Fast browser-based tools for comparing, inspecting, and cleaning text & JSON

Free, privacy-friendly utilities for developers, writers, and product teams. No sign-up, no tracking of your input data.
  • Text comparison & similarity scoring
  • JSON viewer & repair
  • Character count & word/number converter
Your input stays in your session — tools process what you paste so you can get answers quickly and move on.
Text compare
Highlight exactly what changed between Version A and Version B.
Open tool Try similarity
Similarity score
Get a similarity percentage with normalization + shingles/grams.
Open tool Try compare
JSON viewer
Format, validate, copy/download — and try best-effort repair for broken JSON.
Open tool Compare payloads
Character count
Chars / no-spaces / words / lines + presets for Tweet/X and meta tags.
Open tool Word ↔ Number
Word ↔ Number
English-only converter (short-scale) with negatives and decimals.
Open tool Count text