Compare text online
Free tool for comparing two texts. Find differences quickly and securely.
Professional text comparison with change highlighting and side-by-side view. Everything works locally in your browser — your data never leaves your device.
100% private — comparison happens locally in your browser
- Paste or type the original text in the left panel. You can also use the copy button to paste from clipboard.
- Paste or type the modified (changed) text in the right panel.
- Click the "Compare" button — you'll see highlighted differences with additions, deletions, and changes clearly marked.
- Use the minimap on the right to quickly navigate to specific changes. Toggle between side-by-side and inline views.
Privacy: Your texts never leave the browser. All comparison happens locally on your device.
Is my data sent to a server?
No. All text comparison happens 100% locally in your browser using Monaco Editor. Your data never leaves your device — you have full control over your privacy.
How large texts can I compare?
You can compare texts with virtually no limit. Performance depends on your browser — for very large files (>1MB) there may be a brief delay when loading the diff view.
What's the difference between side-by-side and inline views?
Side-by-side view shows original and modified texts in two columns, making it easy to compare line by line. Inline view shows changes within a single column, with deletions and additions highlighted.
Can I edit the texts after comparing?
Yes! Both the original and modified texts are editable in the diff view. Changes are highlighted in real-time as you type.
Does the tool detect character-level or word-level changes?
The tool detects changes at multiple levels — it highlights both line-level differences and character-level changes within modified lines, giving you precise insight into what changed.