Finds the two classic caching mistakes on one page: immutable or month-long caching on files whose URL never changes, and near-zero caching on files that carry a content hash, plus any text asset served without compression.
Read the story behind this tool: Why Asset Cache Policy Audit exists.
Related: Compression Codec Audit / Edge Cache Effectiveness Probe / Font Loading Strategy
The audit fetches the page, picks up to 12 same-origin CSS, JavaScript, font and image files from its HTML, sends a HEAD request to each, and reads Cache-Control, ETag, Last-Modified, Content-Encoding and Vary. Files on other hosts are skipped.