Paste text above and hit Compare (or just type — it updates live).
Sent text to an editor, a colleague or an AI to "improve"? Paste the original and the rewrite below to see precisely which words changed — and which didn’t. The sample is one paragraph before and after a polish.
Rewrites — human or AI — are where meaning quietly shifts. "Soon" becomes "within two business days" (a commitment you're now making), "we think" becomes "we believe", a hedge disappears, a fact gets smoothed away. Paste the original and the rewrite above and every substitution is highlighted word by word inside its sentence, so you can accept the polish and catch the meaning changes before they ship.
Reviewing an editor's pass on your article without tracked changes. Checking what an AI assistant actually altered when you asked it to "fix the grammar" (they routinely rewrite more than asked). Comparing a translation round-trip. Verifying that a compliance-requested wording change didn't touch anything else. In each case the question is the same: what exactly changed? — and skimming two paragraphs side by side is famously bad at answering it.
Red marks words removed from the original, green marks words added in the rewrite; text outside the highlights is untouched. Unchanged sentences stay quiet entirely (tick Collapse unchanged for long pieces). If an AI rewrite also swapped punctuation — straight quotes to curly, hyphens to em dashes — those show as changes too; TextWash normalizes that layer if you want to see only the wording edits.
Drafts are private. The comparison runs entirely in your browser on a static page — nothing you paste is sent or stored anywhere. Want a colleague to see the same comparison? Share link compresses both texts into the URL itself; the link never touches a server either.