AVIF to WebP Converter
AVIF is the newer and usually smaller web format, but WebP still reaches more devices and more content systems. Convert AVIF to WebP when a site has to work on older iPhones and Macs or a CMS refuses the upload, and keep the modern compression and transparency.
Image Converter
or drop JPG, JPEG, JPE … files here ·
Max 95 MB per file· Up to 20 files· Deleted after 30 minutes
Files are processed on our servers and deleted after 30 minutes.
85 keeps photos visually identical to the original. Lower it only when you need a smaller file.
JPG, BMP and EPS have no transparency. Transparent pixels are filled with this color.
Hex color used behind transparent pixels, e.g. #FFFFFF.
This format holds a single image. Choose GIF or WebP output if you want to keep the animation.
A multi-size icon contains several resolutions in one file; browsers and operating systems pick the one they need.
Keep the original dimensions, or enter one side and the aspect ratio is kept.
Pixels for the side you chose above.
Percentage of the original dimensions.
sRGB is right for screens and the web. Keep the original for print workflows; grayscale discards color.
Metadata only, 0 keeps the original value. Printers and some portals read this number; it does not change pixel dimensions.
How to use this tool
- 1
Add the AVIF images
Upload up to 20 .avif files, 95 MB each, from a design export, an image CDN download or a site backup.
- 2
Choose lossy or lossless
Quality starts at 85, which suits photos that were already lossy AVIF. Tick Lossless under Advanced settings only for flat graphics or for AVIF files that were saved lossless.
- 3
Press Convert to WebP
Download each WebP or one ZIP. Transparent areas remain transparent, and files are deleted after 30 minutes.
Short answer: convert AVIF to WebP at quality 85 when a browser, plugin or host does not support AVIF. You lose a little size efficiency, keep transparency, and gain a file that loads on nearly every device in use.
Why convert AVIF to WebP in 2026
AVIF was published by the Alliance for Open Media in 2019 and uses the AV1 video codec for still images. It usually beats WebP on size at the same visual quality, especially for photos with smooth gradients. Support, though, arrived in stages: Chrome 85 in 2020, Firefox 93 in 2021, Safari only from version 16 in 2022 with gaps until 16.4, and Edge as late as version 121 in January 2024.
WebP, released by Google in 2010, has been displayed by every major browser since Safari 14 in 2020. Phones stuck on iOS 15, such as the iPhone 7 and 6s, show WebP but not AVIF. If an AVIF breaks somewhere you cannot upgrade, WebP is the closest step down. Read more on the trade-offs in AVIF, HEIC and WebP explained.
AVIF vs WebP support in browsers and WordPress
| from ↓ · to → | AVIF | WebP |
|---|---|---|
| Chrome 85+ | Chrome 85+ to AVIF: yes | Chrome 85+ to WebP: yes |
| Firefox 93+ | Firefox 93+ to AVIF: yes | Firefox 93+ to WebP: yes |
| Safari 16.4+ | Safari 16.4+ to AVIF: yes | Safari 16.4+ to WebP: yes |
| Safari 14–16.3 | – Safari 14–16.3 to AVIF: no | Safari 14–16.3 to WebP: yes |
| Edge 121+ | Edge 121+ to AVIF: yes | Edge 121+ to WebP: yes |
| Edge 18–120 | – Edge 18–120 to AVIF: no | Edge 18–120 to WebP: yes |
| WordPress 5.8–6.4 | – WordPress 5.8–6.4 to AVIF: no | WordPress 5.8–6.4 to WebP: yes |
| WordPress 6.5+ | WordPress 6.5+ to AVIF: yes | WordPress 6.5+ to WebP: yes |
AVIF
AV1 Image File Format
AVIF stores still images and image sequences compressed with the AV1 video codec, and was finalised by the Alliance for Open Media in 2019. It usually produces smaller files than both JPEG and WebP at the same visual quality and supports transparency, animation, wide colour gamut and HDR. Encoding is slower than older formats, and very fine textures can look smoothed at low quality settings. All major browsers now display AVIF, but many desktop apps, social platforms and older devices cannot open it.
- Compression
- Lossy or lossless
- Transparency
- Yes
- Animation
- Yes
- Introduced
- 2019 · Alliance for Open Media
WEBP
WebP image
WebP is an image format released by Google in 2010 to make web pages load faster. It supports both lossy and lossless compression, alpha transparency and animation in a single format. Lossy WebP files are typically 25–35% smaller than JPEGs of similar visual quality, and lossless WebP is usually smaller than PNG. Every current browser supports it, but some older desktop software, print services and upload forms still reject it. Windows, macOS and most modern image editors can open WebP files.
- Compression
- Lossy or lossless
- Transparency
- Yes
- Animation
- Yes
- Introduced
- 2010 · Google
People convert AVIF to WebP to keep modern compression and transparency while reaching browsers, phones and CMS hosts that still cannot handle AVIF; WebP to AVIF is the opposite move, squeezing out more bytes once every visitor can decode it.
What changes when you switch AVIF to WebP
What WebP gives you
- Displays on older Safari, Edge and iOS 15 devices
- Accepted by WordPress since 5.8 on almost any host
- Keeps the alpha channel
- Faster to encode and decode on low-end phones
What you give up
- Files usually somewhat larger than AVIF
- 8-bit only, so HDR and 10-bit AVIF are flattened
- A second lossy encode for lossy sources
Convert AVIF to WebP: quality and lossless settings
Match the setting to how the AVIF was made. Most AVIF files on the web are lossy photos, so lossy WebP at 85 keeps them visually intact while staying light. Graphics with flat color, text or sharp edges are where Lossless shines, because WebP's lossless mode was designed for exactly that kind of image.
HDR and 10-bit AVIF files are tone-mapped to 8-bit, since WebP has no higher bit depth. Leave Color space on sRGB for web delivery. If you are building a fallback set for a <picture> element, keep the original AVIF next to the WebP, and when a page needs neither format, AVIF to PNG keeps everything lossless.
AVIF to WebP questions
Why convert AVIF to WebP if AVIF is smaller?
Because a smaller file is no use if it does not display. Safari before version 16.4, iPhones that cannot update past iOS 15, Edge before version 121 and many WordPress hosts either skip AVIF or handle it only partly. WebP works on all of them and is still far lighter than JPG or PNG.
Does AVIF to WebP lose quality?
A lossy AVIF re-encoded as lossy WebP goes through a second round of compression, so a little detail is lost. At quality 85 the difference is hard to see on photos. Converting lossy AVIF to lossless WebP does not bring detail back; it only makes the file much bigger.
When should I tick Lossless for AVIF to WebP?
When the AVIF itself is lossless, or when it is a flat graphic such as a logo, chart or UI screenshot. Lossless WebP stores those exactly and compactly. For photographs, lossy WebP at 80 to 90 is the right setting.
Will a transparent AVIF stay transparent as WebP?
Yes. Both formats carry a full alpha channel, so product cut-outs and logos keep their transparent background without a fill color.
Why does WordPress reject my AVIF upload?
WordPress added AVIF support in version 6.5 in 2024, but only when the server's image library can process it. On older WordPress versions or hosts whose GD or Imagick build lacks AVIF, the upload fails. WebP has been accepted since version 5.8 and is handled by almost every host.
Should I serve AVIF and WebP together?
If you control the HTML, yes: list the AVIF first and the WebP second inside a <picture> element, and each browser picks the first format it supports. Converting gives you that WebP fallback. For apps that need neither, use AVIF to JPG.
| PNG to WebP | JPG to WebP | GIF to WebP |
| SVG to WebP | HEIC to WebP | Image to WebP |