How ZeroUpload Converts Files Without a Server
It sounds like magic: convert files with your internet off. Here's the actual technology that makes private, in-browser conversion possible.
February 20, 2026
Articles
Plain-English guides on file formats, conversion and keeping your files private.
PNG vs JPG vs WebP: Which Image Format Should You Use?
PNG, JPG and WebP each win in different situations. Here's the simple decision guide, plus how to convert between them without uploading anything.
February 3, 2026
Stop Uploading Your Private Files to Random Websites
When you drag a photo into a typical 'free' converter, it travels to a stranger's server. Here's what really happens to your files — and the safer alternative.
January 15, 2026