Your documents and ID numbers never leave this computer
We put that promise into the architecture rather than into marketing copy. Here is exactly how, and how you can check it.
Files are parsed and generated in browser memory. There is no network exit.
No analytics, no third-party fonts. Ad slots are served by Google AdSense, which uses its own cookies.
No accounts and no database. Close the page and your data is gone.
What we collect
Apart from two preferences you may leave in your browser (interface language and light/dark theme, stored in localStorage), we collect nothing. No account, no email, no device fingerprint. We cannot see the file names or the contents you process — they are never sent.
How files are processed
A dropped file is read into memory through the browser File API, then unzipped, parsed, text-replaced and repacked there, and finally handed back to you as a Blob for download. The whole loop stays inside this tab. Closing or refreshing the page releases it.
Network requests
Loading the page makes a handful of requests: HTML, CSS, JavaScript, the logo. Once loaded, the tool makes no further requests. Open the developer tools, enable “Preserve log”, and run a full cycle to confirm.
A hard constraint at browser level
The site sets Content-Security-Policy with connect-src none, which forbids the page from opening any kind of network connection. Even injected upload code would be blocked by the browser. That is a guarantee by policy, not by good intentions.
Third parties
None. No analytics, no error reporting, no support widget, no external font CDN. Third-party code is limited to two things: JSZip, shipped with the page to unpack docx / xlsx (no network), and the Google AdSense script, which only renders ads and never touches your files.
Cookies
Our own features set no cookies: language, theme and account data live in localStorage and can be erased with “clear site data”. The Google AdSense slot sets cookies on its own domains to select and measure ads; you can block them in your browser.
Your data, your control
There is no server-side copy to delete, because none was ever made. To erase everything, close the tab and clear site data. Exported docx and zip files exist only in the download folder you chose.
Free, and how that works
The tool is free with no paid tier. There are no server or data-processing costs, so keeping it alive is cheap. We do not monetise your files by selling, analysing or trading them — we technically cannot, and we have no intention to.
Still curious?
For privacy questions, open an issue in the project repository — a public thread is easier for everyone.
Try it — thirty seconds
No sign-up, nothing to install. Drop two files in and decide whether it deserves a bookmark.