Compare drafts
Paste your original text and your edited version. See a word-level diff and exactly what the edit did to the writing — not just what changed, but whether it got easier to read.
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What the edit did
| Metric | Before | After | Change |
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Stats for what you've pasted so far
Paste text into both boxes to see a diff and a metric comparison. With only one box filled in, here are the stats for what you've got so far.
No differences — the two drafts are identical.
These drafts are large enough that a full word-level diff would be slow, so this is a paragraph-level diff instead — whole paragraphs will show as changed even where only one word moved.
Diff
RemovedAdded
What the numbers do and don't tell you
Passive-voice count and wordy-phrase count moving down are about as close to unambiguous as a writing metric gets — fewer of both is fewer of both. Average sentence length is judged the same way, but only in one direction: it's marked as an improvement when a genuinely long average (over 20 words) got shorter, and left unjudged everywhere else, because a sentence going from 14 words to 11 isn't an improvement, it's noise.
Flesch Reading Ease and grade level are shown as plain numbers with no colour and no verdict, on purpose. This site's own explanation of where readability formulas fail argues that a lower grade level isn't automatically better writing — the formulas count syllables and words per sentence, not whether the edit made the point clearer. Treat the score movement as one data point, not the answer.
When a diff looks alarming but isn't wrong
If you reordered a paragraph instead of just editing sentences inside it, the diff will show a large block deleted and a large block inserted, even if every sentence in that paragraph is untouched. That's the diff algorithm working correctly — it's comparing position, not intent — but it can look like a much bigger rewrite than it was. If a change looks bigger than you remember making, check whether it's actually a move rather than a rewrite.
Why whitespace is ignored by default
Pasting from a word processor or a CMS often changes a single space to a non-breaking space, or a line break style, without changing a single word. With "ignore whitespace" on — the default — differences like that don't show up as changes, so the diff reflects edits you actually made rather than formatting your editor introduced silently.