Quick take
Paste two versions of text and see exactly what changed.
- Compare two versions of release notes before publishing.
- Check what changed between an original paragraph and an edited draft.
Text Diff Checker
live
3Added lines
2Deleted lines
2Changed blocks
Line one
Line two Line three
Line 2 Line three Line four
Inline sample: Line one
Where it fits
Use Text Diff Checker for reviewing copy edits, release notes, config snippets, export revisions, and before-and-after text blocks. It works well when you want line and inline differences that show added, removed, and changed text and do not need a bigger workflow around it.
- Best fit: reviewing copy edits, release notes, config snippets, export revisions, and before-and-after text blocks.
- You start with an original text block and a revised text block.
- The useful choices are which version goes on each side, whether to swap inputs, and how much surrounding context to compare.
- Check deleted clauses, changed numbers, punctuation-only edits, and accidental whitespace changes.
- You end up with line and inline differences that show added, removed, and changed text.
How to use Text Diff Checker
- Start with an original text block and a revised text block.
- Choose which version goes on each side, whether to swap inputs, and how much surrounding context to compare.
- Run the tool once, then review deleted clauses, changed numbers, punctuation-only edits, and accidental whitespace changes.
- Copy, export, or download line and inline differences that show added, removed, and changed text.
- Read the final output once before you keep or send it.
How it behaves
- The tool uses local text diff logic to compare original and modified input.
- Line-level additions and deletions are highlighted, with an inline sample for word changes.
- Inputs stay in browser state and can be swapped or cleared at any time.
Common mistakes
- Line-based comparison is best for paragraphs, code snippets, and structured text where nearby context matters.
- Inline highlighting helps find small word-level edits that are easy to miss in long sentences.
- Normalize line breaks before comparing text copied from PDFs, emails, or rich text editors.
- Use the diff as a review aid, not as the final authority, when legal or financial wording matters.
How your data is handled
Text comparison runs in your browser. Toolumina does not upload, save, or log the text you compare.
FAQ
Does this compare text line by line?
Yes. The main output highlights added and removed lines.
Does it show inline differences?
Yes. The page includes an inline word-level sample for the first compared line.
Is my text uploaded?
No. The diff is calculated locally in the browser.