Free PDF, image, video, developer and everyday tools that run entirely in your browser. No uploads, no sign-up, no limits.
Free PDF tools that run in your browser
Free document builders that run in your browser
Private OCR tools that run in your browser
Free text tools that run in your browser
Private spreadsheet, CSV and JSON tools
Zip, unzip and inspect files in your browser
Free image tools that run in your browser
Free color and CSS design tools that run in your browser
Free QR code tools that run in your browser
Free social media image tools that run in your browser
Private meme tools for instant internet nonsense
Convert, subset and preview fonts in your browser
Free media tools powered by in-browser WebAssembly
Private screen, camera and voice recorders in your browser
Free musician tools that run in your browser
Free private developer utilities
Private security utilities that run locally in your browser
Free SEO tools that run in your browser
Free network and browser tools that run in your browser
Private AI tools that run on your device
Free calculators that run in your browser
Free finance calculators that run in your browser
Free health and fitness calculators that run in your browser
Free math solvers that run in your browser
Free time tools that run in your browser
Coordinate, distance and GPS file tools
Free typing, reaction and clicking speed tests
Test your webcam, mic, keyboard and screen online
Tiny chaos engines for fair picks, teams, dice and decisions
Files are processed by your own browser with JavaScript and WebAssembly. Nothing is uploaded, stored or logged on a server.
No accounts, no email walls, no queues. Open a tool and it is ready — results appear in milliseconds for most tasks.
Every site is an installable web app. After the first visit, most tools keep working even when your connection drops.
Guides and instructions are available in English, Spanish, German, French, Italian, Portuguese, Polish, Ukrainian and more.
Search above or browse the categories below — every tool lives on a focused site like pdf.uttily.com.
It is read directly by your browser. You can even disconnect from the internet first if you like.
Save the output straight to your device. Close the tab and every trace of your data is gone.
Most "free" online converters work the same way: you upload a file, it is processed on someone else's server, and you download the result — hoping the original is deleted afterwards. Uttily takes the opposite approach. Every tool on every Uttily site runs inside your own web browser. Your PDF, photo, video or spreadsheet is read straight from your disk into the page, processed with JavaScript, the Canvas API and WebAssembly, and saved back to your device. It never travels across the internet, so there is nothing to intercept, store or leak.
That design is also why the tools feel fast. There is no upload progress bar and no queue on a busy server — the work starts the moment you drop a file, using the processor in your own laptop or phone. Heavy jobs such as video conversion, OCR and background removal use the same WebAssembly engines that desktop apps rely on, compiled to run in the browser.
Instead of a single bloated app, Uttily is split into 29 focused sites. PDF Tools merges, splits and compresses documents; Image Tools resizes, converts and removes backgrounds; Media Tools converts audio and video; Dev Tools formats JSON, YAML, SQL and more; and Calc Tools covers everyday calculators. Each site only loads the code its tools need, which keeps pages light and quick on slow connections.
You never need an account, and there are no watermarks or daily limits. Every site can be installed as a web app and keeps working offline after your first visit, which makes it handy on flights or unreliable Wi-Fi. Guides are available in 11 languages, and the project is supported by light advertising rather than by selling your data.
Pick a tool and get it done — privately, in seconds.