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v1.0.34

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@github-actions github-actions released this 04 Oct 06:03
· 5 commits to main since this release
v1.0.34
b383a9f

1.0.34.0 - 2026-10-04

  • Fixed HDR filmstrip appearance: gain-map images now preview their authored SDR base instead of reconstructing maximum HDR gain and applying another fixed ACES curve. Single-layer HDR thumbnails use the viewer's SDR white reference and compress highlights with a shared RGB scale, preserving midtones and color ratios.
  • Fixed SDR JPEG XL thumbnails and transparent thumbnail pixels, including HDR JPEG XL. Linear floating-point JPEG XL now retains extended-range pixels through a float decode path instead of being decoded as SDR. Added real-file pixel comparisons against an independently decoded SDR base and equivalent PQ/HLG/linear samples.
  • Kept the filmstrip and toolbar on one row, with thumbnails sized to the available column. Hidden filmstrips stop decoding and release their images; refreshing a folder keeps provisional previews, and failed items are not decoded repeatedly while they remain in the retained window.
  • Corrected EXIF orientation handling for HDR/SDR exports and Gain Map crops. Linear TIFF/EXR exports avoid unused PQ statistics and preserve existing destinations on cancellation.
  • Moved preview analysis onto cancellable background work with stale-result protection, and cached tone-map analysis separately by view mode.
  • Hardened Live Photo preparation and image navigation against stale asynchronous results; canceled video extraction no longer leaves a partial cached file.

Install

  1. Download HdrImageViewer-1.0.34-win-x64-portable.zip.
  2. Extract the zip to a normal folder, for example C:\Apps\HdrImageViewer.
  3. Run HdrImageViewer.exe.

Requires the x64 .NET 10 Desktop Runtime and Windows App Runtime 2.2. No certificate installation is required for the portable zip. Windows may show a SmartScreen warning because this GitHub build is unsigned.

Recommended Install

For most users, install the Microsoft Store version so Windows handles signing and updates.

Bundled Format Tools

The x64 portable build includes the pinned JPEG XL, AVIF, HEIC, OpenEXR and Ultra HDR codecs and command-line tools. No separate MSYS2 installation is required for these formats.

JPEG Ultra HDR and HEIC / AVIF ISO Gain Map exports support monochrome and RGB gain maps. Codec versions and source checksums are recorded in eng/codecs.lock.json.

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