Issues

• JNICustomFilter leaks local references on every DCT block row

  mozilla/mozjpeg#460 · Filter by author QiuYucheng2003 opened on Sep 9, 2026

• [Workaround] Build error with CMake version 4.x: "Compatibility with CMake < 3.5 has been removed from CMake.".

  mozilla/mozjpeg#459 · Filter by author dreirund opened on Sep 5, 2026

• Preserve gain map of HDR JPEGs

  mozilla/mozjpeg#451 · Filter by author MartiCode opened on Dec 19, 2025
  3

• PNG support will not be enabled

  mozilla/mozjpeg#450 · Filter by author Mr-Z-2697 opened on Jan 20, 2025
  2

• Build error on master, on Ubuntu 24.04 vanilla

  mozilla/mozjpeg#449 · Filter by author tlacroix opened on Jan 17, 2025
  7

• looks like low-freq AC coefficient got flipped, maybe overflow caused by overshoot-based deringing?

  mozilla/mozjpeg#444 · Filter by author jonsneyers opened on Oct 9, 2024
  1

• How can you retrieve the quality value you specify when you run cjpeg on a file and you want it from what you got?

  mozilla/mozjpeg#442 · Filter by author FredWahl opened on Jun 9, 2024
  1

• Add option to identify / ignore HEIF formatted files

  mozilla/mozjpeg#439 · Filter by author YLSnewb opened on Nov 30, 2023

• ZLIB & PNG are found... then not found...

  mozilla/mozjpeg#438 · Filter by author YLSnewb opened on Nov 4, 2023
  3

• libjpeg-turbo 3.0.0 release

  mozilla/mozjpeg#437 · Filter by author lmfont opened on Sep 6, 2023

• Mozjpeg static cjpeg binary doesn't work without dlls on Windows

  mozilla/mozjpeg#436 · Filter by author MateuszKrawczuk opened on Jul 20, 2023

• No release for 4.1.3 tag

  mozilla/mozjpeg#435 · Filter by author lmfont opened on Jun 11, 2023
  3

• No output file if identical to input file

  mozilla/mozjpeg#434 · Filter by author FredWahl opened on Mar 16, 2023

• jpegtran optimized file size regression between mozjpeg and 3.1 and 4.1.1

  mozilla/mozjpeg#433 · Filter by author pts opened on Mar 14, 2023
  12

• Remove the -drop flag from jpegtran

  mozilla/mozjpeg#431 · Filter by author TheHardew opened on Jan 10, 2023

• It seems as if an older version of jpegtran produced smaller lossles jpg files

  mozilla/mozjpeg#430 · Filter by author FredWahl opened on Dec 11, 2022
  2

• Why doesn't this support macOS?

  mozilla/mozjpeg#429 · Filter by author PublicWorld opened on Nov 27, 2022
  3

• -sample 1x1 and default quality

  mozilla/mozjpeg#427 · Filter by author ccxvii opened on Nov 16, 2022
  2

• Windows Binary Upload to Release failed for 4.1.1 (missing privileges)

  mozilla/mozjpeg#424 · Filter by author swiffer opened on Sep 15, 2022
  3

• Feat.req. Setup Github Actions for nightly builds

  mozilla/mozjpeg#421 · Filter by author necros2k7 opened on Jul 11, 2022

• Avoid scaling the DC component too much at lower quality levels

  mozilla/mozjpeg#420 · Filter by author jrmuizel opened on Jun 27, 2022
  5

• Need help for jpeg

  mozilla/mozjpeg#409 · Filter by author DRCRecoveryData opened on Sep 20, 2021
  8

• mozjpeg doesn't honour non-optimized coding mode of libtiff

  mozilla/mozjpeg#398 · Filter by author rouault opened on Jun 17, 2021
  2

• Add multiplatform binaries and packages

  mozilla/mozjpeg#396 · Filter by author c33s opened on Apr 28, 2021
  1

• How to get sample value for existing image for compression

  mozilla/mozjpeg#394 · Filter by author shailenderjain opened on Mar 7, 2021
  4