All work
Conventro · Web App
Browser-based file format converters
40+ free converters between JSON, YAML, CSV, XML, TOML, INI and ENV that run entirely in the browser, so data never leaves the user's machine.
- Client
- Conventro
- Type
- Web App
- Live product
- conventro.com
The challenge
Developers paste API keys and config files into online converters that upload them to unknown servers, and most tools cover only one or two formats.
What we built
A fast, SEO-friendly Next.js site where every conversion runs locally in JavaScript: paste or upload, convert in under a millisecond, copy the result. No sign-up and no server uploads.
Key features
- 40+ converters across 7 formats, plus MessagePack, BSON and HAR
- 100% in-browser processing, zero server uploads
- Instant results with one-click copy
- Multi-language, SEO-optimised tool pages