Copy gets approved in a Google Doc. Built in an email tool. Published on a website. Entered into an app. At every handoff, there's a risk that text is changed — intentionally or accidentally. A word is dropped during copy-paste. A sentence is reworded by the developer. A date is updated without approval.

QA teams need to verify that what shipped matches what was approved. ChangeChecks makes this a 10-second check instead of a manual side-by-side read.

The copy verification workflow

Copy the approved text from the source document
Paste it on the left side of the Text Compare tool
Copy the live text from the email, website, or app
Paste it on the right side
Click "Find differences"

If the texts are identical, you'll see a green card: "These texts are identical." If there are differences, every changed word is highlighted and the summary tells you exactly how many changes were made.

What to catch

  • Missing paragraphs or sentences dropped during implementation
  • Changed dates, prices, or names swapped without approval
  • Extra whitespace, line breaks, or formatting characters from a CMS
  • Reworded calls-to-action or legal disclaimers
  • Truncated text where a character limit cut off the message

Scaling across multiple assets

One comparison per asset is faster than it sounds. For launch campaigns with dozens of emails, landing pages, and ads, the check takes seconds per asset and catches errors a visual review would miss — especially with similar-looking text where a single word change is the only difference.

For email proofing specifically

Email builds often introduce subtle text changes. HTML rendering, template engines, and content management systems can all modify text during the build process. Compare the approved copy against the rendered email text (view source or copy from the preview) to verify nothing was lost in translation.

Pre-launch copy stays on your device. Approved-but-unshipped copy is sensitive — embargoed announcements, unreleased pricing, names not yet public. ChangeChecks runs the comparison entirely in your browser; nothing is uploaded.