WebP and AVIF image support

[Nir Lisker]

There was a survey about media-related enhancement some years ago. I didn't
follow what came out of it.

https://mail.openjdk.org/pipermail/openjfx-dev/2022-July/034949.html

On Thu, Dec 4, 2025 at 7:55 AM Glavo <zjx001202 at gmail.com> wrote:

> Hi Kevin,
>
> Compared to other difficulties, the most troublesome part of TwelveMonkeys
> for us was the color shift bug[1] when decoding images.
> Our program allows users to choose their own background images, but this
> bug is causing all WebP background pictures to appear greenish :(
>
> Additionally, JavaFX still doesn’t natively support any high-quality
> animated image format.
> GIF quality is too poor. To support high-quality animated images, we had
> no choice but to implement APNG decoding ourselves in the program.
> However, APNG files are insanely large — one of my 5-second, 1920×1080, 60
> fps animated wallpapers ends up reaching 1 GiB in size, which makes APNG
> almost equally impractical.
> It would be great if JavaFX could natively support animated WebP.
>
> Glavo
>
> [1]: https://github.com/haraldk/TwelveMonkeys/issues/734
>
> On Thu, Dec 4, 2025 at 4:31 AM Kevin Rushforth <kevin.rushforth at oracle.com>
> wrote:
>
>> We don't currently have any plans to add such support, but could consider
>> it if there was enough demand.
>>
>> Now that we have support for using Java2D's ImageIO an application could
>> provide one or use a third-party ImageIO loader for those formats, but that
>> would have similar limitations to those mentioned (it wouldn't support
>> animated images and the application would need to bundle the loader).
>>
>> -- Kevin
>>
>>
>> On 12/3/2025 12:09 PM, Andy Goryachev wrote:
>>
>> And HEIC.
>>
>> -andy
>>
>> *From: *openjfx-dev <openjfx-dev-retn at openjdk.org>
>> <openjfx-dev-retn at openjdk.org> on behalf of Glavo <zjx001202 at gmail.com>
>> <zjx001202 at gmail.com>
>> *Date: *Wednesday, December 3, 2025 at 12:01
>> *To: *openjfx-dev <openjfx-dev at openjdk.org> <openjfx-dev at openjdk.org>
>> *Subject: *WebP and AVIF image support
>>
>> Hi,
>>
>> The image formats supported by JavaFX have not been updated for a very
>> long time. However, more and more content providers are now adopting newer
>> formats such as WebP and AVIF.
>>
>> For example, our application needs to display icons for Minecraft mods,
>> modpacks, and other content sourced from Modrinth, and the vast majority of
>> these icons are in WebP format. To work around this, we currently have to
>> bundle TwelveMonkeys into our program, decode the images to BufferedImage,
>> and then convert them to javafx.scene.image.Image. This approach
>> significantly increases the size of our application, adds considerable
>> performance overhead, does not support animated WebP, and even has a
>> color-shift bug when decoding lossy-compressed WebP images.
>>
>> Is there any possibility that JavaFX will add native support for modern
>> image formats like WebP and AVIF in the future? I noticed that the
>> javafx.web module already depends on libwebp during its build, yet this
>> dependency is not utilized for javafx.scene.image.Image decoding—which is
>> honestly a bit of a shame. We sincerely hope that JavaFX can provide native
>> support for these formats.
>>
>> Glavo
>>
>>
>>
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