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jpegoptim

Command-line utility that optimizes and compresses JPEG files with lossless Huffman table optimization and optional lossy quality limits.

jpegoptim is a command-line program that optimizes JPEG files. Its lossless mode optimizes the Huffman tables of a file, and its lossy mode sets an upper limit on image quality. The man page lists the options for each.

By default the program modifies an input file when it is optimized, and the -d option writes the optimized files to another directory instead. Source archives are built with ./configure and make, and the build needs the libjpeg library, which the README lists as version 6b or later.

Worth knowing

The project has no site of its own. Its description and source archives sit on the maintainer’s personal project page, and the source is also on GitHub.

Identity

Status
Active
Maintainer
Timo Kokkonen4
Maintained by
Individual
First release
20226

Rendering and deploy

Runs as
Dev only3
Install with
source build with ./configure, make and make install5

Releases

Current major version
16
Last release
2025-09-156

Adoption

GitHub stars
1,8272
Contributors
227

Why these figures do not compare

Sources

  1. 2026-10-28: links
    www.kokkonen.net/tjko/projects.html
  2. 2026-10-28: links, Written in, GitHub stars
    api.github.com/repos/tjko/jpegoptim
  3. 2026-10-28: links, Categories, Runs as
    raw.githubusercontent.com/tjko/jpegoptim/main/jpegoptim.1
  4. 2026-10-28: Maintainer, License, License model
    raw.githubusercontent.com/tjko/jpegoptim/main/COPYRIGHT
  5. 2026-10-28: Runtime, Install with
    github.com/tjko/jpegoptim/blob/main/README
  6. 2026-10-28: First release, Current major version, Last release
    api.github.com/repos/tjko/jpegoptim/releases
  7. 2026-10-28: Contributors
    api.github.com/repos/tjko/jpegoptim/contributors

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