WebP to AVIF Converter
WebP already made your images lighter; AVIF can usually take photos further at the same visual quality. Convert a batch here, compare the sizes, and keep whichever version earns its place.
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
Upload the WebP images
Add up to 20 WebP files, 95 MB each, ideally the highest-quality copies you have rather than files already squeezed for the web.
- 2
Pick quality or lossless
Quality starts at 60, which on AVIF's scale is a good level for photos. Tick Lossless only for graphics that must stay pixel-exact.
- 3
Convert to AVIF
Press Convert to AVIF, download, and compare each result against its WebP before replacing anything on your site.
Convert WebP to AVIF when the image is a photo, the audience uses current browsers, and every kilobyte on the page counts. Keep WebP when the file is a small graphic or the platform cannot store AVIF.
When AVIF wins over WebP
WebP's lossy mode is built on the VP8 video codec from 2010, so it stores color at half resolution and only 8 bits per channel. AVIF, published by the Alliance for Open Media in 2019, takes its compression from the AV1 video codec. It keeps finer detail at low bitrates, can store full-resolution color, and supports 10- and 12-bit depth, which is why photographs with skies, skin and soft shadows usually come out smaller as AVIF at the same look.
That advantage shrinks for small images and sharp-edged graphics. An icon under a few kilobytes has little room to save, and lossless AVIF is weaker than lossless WebP for screenshots and diagrams. Run a batch, compare the numbers, and keep whichever is lighter. If the source started as a JPG, convert that original with JPG to AVIF instead of going through WebP, so the picture is only compressed once more.
AVIF vs WebP: what each format can store
| AVIF | WebP | JPG | |
|---|---|---|---|
| Lossy and lossless modes | yes | yes | Lossy only |
| Alpha transparency | yes | yes | no |
| Bit depth per channel | 8, 10, 12 | 8 | 8 |
| Full-resolution color in lossy mode | yes | no | yes |
| HDR (PQ and HLG) | yes | no | no |
| Shown by Safari | Safari 16 and later | Safari 14 and later | All versions |
| WordPress media library | 6.5 and later | 5.8 and later | All versions |
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
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
Site owners turn WebP into AVIF to squeeze already-optimized photos a step further and gain 10- and 12-bit HDR support, accepting that a few older browsers and CMS hosts will need the WebP kept as a fallback.
From WebP to AVIF: how the formats arrived
2010
WebP announced
Google releases WebP, a still-image format based on VP8 video coding.
2019
AVIF 1.0
The Alliance for Open Media publishes the AVIF specification on top of AV1.
2020
Chrome 85 and Safari 14
Chrome starts showing AVIF; Safari finally adds WebP.
2022
Safari 16
AVIF arrives on iPhone, iPad and Mac with iOS 16 and macOS Ventura.
2024
Edge 121 and WordPress 6.5
The last major browser and the largest CMS accept AVIF.
When to keep the WebP version
Convert to AVIF
- Hero photos and product shots
- HDR or wide-gamut pictures
- Pages where image weight dominates
- Sites with a picture-element fallback
Keep WebP
- Icons and small UI graphics
- Lossless screenshots and diagrams
- Animated images
- Hosts or apps that reject AVIF uploads
Encoding AVIF takes longer than WebP, which matters for a site that generates images on the fly but not for a one-time batch like this. Decoding is fast on current phones and laptops.
If some visitors still use browsers that cannot show AVIF, serve both with a picture element, AVIF first and WebP as the fallback, so nobody gets a broken image. When you need to go the other way for an editor or upload form that does not read AVIF, use AVIF to WebP. The guide to AVIF, HEIC and WebP explains how the three modern formats differ in more depth.
WebP to AVIF: frequently asked
Is converting WebP to AVIF worth it for every image?
No. Photos and large hero images gain the most, often a noticeably smaller file at the same look. Small icons, screenshots and flat graphics may come out barely smaller or even larger, so check each result and keep the lighter file.
Why does quality 60 look as good as WebP at 80?
The two quality scales are not comparable. AVIF's encoder reaches the same visual result at a lower number, so 50–65 is a normal range for photos. Judge by eye and by file size, not by matching numbers between formats.
Does re-encoding a lossy WebP make it worse?
Every lossy pass loses a little detail, and AVIF tends to smooth fine texture rather than add blocks. Start from the original JPG or PNG when you still have it; convert the WebP only when it is the best copy you own.
Should I tick Lossless when going from WebP to AVIF?
Only when the WebP itself is lossless and must stay pixel-exact, such as a UI graphic. Lossless AVIF is frequently larger than lossless WebP, so for those files staying on WebP is often the better answer.
Can WordPress serve the AVIF files I make here?
WordPress accepts AVIF uploads from version 6.5, released in April 2024, provided the server's image library supports AVIF. Older installs or hosts without that support reject the upload, in which case keep the WebP.
What happens to transparency in a WebP logo?
AVIF has a full alpha channel, so transparent areas stay transparent. Edges keep their soft anti-aliasing because the alpha is stored separately from the colors.
- JPG to AVIF ConverterConvert JPG photos to AVIF for faster web pages. Quality starts at 60, color profile kept, 20 files per batch, no account. Files deleted after 30 minutes.
- PNG to AVIF ConverterConvert PNG to AVIF, the AV1-based image format: transparency kept, lossy or lossless, shown by Chrome, Firefox, Safari and Edge. Batch 20 files.
- AVIF to WebP ConverterConvert AVIF to WebP when a browser, plugin or host cannot handle AVIF yet. Transparency kept, lossy or lossless output, 20 images per batch.
- Convert JPG to WebPConvert JPG to WebP for faster pages: roughly a quarter to a third fewer bytes at the same look. Batch 20 photos, pick the quality, no account needed.
- PNG to WebP ConverterConvert PNG to WebP free and keep the alpha channel. Lossy at quality 80 or lossless, 20 files per batch, deleted from our servers after 30 minutes.
- Image to WebP ConverterConvert JPG, PNG, GIF, HEIC, TIFF, SVG and raw photos to WebP in one batch. Quality 80 by default, transparency and animation kept, no account.