Diff Checker for marketers — meta descriptions, ads, social posts
Use Diff Checker to nail the exact character counts modern platforms care about. Browser-based, free, no signup, runs entirely on your device.
Most inputs you work with don't justify opening Word. Diff Checker is for the in-between cases — paste, transform, paste back. Browser-local, no signup, no character limits.
Open the tool: Diff Checker — Runs entirely on your device using open web standards.
Diff Checker for marketers
For marketers, Diff Checker fills a gap most marketers run into daily: a small text task that doesn't justify opening a heavyweight editor, but that doing by hand is error-prone. Open the page, paste, do the thing, paste back.
Common marketers workflows
- Quick checks before sending — counts, capitalization, formatting
- Cleanup of pasted-in content from another source (Word, Slack, web pages)
- Format conversion to fit a target medium with strict character limits
Try it now
Free, no account required, no watermark.
Frequently asked questions
Is there a length limit?
Practically, several MB of text. Beyond that the browser starts to lag.
Does Diff Checker save my text?
No. Diff Checker processes everything in your browser; nothing is uploaded or stored.
Can Diff Checker handle non-English text?
Yes — it uses Unicode-standard rules that work for most major scripts.
Does Diff Checker count characters with or without spaces?
Diff Checker shows both counts simultaneously, so you can use whichever your target requires.
Related guides
- Diff Checker for print — pages, columns, and layout estimates
- Diff Checker: a beginner's walkthrough
- A brief history of Diff Checker — where this idea came from
- Diff Checker for writers — drafts, manuscripts, and editing
- Find & Replace for marketers — meta descriptions, ads, social posts
- Character Counter for marketers — meta descriptions, ads, social posts
Ready to try it?
Try it now: Diff Checker. Browser-only. Nothing is sent to a server.
Last reviewed May 2026. File-size limits, portal requirements, and software defaults change over time — always verify with the destination platform before uploading time-sensitive documents. References to third-party services and products are for descriptive purposes only and do not imply any partnership or endorsement.