131 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, 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, 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
Count, analyse and transform text instantly: 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 anywhere.
- 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. 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
Design modern interface effects by eye and copy code that is ready for production: 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
Calculators
Accurate calculators for study, money and everyday life — 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, loan EMIs, SIP, PPF, fixed and recurring deposit growth with tax, credit card payoff plans, gross-to-net salary in Luxembourg, a janam kundli maker in Hindi or English, your exact age and exam eligibility, and BMI — with clear breakdowns of how every result is worked out.
Education Tools
Practise and prepare: test your typing speed in English or Hindi with exam-style passages, print OMR bubble answer sheets for mock tests and maths worksheets with answer keys, 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, 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, and monthly payslips with PF, ESI and loss of pay calculated for you. Every document is a clean PDF made on your own device — nothing is uploaded, and your details are saved only in this browser.
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. 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 measurements and times instantly: 140+ units in 15 categories, Indian land area in bigha, katha, kanal, marla, guntha, cent and gaj with the sizes of your own state, and Unix epoch timestamps to readable dates in any time zone. Every converter runs in your browser, uses exact definitions and needs no sign-up.
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
Check how fast and steady your connection really is, and plan IP networks without a spreadsheet. The speed test measures against Cloudflare’s global network from your browser; the subnet calculator works entirely on your device.
Device Tests
Check your equipment before the meeting starts. The mic test shows a live sound level and lets you record and hear yourself; the webcam test shows your picture with its real resolution, frame rate and lighting. Both run in your browser — sound and video never leave your device — and both tell 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. 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 against a computer that ranges from easy to unbeatable or with a friend, 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
