Text Difference Checker
Compare two text blocks side by side and highlight additions, deletions, and changes.
1 unchanged · 0 removed · 0 added
About this tool
Comparing two versions of copy catches accidental deletions before publishing — essential for legal text, captions, and client approvals.
Side-by-side diff highlighting shows exactly what changed between drafts.
How to use the Text Difference Checker
- 1
Paste the original text in the left panel and the revised text on the right.
- 2
Review highlighted differences between the two versions.
- 3
Use the diff to audit caption edits, legal copy, or document revisions — all local.
When to diff text
Diff caption edits before A/B testing social posts. Compare CMS exports after plugin updates.
All comparison runs locally — sensitive drafts never leave your device.
Pro tips
- Paste the older version on the left, newer on the right for intuitive reading.
- Use with readability checker after major rewrites.
Social Media Specs & Character Limits
Optimal text formatting, length guidelines, and parameters for all major platforms:
| Platform | Max Length | Ideal Length | Hashtag Policy |
|---|---|---|---|
| Instagram Feed & Reels | 2,200 chars | 125 - 150 chars | 3 - 5 tags (Recomm.) |
| TikTok Posts | 4,000 chars | 100 - 200 chars | 3 - 5 tags (Ideal) |
| YouTube Description | 5,000 chars | 1,500 chars (SEO) | 3 - 10 tags |
| X / Twitter Post | 280 chars | 100 - 140 chars | 1 - 2 tags |
| LinkedIn Articles & Posts | 3,000 chars | 500 - 1,000 chars | 3 - 5 tags |
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Frequently Asked Questions
Is my text sent to a server?▼
No. Diff comparison runs entirely in your browser for privacy.
Can I compare long documents?▼
Yes, though very large texts may take a moment to process locally.