Welcome to the Zerosend Blog
We are launching the official Zerosend blog for English-speaking users. Notes on privacy-first browser-based file processing tools, with no uploads.
Hello
We are starting the English Zerosend blog. Here we will share notes on the privacy-first online tools we build, the browser technologies we use to keep your files on your device, and the engineering decisions behind every tool you can find at zerosend.site/en.
What you can expect
Our focus is narrow on purpose. Posts will cover three buckets:
- Browser-based processing: How modern browsers (Canvas, Web Workers, WebAssembly, the File System Access API) replace many things that used to require server uploads.
- Privacy by design: Why we never send your files anywhere, how we set up Content Security Policy, and how you can verify these claims yourself with browser DevTools.
- Behind each tool: Technical posts on image compression, PDF merging, video conversion, favicon generation, and more — including known limitations.
How often we post
Updates will be irregular but tied to product changes. The full list of posts lives at /en/blog. You can also subscribe via the upcoming RSS feed.
Try the tools
If you have not yet, browse the full toolkit at /en. Everything is free, requires no sign up, and runs entirely inside your browser.
Thanks for stopping by.