Last updated: June 2026
useformat is built around one idea: your files are your business, not mine. This page explains plainly what happens to your data when you use the site — there's not much of it, but you deserve to know exactly what there is.
In browser mode (the default), your files are converted entirely on your own device. They are never uploaded, never seen by me, and never stored anywhere. When you close the tab, they're gone. I have no copy and no way to get one.
Most conversions — images, audio, video, PDFs, spreadsheets, archives, and more — run inside your browser using WebAssembly. The file never leaves your device. No upload happens, no server is involved, and nothing about the file is recorded. This is the whole point of useformat.
A few formats (such as Word and PowerPoint documents, or certain ebooks) need tools that can't run in a browser. For these, the file is sent to a small server I run, converted there, and the result sent back to you. When server mode is used:
If you choose to send a bug report, the form collects what you type, plus — only if you provide it — your email address (so I can reply). It also automatically attaches basic technical details to help me fix the problem: your browser type and version, operating system, screen size, and the page you were on. This is sent to me through a form service (Web3Forms) and lands in my email inbox. It's used solely to fix bugs and reply to you, and nothing else.
The site is served through Cloudflare, which acts as a security and delivery layer. Like virtually all websites, this means standard technical information (such as your IP address and the type of request) passes through Cloudflare and the server in order to deliver the page to you and protect against abuse. This is normal web-server activity, not tracking, and isn't used to build a profile of you.
useformat has no advertising, no third-party tracking pixels, and no sign-up. I don't sell, rent, or share your data with anyone — there's nothing to sell, and I wouldn't anyway. I may keep simple, privacy-respecting counts of how many people visit (with no personal data and no cookies that follow you around), purely to know whether the tool is being used.
If you choose to support the project via Ko-fi or Buy Me a Coffee, those payments are handled entirely by those platforms under their own privacy policies. I never see your card details — I only see that a tip was made.
Because browser-mode conversions collect nothing, there's usually nothing of yours for me to hold. If you've sent a bug report and want it deleted, just email me and I'll remove it. If you're in the EU/UK, you have rights under GDPR (access, deletion, and so on) — email me and I'll sort it.
If this policy changes, I'll update the date at the top. Since useformat is a small personal project, changes will be rare and I'll keep them honest and plain.
Questions about privacy? Email [email protected] and I'll happily answer.