.
CSS Gradient Generator
Create beautiful CSS linear and radial gradients with live preview. Copy-ready CSS code with presets.
HEX to RGB Color Converter
Convert between HEX, RGB, HSL, and CMYK color formats. Live color picker with instant conversion.
CSS Box Shadow Generator
Generate CSS box-shadow with live preview. Control offset, blur, spread, color, and inset shadows.
CSS Border Radius Generator
Generate CSS border-radius with individual corner control. Create rounded corners or asymmetric shapes.
CSS Grid Generator
Generate CSS grid layouts visually. Set rows, columns, gaps, and alignment with live preview.
CSS Flexbox Generator
Generate CSS Flexbox layouts visually. Tweak direction, wrap, alignment, and gap — and copy the production-ready code.
CSS Text Shadow Generator
Create CSS text-shadow effects with multi-layer shadows. Adjust offset, blur, color, and opacity in real time.
CSS Animation Generator
Generate CSS @keyframes animations including bounce, shake, pulse, spin, fade, slide, flip, and more.
Glitch Art Generator
Generate unique glitch art with randomized patterns, corrupted text, and RGB channel shift effects.
Pixel Art Editor
Create retro pixel art with a grid editor. Choose colors, paint pixels, undo mistakes, and export as PNG.
Passport Photo Maker
Create passport and ID photos online. Upload a photo, adjust the crop, and download in the correct size.
Unit Converters
Convert length, weight, temperature, speed, and area between metric and imperial units.
Number to Words Converter
Convert numbers to English words. Supports trillions, decimals, negatives, and check-writing format.
Length Converter
Convert length between metric and imperial units. Meters, feet, inches, kilometers, miles, and more.
Weight Converter
Convert weight between metric and imperial units. Kilograms, pounds, ounces, stones, and more.
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine. See conversion formulas for each.
Speed Converter
Convert speed units: km/h, mph, m/s, knots, and ft/s. Real-time conversion for any speed.
Area Converter
Convert area units: square meters, square feet, acres, hectares, square miles, and more.
Timezone Converter
Convert times between world timezones. Compare UTC, EST, PST, GMT, CET, IST, JST, and more.
Volume Converter
Convert volume units: liters, gallons, cups, milliliters, pints, quarts, and fluid ounces.
Data Storage Converter
Convert digital storage units: bytes, KB, MB, GB, TB, PB. Binary (1024) based conversion.
Time Converter
Convert time units: seconds, minutes, hours, days, weeks, months, and years.
Pressure Converter
Convert pressure units: Pascal, bar, psi, atm, mmHg, and torr.
Roman Numeral Converter
Convert numbers to Roman numerals and back. Supports values from 1 to 3,999 with instant bidirectional conversion.
Currency Converter
Convert between 30+ currencies with live exchange rates. Auto-updates every 10 minutes. No API key required.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, and CM for men, women, and kids. International sizing with full chart.
Coordinate Converter (GPS)
Convert GPS coordinates between Decimal Degrees, DMS, DDM, and view UTM zone information.
Interactive & Games
Puzzles, brain teasers, interactive experiences, and creative visual experiments.
Dog Age Calculator (Human Years)
Convert dog years to human years using veterinary formulas. Choose small, medium, or large breed for accuracy.
Coin Flip (Heads or Tails)
Flip a virtual coin, answer Yes/No, or decide between two options with custom labels. Track history and stats.
Dice Roller
Roll virtual dice with custom sides. Supports multiple dice, roll history, and statistics.
Sierpinski Triangle Generator
Generate beautiful Sierpinski triangle fractals with customizable recursion depth and gradient colors.
Conway's Game of Life
A cellular automaton simulation. Create life patterns, watch them evolve through generations, and discover emergent behavior.
Maze Generator & Solver
Generate random mazes using DFS or Prim's algorithm, then solve them with BFS pathfinding.
Sudoku Puzzle
Play Sudoku online with three difficulty levels. Get hints, check your solution, and let the solver help when you're stuck.
Tower of Hanoi
Solve the classic Tower of Hanoi puzzle. Move disks between pegs and watch the auto-solver demonstrate the optimal solution.
Sorting Algorithm Visualizer
Watch 8 sorting algorithms in action. Compare Bubble, Quick, Merge, Heap Sort and more with animated bar charts.
Personality Type Test (16 Types)
Discover your 16-type personality profile. Answer 20 quick questions to learn your strengths and weaknesses.
Generators
Generate documents, citations, meta tags, and other structured content instantly.
Meta Tag Generator
Generate SEO meta tags, Open Graph, and Twitter Card tags. Title length and description count feedback.
APA & MLA Citation Generator
Generate APA and MLA citations for websites, books, journal articles, and news sources. Perfect for academic bibliographies.
Privacy Policy Generator
Generate a custom privacy policy for your website or app. Covers GDPR, CCPA, and standard data protection clauses.
Terms & Conditions Generator
Generate terms and conditions for your website, app, or service. Covers liability, intellectual property, and dispute resolution.
Cover Letter Generator
Generate a professional cover letter tailored to any job. Enter your details, choose a tone, and get a ready-to-use letter.
Resignation Letter Generator
Create a professional resignation letter. Choose a tone, select your reason, and download your letter instantly.
Network & IP Tools
Debug, validate, and convert network addresses. Check your IP, find locations, generate MACs, and more.
My IP Address
Find your public IP address, ISP, location, and network info instantly. Shows connection type and coordinates.
IP Location Lookup
Find the geographic location of any IP address. Shows city, region, country, ISP, timezone, and coordinates.
IP Address Validator
Validate and analyze IPv4 and IPv6 addresses. Shows address type, class, binary, hex, and decimal representations.
IPv4 / IPv6 Converter
Convert between IPv4 and IPv6 address formats. Map, expand, compress, and extract embedded addresses.
MAC Address Generator
Generate random MAC addresses for testing. Multiple formats, vendor OUIs, and batch generation up to 50.
Port Number Reference
Browse common TCP/UDP port numbers with protocols, service names, and descriptions. Search by port or keyword.
No sign-up · No download · No data collection · Saves locally in your browser
Tools for Every Role
Whether you're a developer debugging an API, a designer crafting a brand, or a student studying for finals — there's a tool for you.
Developers
Format JSON/XML, decode JWT, validate regex, convert timestamps, hash files, and generate UUIDs — all without leaving the browser.
Designers
Generate color palettes, create CSS gradients, convert hex to RGB, craft box shadows, and compress images — instantly, no design tools needed.
Students
Calculate grades and GPAs, count words and reading time, convert Markdown to HTML, generate citations, and study with digital flashcards.
Marketers
Generate QR codes for campaigns, create meta tags for SEO, format data, compress images for web, and convert between file formats.
Tools That Respect You
Free, fast, and private. Every tool is built with your privacy and convenience in mind.
179+ Free Tools
From QR codes to JSON formatters, image compressors to calculators — a comprehensive toolkit for developers, designers, and creators.
No Sign-up Required
Every tool works instantly, right in your browser. No accounts, no emails, no passwords. Just open and use.
100% Local Processing
All processing happens in your browser. Your files never leave your device. No uploads, no servers, no waiting.
Works Offline
Many tools work even without internet. Once loaded, keep using them wherever you are — on a plane, train, or remote.
No Data Collection
Privacy by design. We do not track, store, or collect any data. Your sensitive information stays yours entirely.
Export & Download
Download results as files, copy to clipboard, or share directly. Results are yours to keep and use anywhere.
Frequently Asked Questions
Do I need to create an account?
No. Every tool works without any account or login. Just open a tool and start using it instantly. No sign-ups, no emails, no passwords.
How many tools are available?
There are 100+ free tools across 11 categories: mind map tools, conversion tools, developer tools, text tools, calculators, design tools, unit converters, generators, network tools, PDF tools, and more. New tools are added regularly.
Is my data safe and private?
Absolutely. All processing happens entirely in your browser. No data is ever uploaded to any server. Your files, text, and results never leave your device.
Can I use the tools offline?
Many tools work offline once the page has loaded. Since all processing is client-side, you can continue using them without an internet connection.