JustTools

JustTools is a free collection of 98 browser-based utilities — image compression, PDF merging, QR codes, EMI and BMI calculators, converters and games — that run entirely on your own device with no sign-up.

What is JustTools?

JustTools is a free online toolbox of 98 utilities split across image, text, PDF, developer, security, SEO, business, education, career, converter, network, QR and calculator categories. You paste text or drop a file into a browser tab and get the processed result back — a compressed JPG, a merged PDF, a QR code, a formatted JSON tree — without an upload step or an account. It runs in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux, and is funded by advertising rather than subscriptions.

What makes JustTools stand out?

• In-browser processing — files and text are handled locally on the device instead of a server, so contracts, statements, API responses and passwords are never uploaded, stored or shared.
• 98 tools in 14 categories — Image Tools (14), PDF Tools (17) and Developer Tools (23) are the largest sets, alongside text, security, SEO, business, education, career, converter, network and QR/barcode groups.
• No sign-up, no watermarks, no daily caps — every tool is free and unlimited; nothing is held back behind a pro tier.
• Target-size image compression — the Image Compressor accepts JPG, PNG, WebP and AVIF, can shrink photos by up to 90%, or compress to an exact KB target.
• PDF editing without uploading — merge PDFs in any order and select exact pages from each source file, plus split, compress, crop, rotate, redact, flatten, watermark, protect and remove passwords.
• India-specific document tools — GST invoice, bill of supply and quotation generation, salary slips with PF, ESI and loss-of-pay calculated, EMI schedules with prepayment impact, and Indian land units such as guntha, cent and bigha in the unit converter.
• Developer utilities — JSON formatter that reports the exact line and column of each error, JWT debugger, regex tester, HMAC and webhook signature checker, hash generator, cron tool, DNS lookup and worldwide DNS propagation checker.
• Games and classroom tools — Sudoku with printable sheets and logic hints, 2048 with undo, guess-free Minesweeper, typing speed tests in English and Hindi, OMR bubble sheet and maths worksheet generators.

Who is it for?

• Students and teachers: print OMR bubble answer sheets and maths worksheets with answer keys, pick students with a spinning wheel, split a class into random groups, and practise typing on exam-style passages in English or Hindi.
• Small business owners in India: produce GST tax invoices, bills of supply, quotations and monthly payslips as clean PDFs without paying for accounting software.
• Developers and site owners: format and validate JSON, debug JWTs, test regex, convert XML, CSV and JSON, check DNS records, audit a page's on-page SEO, and generate an XML sitemap or robots.txt including AI crawler rules.
• Job seekers: build a resume from ATS-friendly templates, download it as PDF or Word, then score it — with keyword matching against a specific job posting — the way applicant tracking systems read it.

What can you do with JustTools?

• Photographers and bloggers: compress JPG, PNG, WebP or AVIF images to a chosen file size, strip hidden EXIF location data, blur faces and private details, or build a full favicon package from a logo, text or emoji.
• Marketing teams: tag campaign links so visits from WhatsApp, Instagram, email, ads and posters are attributed correctly in Google Analytics, then shorten the link with a QR code and click statistics. QR codes and barcodes are generated locally and do not expire or route through a tracking redirect.
• Everyday money and health checks: calculate loan EMI with a full repayment schedule and yearly charts, work out BMI, find an exact age, or convert 140+ units across 15 categories including Unix timestamps to dates in any time zone.
• Security-conscious users: generate cryptographically secure passwords, passphrases and PINs, check password strength with bcrypt, convert SSH keys between PuTTY PPK and OpenSSH PEM, or hide a message inside an image.

How does JustTools work?

There is no account or file queue: you open a tool page, paste text or drop the file into the page, and the result is produced immediately on your own machine because the processing runs in the browser. Tools that genuinely need the internet to function — such as the SSL checker, DNS lookup, website SEO checker, sitemap generator or internet speed test — say so on their own pages, and the speed test measures against Cloudflare's network.

Pricing

JustTools is free to use, with no sign-up, no usage limits, no watermarks and no paid tiers. The site is funded by advertising, and ads never unlock a feature or receive the files you work with.

Alternatives

Other multi-tool utility sites in the same space include Smallpdf, iLovePDF, TinyPNG and Calculator.net.

FAQ

Is JustTools really free?

Yes. Every one of the 98 tools is free with no usage limits, no watermarks and no sign-up. JustTools is funded by advertising, and ads never lock a feature or receive the files and text you work with.

Are my files uploaded to a server?

No. JustTools processes files and text locally in your browser, so your data is not uploaded, stored or shared. Where a tool needs the internet to do its job — such as looking up a website's DNS or SSL records — its page states that clearly.

Do the tools work on my phone?

Yes. Every tool is built for touch screens and runs in any modern browser on Android, iPhone and iPad, as well as on Windows, Mac and Linux computers. Nothing needs to be installed, and pages are kept light for older phones and slow connections.

Can I request a new tool?

Yes. Use the contact page to send your idea; the site says user requests help decide which tools get built next. Past additions span image, PDF, SEO, security and education categories.

How many tools does JustTools have?

98 tools across 14 categories, including Image Tools (14), PDF Tools (17), Developer Tools (23), Security Tools (7), Text Tools (6), Games (6), SEO & Marketing Tools (5), QR & Barcode Tools (4), Education Tools (4), Calculators (3), Career Tools (3), Business Tools (2), Converters (2) and Internet & Network Tools (2).