# MozJPEG

> software library for processing JFIF images

**Wikidata**: [Q107094246](https://www.wikidata.org/wiki/Q107094246)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/MozJPEG)  
**Source**: https://4ort.xyz/entity/mozjpeg

## Summary
MozJPEG is a free software library for processing JFIF images, developed as a fork of libjpeg-turbo. It is distributed under multiple open-source licenses, including the Independent JPEG Group License, 3-clause BSD License, and zlib License. The project was created by Mozilla and has since evolved through numerous versions, with the latest stable release being 4.1.1 as of 2022.

## Key Facts
- MozJPEG is a software library for processing JFIF images, implemented in assembly language.
- It is classified as both a software library and free software.
- The project is based on libjpeg-turbo and implements the JPEG File Interchange Format.
- MozJPEG is distributed under the Independent JPEG Group License, 3-clause BSD License, and zlib License.
- The project has released multiple versions, including 1.0 (2014-03-05), 2.0 (2014-07-15), 3.0 (2014-12-30), 4.0.0 (2020-11-13), and the latest stable version, 4.1.1 (2022-08-15).
- MozJPEG is copyrighted and available on GitHub under the Mozilla organization.
- The project has a Wikipedia page and a category on Wikimedia Commons.
- MozJPEG is referenced in the Open Hub and Repology databases.
- The project has a SlackBuilds package for installation on Linux systems.
- MozJPEG's source code is hosted on GitHub, where it is maintained by the Mozilla community.

## FAQs
**What is MozJPEG, and how does it differ from libjpeg-turbo?**
MozJPEG is a free software library for processing JFIF images, developed as a fork of libjpeg-turbo. While both projects aim to optimize JPEG compression and decompression, MozJPEG is specifically maintained by Mozilla and distributed under multiple open-source licenses, including the Independent JPEG Group License, 3-clause BSD License, and zlib License.

**What programming language is MozJPEG written in?**
MozJPEG is implemented in assembly language, which allows for a strong correspondence between the instructions in the language and the architecture's machine code instructions.

**What licenses does MozJPEG use?**
MozJPEG is distributed under the Independent JPEG Group License, 3-clause BSD License, and zlib License. These licenses allow users to freely run, study, change, and distribute the software and modified versions.

**Where can I find the source code for MozJPEG?**
The source code for MozJPEG is available on GitHub under the Mozilla organization. The project is hosted at [https://github.com/mozilla/mozjpeg](https://github.com/mozilla/mozjpeg).

**What is the latest stable version of MozJPEG?**
The latest stable version of MozJPEG is 4.1.1, released on 2022-08-15.

## Why It Matters
MozJPEG plays a crucial role in the field of image processing by providing an optimized and free software library for handling JFIF images. Its development as a fork of libjpeg-turbo allows it to benefit from the performance improvements of that project while adding Mozilla's specific optimizations and licensing. The project's open-source nature ensures that it can be freely used, modified, and distributed, making it accessible to a wide range of developers and users. MozJPEG's implementation in assembly language further enhances its efficiency, making it a valuable tool for applications that require high-performance JPEG processing.

## Notable For
- MozJPEG is a fork of libjpeg-turbo, inheriting its performance optimizations while adding Mozilla's specific optimizations.
- The project is distributed under multiple open-source licenses, including the Independent JPEG Group License, 3-clause BSD License, and zlib License.
- MozJPEG has released numerous versions, with the latest stable version being 4.1.1 (2022-08-15).
- The project is maintained by the Mozilla community and is available on GitHub.
- MozJPEG has a Wikipedia page and a category on Wikimedia Commons, indicating its recognition in the broader knowledge ecosystem.
- The project is referenced in the Open Hub and Repology databases, further highlighting its significance in the software development community.

## Body
### Overview
MozJPEG is a software library for processing JFIF images, developed as a fork of libjpeg-turbo. It is classified as both a software library and free software, and it is implemented in assembly language. The project is distributed under the Independent JPEG Group License, 3-clause BSD License, and zlib License, allowing users to freely run, study, change, and distribute the software and modified versions.

### History and Development
MozJPEG was developed by Mozilla and has released multiple versions since its inception. Key versions include:
- 1.0 (2014-03-05)
- 2.0 (2014-07-15)
- 3.0 (2014-12-30)
- 4.0.0 (2020-11-13)
- 4.1.1 (2022-08-15, latest stable version)

The project is maintained by the Mozilla community and is available on GitHub, where the source code is hosted.

### Technical Details
MozJPEG is implemented in assembly language, which allows for a strong correspondence between the instructions in the language and the architecture's machine code instructions. The project is based on libjpeg-turbo and implements the JPEG File Interchange Format. It is copyrighted and available under multiple open-source licenses.

### Ecosystem and Community
MozJPEG has a Wikipedia page and a category on Wikimedia Commons, indicating its recognition in the broader knowledge ecosystem. The project is referenced in the Open Hub and Repology databases, further highlighting its significance in the software development community. Additionally, MozJPEG has a SlackBuilds package for installation on Linux systems.

### Related Projects and Implementations
MozJPEG is a fork of libjpeg-turbo, inheriting its performance optimizations while adding Mozilla's specific optimizations. The project implements the JPEG File Interchange Format and is distributed under multiple open-source licenses. Its source code is available on GitHub, and it is maintained by the Mozilla community.

## References

1. [Source](https://github.com/mozilla/mozjpeg/blob/master/LICENSE.md)
2. [Release 1.0. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v1.0)
3. [Release 1.0.1. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v1.0.1)
4. [Release 2.0. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v2.0)
5. [Release 2.0.1. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v2.0.1)
6. [Release 2.1. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v2.1)
7. [Release 3.0. 2014](https://github.com/mozilla/mozjpeg/releases/tag/v3.0)
8. [Release 3.1. 2015](https://github.com/mozilla/mozjpeg/releases/tag/v3.1)
9. [Release 3.2. 2017](https://github.com/mozilla/mozjpeg/releases/tag/v3.2)
10. [Release 3.3.1. 2018](https://github.com/mozilla/mozjpeg/releases/tag/v3.3.1)
11. [Release 4.0.0. 2020](https://github.com/mozilla/mozjpeg/releases/tag/v4.0.0)
12. [Release 4.0.3. 2021](https://github.com/mozilla/mozjpeg/releases/tag/v4.0.3)
13. [Release 4.1.1. 2022](https://github.com/mozilla/mozjpeg/releases/tag/v4.1.1)