DevKit Forge

Snapshot Compare

Compare two page snapshots exported from the DevKit Forge extension by module, with regressions flagged.

Web + extension (hybrid)Runs in your browser

Snapshots are taken in the extension. Paste their JSON here to compare; nothing is uploaded or fetched.

About this tool

Snapshots are summaries of a page (metadata, headings, links, structured data, DOM counts, load timing and audit findings) that the DevKit Forge extension takes in your browser. Paste the JSON of two snapshots, or the extension's compare export, to see what changed by module and which changes look like regressions.

This page cannot take a snapshot: it never opens or fetches a site. It only compares JSON you bring, in your browser, and nothing is uploaded. Files over 10 MB are refused.