Firehose
URL Watch

Diffs & crawl history

Read what changed between two crawls of a watched URL, including the added and removed content, and work through the recorded crawl history.

View as Markdown

Open any watch to see its crawl history — one entry per crawl attempt, newest first — and the diff for each crawl that changed.

What a crawl records

Every crawl attempt produces a history entry, whether or not the page changed:

  • Changed — the entry carries a diff of inserted and removed content versus the previous snapshot.
  • No change — recorded with an empty diff, so you can see the page was checked and was stable.
  • First crawl — establishes the baseline snapshot; there's nothing to diff against yet.
  • Error — the page couldn't be fetched or rendered; the entry notes the error.

Reading a diff

A diff is a set of chunks marking text that was added or removed since the last crawl. The detail view renders these inline so you can scan what changed at a glance and open the rendered page snapshot itself.

Next steps