v5.9.5-dev.12

Community-test prerelease ahead of the planned 5.9.6 release. The stable release and automatic-update channel remain unchanged.

Changes since dev.11

• Keep Luma/Chroma previews responsive while image metadata loads. Switching filters, sources, rows, or closing a viewer cancels superseded work and prevents stale effects from replacing the selected mode.
• Read structured PNG color metadata and PNG/JPEG/WebP ICC profiles, giving embedded metadata precedence over filename hints. Support profiles beyond the initial header and validate malformed metadata safely.
• Retry temporary metadata failures instead of permanently caching the fallback. Bound metadata download sizes, decompression, request duration, concurrency, and caches.
• Remove duplicate hover handling and unused code. Clarify the limits of browser-based color and gamma previews.

Install and test

Install the dev userscript manually in your userscript manager. Choose Update/Reinstall if prompted, then reload your comparison pages. If you installed a timestamped local test copy, disable it so only one yacomp copy is enabled.

Please focus on:

• Cycle filters with F, then switch sources and rows quickly while images load. The visible effect should match the selected mode, without stuck filters, frozen navigation, or stale loading indicators.
• In a three-column HDBits viewer, verify that 0 fits the complete image width and O permits horizontal scrolling when the original image is wider.
• Toggle the HDBits comparison/viewer switch in both directions; column selection should also apply when opening a thumbnail.
• Check per-source brightness/gamma adjustments, reset behavior, and repeated viewer close/reopen cycles.

For problems, report browser/version, the steps to reproduce, and a screenshot showing the mode indicator. Avoid including private tracker account information.

Validation

• 430 unit tests passed.
• 373 browser tests passed; one existing fixture-dependent test skipped.
• Source and test typechecks, unused-code checks, build verification, and manual Chrome testing passed.
• Built from the same source tree as the manually tested candidate.
• Reproduced the published userscript byte-for-byte with Bun 1.4.2, the release workflow's version, and repeated all unit/browser tests successfully with that version.

These filters are display-RGB inspection aids, not exact reconstruction of source-video HDR or YUV data.

Full changelog