What this release has been checked for.

Checked on 2026-10-11T09:35:54.730217+00:00. These results describe this release and the tested conditions, not every possible subtitle file or device.

• 11 core checks passed: strict timestamps, Unicode counts, damaged-file export protection, nested overlaps, format metadata, immutable retiming, explicit trim/drop policies, two-anchor correction, comparison and file limits.
• Native Edge exercised all four tools with real file inputs and downloaded output files and reports.
• The workflow check confirmed that editing settings invalidates old exports and independent before/after file reads both finish.
• During the public HTTPS workflow checks, all observed requests were same-origin GET requests. No subtitle upload or external request was observed.
• All 17 pages and their internal navigation were checked. Homepage and comparison layouts were checked at 390 pixels and desktop width.
• The Cloudflare pages.dev release was exercised in native Edge: all 17 public pages, all four tools, real file inputs, exported downloads and mobile layouts. The run passed 208 assertions with no browser JavaScript errors.
• Public static assets were read back and matched the authored files. The production security headers were observed, and a normal Edge request to a missing page returned the authored HTTP 404 page.

Known limits

• Subtitle checks do not verify audio, translation quality, accessibility compliance or destination-player acceptance.
• WebVTT processing supports a text-oriented subset. Converting rich WebVTT to SRT loses positioning, regions, styles and extended markup.
• Comparison pairs cues by position; inserted or deleted cues can change correspondence.
• Independent domain binding, real AdSense review, advertisement display and income have not been verified.

Check a result yourself

Load an original example, run the tool, and download its JSON report. The report records the thresholds or transformation used. Inspect the unchanged source and new output in a separate player.