How it works
- Drop HEIC, WebP, AVIF, GIF or BMP files.
- Choose the output format, quality and maximum size.
- Download the results as a ZIP.
Why use it
- Transparency kept.
- Lossless PNG output.
- Bulk with ZIP.
- Runs offline.
Questions and answers
Why is the PNG so much bigger?
AVIF is a very efficient lossy format. PNG is lossless, so it stores far more data.
Does it keep transparency?
Yes.
Related guides
JPG, PNG, WebP or AVIF: which format to use
We saved six photos and a graphic in all four formats at the same visual quality and compared the sizes. The newer formats win on photos by a wide margin, but each format still has a job.
Do online converters upload your files?
Most online converters send your file to a server; some do the work in your browser instead. Here is how to tell which kind a site is in about a minute, and what every request looked like when we converted a photo on our own site.