An ad-light, privacy-first converter
Your data never leaves your device.
Ads are minimal — and never on the tools
The free tier of ConvertHub shows at most a single ad unit, placed below the fold on the home page only. There are no ads on any converter page, where you paste JSON, CSV, YAML, JWTs, or database dumps. Ads never interrupt a conversion and never see your data — the same strict connect-src 'self' Content-Security-Policy that keeps your input on-device applies everywhere.
A fully ad-free Pro tier is coming
A future ConvertHub Pro tier will remove ads entirely and add folder-batch conversion, large-file streaming (over 50 MB via the Streams API and IndexedDB), and saved presets — all still 100% client-side, with no upload. It is not available yet.
Every converter works fully and free today, with no key required.