Media Extractor Pro, developed by Alice Sn0w, is a Firefox extension for collecting and auditing embedded media on web pages. It detects videos, audio, and streaming manifests while letting users preview, filter by size or quality, and rename files before download. Key functions include HLS/M3U8 detection, Smart Deduplication, and Watch Mode for dynamic pages. The tool targets web developers, content creators, and power users who need precise control over media asset extraction and metadata verification for auditing and asset collection workflows.

Detects embedded and streaming media through multiple discovery paths

The tool identifies media using both DOM scanning and network interception, plus manifest parsing for HLS/M3U8 streams. Source Tracking badges label each item by origin, showing whether an asset came from the page structure, intercepted requests, or a streaming manifest. That multi-path detection helps auditors find assets that standard element-only scrapers miss, and it supports verification of the exact URL used by the page.

Supports batch workflows and metadata-driven organization for asset collection

The app includes batch renaming with dynamic variables and a configurable download queue to control simultaneous transfers. An Integrated Size Filter hides small images and ad files, and Watch Mode automates capture on infinite-scroll or live pages. Typical workflows covered include bulk asset harvesting for site audits, organizing bundles by {domain} and {date}, and staging files for local processing or archival checks.

Preview and verification tools suit technical review but assume developer familiarity

Real-time detection of resolution and duration provides quick verification before download, and previews show codec and duration metadata for each candidate. The interface surfaces detection provenance so a reviewer can confirm whether a stream came from a manifest or an inline element. These verification controls support forensic checks, though they require familiarity with media terms and browser network concepts to use efficiently.

Powerful local processing comes with elevated permissions and deployment trade-offs

The extension runs entirely in the browser with local-only processing, avoiding external servers, but it requires a Very High Risk permission profile to intercept network requests and access page data. That permission model is necessary for deep discovery, and it means enterprise deployment needs administrative review. The tool is compatible with Firefox on desktop and Firefox for Android, so audits can run across standard desktop and mobile Firefox installations.

A practical choice for technically proficient auditors who accept permission trade-offs

Media Extractor Pro is a practical option for web developers, auditors, and power users who need direct, local control over on-page asset collection; its primary trade-off is an elevated permission profile that requires administrative oversight during deployment. For teams that enforce strict extension policies, deploying the tool demands coordination with security or IT staff before widespread use.