212 free tools · no sign-up
Free online tools that just work
Compress and resize images, merge PDFs, make QR codes, calculate EMIs and more in seconds. Every tool runs in your browser — private, fast and free.
- Files never leave your device
- Instant results
- Free and unlimited
- Works on any device
Most used
Popular tools
Image Compressor
Compress JPG, PNG, WebP and AVIF images online for free. Shrink photos by up to 90% or hit an exact KB target — right in your browser, with no upload.
Word Counter
Free online word counter: count words, characters, sentences and paragraphs as you type, with reading time, keyword density, readability and limits.
Password Generator
Generate strong, random passwords, memorable passphrases and PINs with a cryptographically secure generator. Free, instant and private — nothing is stored.
JSON Formatter & Validator
Format, validate, minify and repair JSON online. Get the exact line and column of every error, a collapsible tree view and sorted keys — private, in-browser.
EMI Calculator
Calculate your loan EMI, total interest and full repayment schedule instantly. See yearly charts, the impact of prepayments and download the schedule.
Merge PDF
Merge PDF files online for free. Combine PDFs in any order, pick exact pages from each and download one file — processed in your browser with no upload.
Browse
Tools by category
Image Tools
Compress, resize, crop and convert photos, combine several into a photo collage for Instagram, Stories or print, turn a photo into a pencil sketch, charcoal drawing or cartoon, draw a symmetric rangoli or mandala and fill it with colour, split one picture into an Instagram profile grid or a seamless panorama carousel, copy the text out of photos and screenshots in English, Hindi and 30 more languages, optimise SVG files or turn them into PNG, JPG or WebP, pick colour codes and palettes from any image, convert photos to grayscale or black and white, make a complete favicon package from a logo, text or emoji, make passport size photos, print a big poster across A4 or Letter sheets, add watermarks, blur faces and private details, and strip hidden location data — right in your browser. Images are processed on your own device — nothing is uploaded, nothing is stored, and there is never a watermark or a sign-up.
- Image Compressor
- Image Resizer
- WebP Converter
- HEIC to JPG Converter
- EXIF Metadata Remover
- Image Blur Tool
Text Tools
Write, speak, listen, compare, count, analyse and transform text: type with your voice in Hindi, English and 20 more languages with spoken punctuation, hear any text read aloud in Hindi, English and other languages with natural voices and word-by-word highlighting, see every difference between two versions of a document or file side by side with the changed words highlighted, keep private notes in a notepad that saves as you type, read a script on camera with a teleprompter that can follow your voice, fix capitalisation, style your name in fancy fonts, copy emoji, kaomoji and symbols, or turn typed notes into handwriting. Paste anything from an essay to a tweet and get results as you type — your text is processed in your browser and never sent to us (voice typing uses your browser’s own speech service).
- Word Counter
- Text to Handwriting
- WhatsApp Chat Analyzer
- Fancy Font Generator
- Case Converter
- Emoji & Kaomoji Picker
PDF Tools
Sign, compare, shrink, split, merge, crop, rotate and rearrange PDFs, add page numbers, redact, flatten, watermark and protect them, turn pages into images, and make PDFs from images or HTML — without sending anything anywhere. Every PDF tool runs locally in your browser, so contracts and statements stay private.
Developer Tools
Everyday utilities for developers, designers and site owners that run instantly in your browser. Format SQL for MySQL, PostgreSQL, SQL Server, Oracle and more, or minify it to one line. Paste API responses, tokens, configs and stylesheets without worrying — the regex tester, JWT debugger, HMAC and webhook signature checker, hex and binary converters, hash generator and cron tool never send data to a server — convert between JSON, YAML and XML without the quoting traps, generate TypeScript interfaces or Zod schemas from an API response, turn Markdown into Notion blocks or send it to a Notion page, and build a commented .htaccess file for redirects, HTTPS, security headers and caching — measure screens and screenshots pixel by pixel with a calibrated screen ruler, preview any page on phone, tablet and desktop screens side by side, and check any domain’s DNS records from public DNS servers worldwide.
- JSON Formatter & Validator
- XML to JSON Converter
- DNS Lookup
- DNS Propagation Checker
- JSON to CSV Converter
- CSV to JSON Converter
CSS Tools
Check that text is readable with a WCAG colour contrast checker that suggests the nearest passing colours and tests a whole palette. Learn and build flexbox and grid layouts by clicking through every property, with item sizes and grid lines shown on the layout. Design modern interface effects by eye and copy code that is ready for production: linear, radial and conic gradients with smooth OKLCH blending and PNG wallpaper export, smooth layered box shadows with Tailwind and Material presets, frosted glass with a live check that text on it stays readable, soft neumorphic buttons and inputs with accessible edges, responsive bento grids that you draw with the mouse, and scroll animations that play as elements come into view — with a fallback for browsers that cannot do them in CSS alone. Each generator writes clean CSS, plus Tailwind classes or React where they help, and runs entirely in your browser.
- CSS Glassmorphism Generator
- CSS Neumorphism Generator
- Bento Grid Generator
- Scroll Animation Generator
- CSS Box Shadow Generator
- CSS Flexbox & Grid Playground
Calculators
Accurate calculators for study, money and everyday life — income tax under the new and old regimes, home and car loan EMIs with prepayments, US mortgages with PMI, auto loans with trade-ins and student loan payoff plans, a full scientific calculator with history, percentages with the working shown, GST with the current 5%, 18% and 40% slabs, SGPA and CGPA with percentage conversion, attendance with the classes you can skip or must attend, loan EMIs, SIP, PPF, fixed and recurring deposit growth with tax, compound interest with any compounding and regular deposits, credit card payoff plans, gross-to-net salary in Luxembourg, a janam kundli maker in Hindi or English, your exact age and exam eligibility, days between dates with working days and holidays, a fair random number generator with a housie draw, rooftop solar sizing with the PM Surya Ghar subsidy and payback, trip and flat expenses split fairly with UPI settle-up links, gratuity by the legal formula with the tax-free part, your EPF balance at retirement with the EPS pension, the units each appliance adds to your electricity bill, the real price of gold and silver jewellery with making charges and GST, tax-free HRA month by month with the 80GG rent deduction, daily calories, BMR and macros with a week-by-week path to your goal weight, the retirement corpus you need with the step-up SIP to reach it, the fuel cost of a trip and whether petrol, CNG or an EV is cheaper to run, today’s Panchang with tithi, Rahu Kaal and Choghadiya for your city, the bricks, cement and sand for a wall, slab or plaster, and BMI — with clear breakdowns of how every result is worked out.
Education Tools
Study in focused sessions with a Pomodoro timer that tracks your daily focus time and streak. Learn maths by seeing it: plot up to six functions on a graphing calculator that marks roots, turning points and crossings, and learn any multiplication table up to ×20 — in English or as a Hindi pahada read aloud — with a times-table chart and a practice quiz that keeps asking the facts you miss. Practise and prepare: test your typing speed in English or Hindi with exam-style passages, print OMR bubble answer sheets for mock tests, maths worksheets with answer keys and graph, dot, isometric or lined paper at true size, plan exam seating so that classmates never sit together, pick students fairly with a spinning wheel, or split the class into random groups. For chemistry, explore an interactive periodic table — properties, trends, states at any temperature, a quiz and a printable copy — balance any equation with a count of every atom on both sides, look up or build the electron configuration of any element or ion, and turn molecules and proteins around in 3D with bond lengths and angles measured. For physics, solve half-life problems with the working shown, date samples with carbon-14, and watch radioactive decay happen atom by atom in a simulator — no sign-up.
- Worksheet Generator
- Random Name Picker
- OMR Sheet Generator
- Typing Speed Test
- Exam Seating Arrangement Planner
- Chemical Equation Balancer
Business Tools
Run the paperwork of a small business without software subscriptions: make GST tax invoices, bills of supply and quotations with the tax worked out, Luxembourg invoices and credit notes in French, German or English with every mention the VAT law asks for (and a Peppol e-invoice), printable ID cards and badges for staff, students and visitors — one or a whole list at once — monthly payslips with PF, ESI and loss of pay calculated for you, and your signature — drawn, typed or cleaned up from a photo — as a transparent PNG or SVG. Check GSTINs, PANs, Aadhaar numbers, IFSC codes and more for typos — one at a time or a whole list from a spreadsheet — and make a year of rent receipts for your HRA claim in one PDF. Every document is a clean PDF made on your own device — nothing is uploaded, and your details are saved only in this browser.
- GST Invoice Generator
- Salary Slip Generator
- Printable ID Card Maker
- Luxembourg Invoice Generator
- Signature Generator
- GSTIN, PAN & Aadhaar Validator
Career Tools
Get your job applications ready: write a professional resume with clean, ATS-friendly templates and download it as a PDF or Word file, then check it — or a resume you already have — the way applicant tracking systems read it, with a score, clear fixes and a keyword match against the job. Need a day off? Write a properly formatted leave application for school or the office, in English or Hindi, as a PDF, Word file or email. Getting married instead? Make a marriage biodata with your photo in English, Hindi or Marathi. Free, with no sign-up and no watermark, and your details stay in your browser.
Converters
Convert money, measurements, numbers and times instantly: binary, octal, decimal, hexadecimal and any base up to 36 with the working shown,160 currencies at today’s mid-market rates with history charts, 140+ units in 15 categories, Indian land area in bigha, katha, kanal, marla, guntha, cent and gaj with the sizes of your own state, Unix epoch timestamps to readable dates in any time zone, and any number or amount into words — Rupees … Only for cheques, lakh and crore, millions and Hindi — and text to Morse code and back, with sound, light and a tap key. Every converter runs in your browser and needs no sign-up; only the currency converter fetches the day’s rates.
- Unit Converter
- Unix Timestamp Converter
- Land Area Converter
- Currency Converter
- Number to Words
- Morse Code Translator
QR & Barcode Tools
Create QR codes and barcodes that never expire and never redirect through a tracking service, and scan any code with your camera or a screenshot to see safely what it contains. Everything is generated in your browser: QR codes work with any phone camera, and barcodes follow the GS1 and ISO standards that retail and warehouse scanners expect.
Security Tools
Create and test strong secrets, hash and verify passwords with bcrypt, generate SSH key pairs and convert private keys between PuTTY and OpenSSH formats, hide messages where no one will look, and check that websites are secured properly. Passwords are generated and checked on your device with your browser’s built-in cryptography; the SSL checker looks up public certificate records.
- Password Generator
- SSL Checker
- Image Steganography Tool
- Password Strength Checker
- PPK to PEM Converter
- PEM to PPK Converter
Internet & Network Tools
Everyday network checks in one place. See your public IP address (IPv4 and IPv6), provider and rough location, and test whether a VPN leaks your IP. Measure download and upload speed, then ping data centres around the world for latency, jitter and packet loss. Look up who owns a domain, IP address or network with RDAP whois, find the maker of any MAC address from the IEEE registry, and plan IPv4 and IPv6 subnets without a spreadsheet. Everything runs in your browser; each page says clearly when it contacts an outside service and what it sends.
Device Tests
Check your equipment in seconds, right in the browser. The keyboard tester lights up every key and catches keys that double-type; the mouse tester checks every button, the scroll wheel and the polling rate, and finds the unwanted double clicks of a worn switch. The mic test shows a live sound level and lets you hear yourself; the webcam test shows your picture with its real resolution and frame rate. The speaker test plays left, right and surround channels, sweeps from 20 Hz to 20 kHz and checks speaker wiring; the dead pixel test fills the screen with colours to find faulty pixels and measures your refresh rate; and the gamepad tester shows every button and trigger and checks the sticks for drift. The screen recorder captures your screen, a window or a tab with sound, your voice and a camera bubble, as MP4 or WebM with no watermark. Nothing leaves your device, and each test tells you what to fix when something does not work.
SEO & Marketing Tools
Practical tools for site owners and marketers: check any page’s on-page SEO — titles, indexing, structured data, link previews and access for AI search — with clear fixes, see which links on any page are dofollow, nofollow, sponsored or UGC and confirm a backlink, generate a clean XML sitemap by crawling your site, write and test robots.txt — including which AI crawlers may visit — then tag every campaign link so visits from WhatsApp, Instagram, email, ads and posters are counted correctly in Google Analytics, and turn it into a short link with a QR code and click statistics.
- UTM Builder
- Website SEO Checker
- Sitemap Generator
- Robots.txt Generator
- URL Shortener
- Dofollow Nofollow Link Checker
Games
Classic games that load instantly and run entirely in your browser — on a phone, tablet or computer, with nothing to install and no sign-up. Play Ludo with two to four players against the computer or friends, Snakes and Ladders on four boards with your own house rules, jigsaw puzzles of famous paintings or your own photo, a memory game with picture and learning card sets, Klondike solitaire with deals that can always be won, Spider Solitaire with one, two or four suits, and FreeCell with the same numbered deals as Microsoft’s, chess against a computer from beginner to master, mahjong solitaire on the classic turtle, a five-letter word game with unlimited words and a daily puzzle, Hangman with six word categories and a two-player mode, word search with 14 themes, a daily puzzle and printable sheets you can make from your own words, a block puzzle where full rows and columns clear, a bubble-popping game with bank shots, and an endless dinosaur run; steer a classic Snake with keys or swipes (or watch the computer fill the board), solve Sudoku from easy to expert with hints that explain the logic, a daily puzzle and printable sheets, chase 2048 with undo and an AI that suggests moves, clear Minesweeper boards that never need a guess, play Tic Tac Toe, Connect Four, Reversi and checkers (American rules or international, Brazilian and Russian draughts) against a computer that ranges from easy to tough or with a friend on the same screen, print bingo cards and real Tambola (Housie) tickets and call the game on screen, or settle a decision with a fair coin flip.
Why JustTools
Tools you can trust with your files
Private by design
Files are processed on your device, not on a server. Nothing is uploaded, stored or shared.
Fast and lightweight
Pages load quickly and tools respond instantly, even on slow connections and older phones.
Free, no strings
No sign-up, no watermarks, no daily limits and no paywalled “pro” features.
Works everywhere
Any modern browser on Android, iPhone, Windows, Mac or Linux. Nothing to install.
FAQ
