Lightroom Classic plugin that merges an SDR + HDR rendition into a single UltraHDR gain-map JPEG.
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Jun 15, 2026 - C++
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gain-map
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A python-based CLI utility for generating ISO-compliant UltraHDR JPEGs that trigger the HDR display feature in the Instagram app.
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Apr 22, 2026 - Python
Pure-Python SDR to Google Ultra HDR JPEG (gain map) converter — no libultrahdr needed. Output plays back HDR in Chrome, Android, iOS, macOS & Windows 11.
python jpeg image-processing image-converter computational-photography hdr tone-mapping hdr10 pq inverse-tone-mapping bt2020 ultrahdr gainmap ultra-hdr sdr-to-hdr gain-map iso-21496-1
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Apr 22, 2026 - Python
Tiny, zero-dependency local library server that serves your own folder of photos (or a macOS Photos library) to hdr.toys for HDR/gain-map editing — fully client-side.
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Jun 17, 2026 - JavaScript
Rust crate for encoding and decoding SDR or HDR JPEG images
rust jpeg icc jpeg-encoder hdr jpeg-image-compression jpeg-decoder hdr-image ultrahdr gainmap gain-map gainmaps jpegr
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Apr 4, 2026 - Rust
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