Most online utilities work by uploading your file to someone else's server, doing the work there, and handing back a download. For a holiday photo that's fine. For a signed contract, a payslip or a medical form, it's a decision you probably didn't mean to make.
Everything here runs in the browser instead. When you merge a PDF or crop an image on this site, the file is read by JavaScript in the page and never sent anywhere. There's no upload endpoint to send it to. You can check this yourself: open your browser's network panel while you use a tool, or pull the network connection after the page has loaded and watch the tools keep working.
That choice has costs, and we'd like to be upfront about them. Browser-only processing means no OCR on scanned documents, no pixel-perfect Office layout conversion, and a practical ceiling on file size set by your device's memory, not by a server farm. Where a tool has a limit, its page says so.
What's here
- PDF Tools (15 tools). Merge, split, rotate, encrypt and convert PDF files without uploading them to a server.
- Image Tools (11 tools). Resize, crop, compress and convert pictures, read their EXIF data, and generate QR codes and barcodes.
- Calculators (24 tools). Loan repayments, investment growth, tax, margins and break-even, with the formula and assumptions shown.
- Health Tools (9 tools). BMI, BMR, body fat, macros and hydration estimates, each page naming the method it uses.
- Converters (6 tools). Weight, length, temperature, number bases, fractions and colour codes, converted with exact factors.
- Text Tools (6 tools). Count words and characters, change case, clean up lists, generate placeholder text and encode URLs.
- Developer Tools (11 tools). Format JSON and SQL, diff structures, decode JWTs, hash strings and generate UUIDs, all client-side.
How it is paid for
Advertising, served by Google AdSense, and only after you agree to advertising cookies. There's no paid tier, no account, no newsletter and no data to sell. The tools never see our servers, so there's nothing on our side to monetise even if we wanted to. Ads are kept off the homepage, the blog and every policy page.
Who runs it
Allin1Tool is built and maintained by Klig Technologies, a registered proprietary firm based in Pune, Maharashtra, India. It's a small operation, not a team of specialists. We don't employ doctors, accountants or lawyers, and nothing on the site should be read as advice from someone who is. How the pages are written and checked is set out in the editorial policy.
Getting it wrong
Tools break and formulas get misread. If something here gives you a result you think is wrong, tell us at kligtechnologies@gmail.comand include the inputs you used. Corrections go to the front of the queue. Tools that can't be made to work honestly in a browser get withdrawn instead of being left up. A few have been, and their addresses now redirect to whatever comes closest.