2026-09-08
Most free format converters online handle exactly one pair — JSON to YAML, or CSV to JSON — which means switching between config formats for a project (say, a JSON config you need as YAML, then that same data as a CSV export) means bouncing between several different single-purpose sites.
| Tool | Formats supported | Bidirectional conversion | Runs fully in your browser | Single tool for all pairs |
|---|---|---|---|---|
| iLoveDevTools | JSON, YAML, CSV | Yes, any pair | Yes | Yes |
| Typical single-purpose converters (e.g. json2yaml-style sites) | Usually one pair | Sometimes one direction only | No (server round-trip) | No — one site per pair |
Data Format Converter converts between JSON, YAML, and CSV in any direction from one page, processed entirely in your browser — useful for config files that need to move between formats without a config value (which might include real settings, keys, or environment-specific data) passing through a server.
Sites built around one specific pair — JSON-to-YAML, or CSV-to-JSON — tend to do that one conversion well, but need combining with a second (or third) site if your workflow touches more than two formats.
If your work regularly crosses between JSON, YAML, and CSV, iLoveDevTools covers all three from one tool. For a single, one-off pair, a dedicated single-purpose converter works just as well.