Skip to content


You can sponsor development through OpenCollective, funds will be used for maintenance and further development according to the roadmap.

OpenCollective backers



Support this project with your organization. Your logo will show up here with a link to your website. [Contribute]


NLNet - 2021

The project has received a grant from NLNet in 2021 for the implementation of full encode support, ARM filter optimizations to improve decode performance, and updates to the benchmark utility to test encode performance and explore faster encoder configurations.

The work was published in the following releases:

NLNet - 2023

The project has received a second grant from NLNet in 2023 for the implementation of full Animated PNG (APNG) support.

Work is currently in progress.