EVIDENCE FOR YOUR NEXT WEB DECISION

Last-modified Evidence Checker

Compare supplied content hashes and dates; flag timestamp changes without content changes.

Worked exampleBrowser processingUseful downloads

A clear result starts here

Add your input or try the worked example.

Using Last-modified Evidence Checker

Compare supplied content hashes and dates; flag timestamp changes without content changes.

Use Try example to explore last-modified evidence checker, or enter your own evidence csv / json.
Review the input format and the scope note before processing.
Choose Review input and inspect the result, including any review flags or unsupported cases.
Use the relevant download buttons to keep your result. CSV and report JSON preserve the available findings; original files are not changed.

Example

Evidence CSV / JSON: url,old_hash,new_hash,old_date,new_date
/guide,abc,abc,2026-10-01,2026-10-20
/pricing,def,ghi,2026-10-01,2026-10-01
/about,jkl,mno,2026-10-01,2026-10-20

Questions & answers

What does Last-modified Evidence Checker do?

Compare supplied content hashes and dates; flag timestamp changes without content changes.

What input does this tool support?

Evidence CSV / JSON: Columns: url,old_hash,new_hash,old_date,new_date

What should I check before using the result?

Compares evidence you supply, without crawling pages. Hashes must use the same algorithm and content normalization to be comparable.

Can I keep or share the result?

Yes. Use the result-specific downloads, CSV where available and report JSON. Downloads can contain your supplied information, so review the content before sharing. Processing runs in this browser; public pages also include the site’s approved advertising and optional analytics.