Skip to content
Devtools 360

About Devtools 360

Devtools 360 is a collection of 81 free online tools for the small jobs that eat up a working day — built to be fast, honest and private.

Why we built it

Most people only need to merge a couple of PDFs, shrink a photo for an email or format a JSON response a few times a week. Installing software for that is overkill, and many free websites ask you to upload private documents to unknown servers, add watermarks or push you towards a subscription. Devtools 360 takes a different approach.

How it works

Every tool runs inside your web browser. When you add a file, your browser reads it from your device and processes it with JavaScript, Web Workers and WebAssembly. The result is generated locally and downloaded straight from memory — your file is not uploaded to us. That design is why the tools are quick and why we can offer them for free.

Our principles

  • Genuine functionality. Every button does what it says. When a browser genuinely can't do something reliably — such as OCR or editing text inside a PDF — we say so instead of faking a result.
  • Privacy first. No accounts, no file uploads and no tracking of what you type or upload. Optional analytics only run with your consent.
  • Clear explanations. Each tool page explains how to use it, its limitations and the maths or standards it relies on.
  • Accessible to everyone. We design for keyboard and screen-reader users and aim to meet WCAG 2.2 AA.

What you can do here

Explore the categories:

  • PDF Tools — Merge, split, compress, convert and protect PDF documents in your browser.
  • Image Tools — Compress, resize, crop and convert JPG, PNG and WebP images instantly.
  • QR Code Tools — Create QR codes for links, Wi-Fi, email and contacts, or scan existing codes.
  • Text Tools — Count words, change case, compare text, clean up lines and convert Markdown.
  • Developer Tools — Format JSON, decode JWTs, encode Base64 and URLs, test regex and more.
  • Calculators — Percentages, age, dates, BMI, loans, GST, interest and unit conversions.
  • File Utilities — Convert CSV and JSON, format XML, extract ZIP archives and inspect files.
  • Design & Web Tools — Pick colours, build gradients and shadows, generate favicons and meta tags.

Who builds Devtools 360

Devtools 360 is designed, built and maintained by Mugesh Kannan and Amal. We use these tools ourselves every day, and we answer every message personally.

Get in touch

Found a bug or want to suggest a tool? Write to either of us, or use the contact page: