Writing tools on Toolcore cover more than spell-check replacements: readability scores, string similarity, line operations, and light cipher toys—all in the browser. Recent batches added similarity metrics, readability indices, and text utilities beside the long-standing diff and regex pages.
Compare two texts or measure overlap
- Jaccard similarity and Sørensen–Dice coefficient — set overlap on token or character splits.
- Levenshtein distance and character bigrams — edit distance and n-gram style comparison for short strings.
- Text diff — line or word diff when you need to see what changed, not just a score.
Readability and audience level
- Automated Readability Index (ARI), ARI (compact), and reading time — grade level and minutes-to-read from pasted prose.
- Browse Writing tab cards for Coleman–Liau, Gunning fog, SMOG, and Flesch-style indices added in calculator batches—each page documents its formula range.
Line cleanup and transforms
- Trim lines, join lines, split text, and wrap text — reshape pasted lists without Excel.
- Text repeater, reverse text, and Pig Latin converter — quick transforms for fixtures or demos.
- Extract URLs, extract emails, and word count — audit pasted blobs before sharing.
Markdown, regex, and structured text
- Markdown preview, Markdown to HTML, and HTML to text — round-trip checks on docs and email HTML.
- Regex tester with presets — still the hub for pattern debugging beside the new similarity tools.
For a broader cleanup workflow (CSV, dedupe, sort), see text cleanup without spreadsheets.