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Live demo

The review viewer with ~30 preloaded synthetic errors — the same tool we use for human verification of generated data. Every example carries its handler type, §-level schema tag, and applicability rating; the annotation buttons (or keys ++1++–++4++) record a verdict per example.

Open the demo full-screen ↗ — or try it right here:

Notes:

  • The examples are unfiltered generator output over news text — judging a few yourself is the fastest way to understand what synterr produces.
  • Annotations save to your browser's localStorage only; nothing leaves the page. Export/Import round-trips them as JSON.
  • The sample data is also downloadable: sample.jsonl. The viewer itself ships in the repo as tools/diff_viewer.html — drop any of your own generated JSONL onto it.