Free · No signup · No limits
Free online tools for developers & creators.
No signup. No limits. Just tools.
A growing collection of 39 free browser-based tools. Everything runs in your browser. Your files never leave your device.
Why boxtool.io
A toolbox that respects your time and your privacy.
Most “free” online tools bury a simple task under ads, paywalls, and sign-up walls — and quietly upload your files to their servers. boxtool.io is the opposite: a clean, fast collection of single-purpose tools that do one thing well and keep your data on your own device.
Private by design
Every tool that touches your files runs entirely in your browser. Your documents, images, and data are never uploaded to a server — they never leave your device.
Fast and frictionless
No accounts, no upload waits, no install. Open a tool and use it. Large files are processed at the speed of your machine, not your internet connection.
Free, with no catch
All 39 tools are free to use with no limits. We keep the lights on with unobtrusive ads and optional support — never by selling your data.
From the blog
Guides & how-tos
The Font That Looked Fine Until It Reached the Web
The typeface was perfect in the mockup. Then the page loaded, blinked, and swapped fonts halfway through a sentence. Here is what happens to a typeface on its way from a designer’s folder to a stranger’s browser.
The Formatting You Never Asked For
You just want the words down, but the app keeps making formatting decisions you never asked for. Here is why writers keep drifting back to plain text — and how a few small symbols give you structure without the fight.
The Beat You Feel but Never Count
Every song runs at a speed you can feel but never see. Here is why that hidden number quietly decides whether music carries you along or fights you — and how to finally put a figure on it.