Overview
See what changed on any page since your last visit
What Changed automatically snapshots every page you visit and shows you exactly what's different when you return, word by word. No setup. No watchlists. No polling. Just browse as usual, and the extension runs in the background. How it works 1. Visit any page. The extension silently captures the main content. 2. Come back later. If anything changed, the badge lights up. 3. Open the side panel to see a clean, word-level diff. Additions in green, removals in red. Why it matters Pricing pages quietly raise prices. Terms of service change overnight. News articles get edited after publication. Job listings update requirements. You'd never notice unless something is watching for you. Features - Word-level diffs powered by Mozilla Readability and jsdiff - Smart extraction strips out ads, navigation, timestamps, and noise (only real content changes surface) - Significance scoring filters out trivial edits and A/B tests - SPA support detects client-side navigation in single-page apps - Configurable retention period (7 days to 1 year), significance threshold, and domain blocklist - Automatic deduplication — unchanged revisits use zero additional storage - Works on every page automatically. No configuration required. Private by design All data stays in your browser's local storage. Nothing is ever sent to a server. No accounts. No analytics. No tracking. Your browsing data never leaves your machine. Open source: https://github.com/Surfrrosa/what-changed
Details
- Version0.1.0 Beta
- UpdatedJune 4, 2026
- Offered byShaina Pauley
- Size48.37KiB
- LanguagesEnglish
- DeveloperShaina Pauley
441 33RD ST NAPT 1801 SAINT PETERSBURG, FL 33713-9043 USEmail
me@shainapauley.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
