WebP to AVIF Converter: Free, Private, No Upload

Convert WebP files to AVIF in your browser. Smaller output file, batch up to 20 files at once, no upload, no account, no watermark. Your files never leave your device.

WebP to AVIF
Batch up to 20 files
No upload, no account
Metadata stripped

1Add up to 20 images
2Pick from 18 formats
3Download or copy the code

Processed on your device. Your images are never uploaded, and metadata is stripped. How we keep it private

How do I convert WebP to AVIF for free?

Drop your WebP files into the tool above, choose AVIF as output, and download the result. Everything runs in your browser, so nothing is uploaded and there is no limit or watermark. It works on Windows, Mac, Linux, ChromeOS, iOS and Android — anywhere you have a modern browser.

Price: Free, no credits and no daily cap
Account required: No
File uploaded to server: No, processed locally in your browser
Batch limit: Up to 20 files at once
Input format: WebP
Output format: AVIF
Best for: AVIF workflows, smaller files, faster sharing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Adjustable 1-100, defaults to 90

How to convert WebP to AVIF

1
Drop your WebP files
Drag up to 20 WebP files onto the page or click to choose them. Everything runs in your browser.
2
AVIF is preselected
Output is already set to AVIF. Adjust quality, resize or batch if you want.
3
Download
Save each AVIF, or download all of them together as a ZIP.

WebP to AVIF: what changes and when it makes sense

WebP is a WebP format, developed by Google. It is best known for smaller files than JPG and PNG at similar quality, with transparency and animation in one format. The main drawbacks are rejection by some upload forms, older editors and email clients, and no wide-gamut or HDR support.

AVIF is an AV1 Image File Format. It is best known for the smallest files of any common web format at a given quality. The main drawbacks are slow encoding, patchy support outside browsers, and smoothing in fine textures at aggressive settings.

WebP vs AVIF at a glance

Property	WebP	AVIF
Type	Raster image	Raster image
Compression	Lossy (VP8) or lossless, chosen per file	Lossy or lossless, based on the AV1 video codec
Transparency	Full alpha channel with soft edges	Full alpha channel with soft edges
Animation	Yes	Yes
Colour depth	8 bits per channel	8, 10 or 12 bits per channel, with HDR and wide-gamut support
Support	Supported by current Chrome, Edge, Firefox, Safari and Opera, but not by every older editor, office suite or upload form	Supported by current Chrome, Edge, Firefox and Safari, but many editors, social platforms and OS viewers cannot open it
History	Announced by Google in September 2010, based on the VP8 codec acquired with On2 Technologies. First format to combine lossy, lossless, alpha and animation in one specification. Safari support arrived in 2020 with macOS 11.	Finalised in 2019 by the Alliance for Open Media (Google, Mozilla, Apple, Microsoft, Netflix, Amazon, Intel and others). Based on AV1 video codec, successor to VP9 and HEVC. First major browser support: Chrome 85 (2020).

What actually changes in this conversion

WebP can be lossy or lossless. A lossy source picks up a second round of compression when saved as AVIF.
Transparency is preserved, including soft edges.
Expect the AVIF file to be somewhat smaller than the WebP source.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About WebP: history and technical details

Announced by Google in September 2010, based on the VP8 codec acquired with On2 Technologies. First format to combine lossy, lossless, alpha and animation in one specification. Safari support arrived in 2020 with macOS 11.

Technical: Lossy WebP uses VP8 intra-frame coding with 4x4 and 16x16 block prediction. Lossless WebP uses a new algorithm with colour cache and LZ77 backward references. Max dimensions 16,383 by 16,383.

Real-world size: Lossy WebP at quality 80 is typically 25-35% smaller than JPG at quality 85 for photographs. Lossless WebP is 20-30% smaller than PNG for graphics. Google reports 80% savings on some assets after switching to WebP.

Popular tools: Google Chrome (built-in encoder), cwebp, Squoosh, ImageMagick, Adobe Photoshop 2020+, Figma, WordPress (via plugin).

Alternatives: AVIF (30-50% smaller but slower to encode), JPG (universally accepted), PNG (lossless), HEIC (Apple ecosystem).

About AVIF: what you get

Finalised in 2019 by the Alliance for Open Media (Google, Mozilla, Apple, Microsoft, Netflix, Amazon, Intel and others). Based on AV1 video codec, successor to VP9 and HEVC. First major browser support: Chrome 85 (2020).

Technical: AV1 intra-frame coding with variable block sizes from 4x4 to 128x128. Supports 8/10/12-bit colour, HDR, wide gamut (BT.2020), monochrome. HEIF-based container. Encoding is 10-100x slower than JPEG.

Real-world size: AVIF at quality 50 produces files 30-50% smaller than JPG at quality 85 with similar visual quality. Netflix reports 50% bandwidth savings after switching. Google reports AVIF is 20-30% smaller than WebP.

Popular tools: Adobe Photoshop 2024+, GIMP 2.10+, Squoosh, avifenc, ImageMagick, AVIF.io, Netflix (production use).

Alternatives: WebP (faster encode, less compression), JPG (universal), HEIC (Apple-only), JPEG XL (future format).

Browser and software compatibility

WebP: Supported by current Chrome, Edge, Firefox, Safari and Opera, but not by every older editor, office suite or upload form. AVIF: Supported by current Chrome, Edge, Firefox and Safari, but many editors, social platforms and OS viewers cannot open it.

AVIF is well supported by current browsers but is still rejected by many editors and social platforms.

Why people move away from WebP

Some CMS uploaders, marketplaces, print shops and older editors do not accept WebP.
Saving an image from a website often leaves you with a WebP that Office documents and older viewers will not open.
WebP has no HDR or wide-gamut support, so AVIF is the better choice for those images.

Why people choose AVIF

AVIF often produces files 30 to 50 percent smaller than JPG at comparable quality.
It can carry 10-bit and HDR content that JPG and WebP cannot.
It pays off most on hero images and large photo galleries, where bytes matter the most.

Common mistakes with WebP

Re-converting a WebP that was already made from JPG — stacks two rounds of lossy compression
Serving WebP without a JPG fallback for very old Safari (pre-2020)
Expecting WebP to open in older Office versions — it will not

Best practices for keeping quality

If your WebP was originally made from a JPG or PNG, convert from the original instead. Going from lossy WebP to another lossy format stacks two rounds of compression.
AVIF quality numbers do not line up with JPG. Start around 60-70 and compare against the original at 100 percent zoom.
Serve AVIF with a WebP or JPG fallback using the picture element so older browsers still get an image.
Resize before converting if the image will be shown small. A 4000 pixel photo displayed at 800 pixels wastes bytes in any format.
Check the result at 100 percent zoom, especially around text, edges and gradients, before you replace any originals.
Keep your original files. Conversions to a lossy format cannot be undone.
When you convert a set of images, use the same quality setting for the whole batch. The converter handles up to 20 files at once.

WebP to AVIF questions

Quick answers about privacy, quality, supported formats, file limits and how AVIF works.

Why convert WebP to AVIF?

AVIF files are typically smaller than WebP, which makes them faster to share, send and load. The trade-off is a small amount of image detail at low quality settings.

Will converting WebP to AVIF lose quality?

At 90% quality, most people cannot tell the difference. Use 85-95% for photos and you are fine.

Does AVIF keep transparency?

Yes. AVIF supports full transparency, so transparent areas in your original are kept.

Are my files uploaded?

Never. Everything runs in your browser. Your files never leave your device. Open DevTools Network tab while processing — you will see no upload request.

Can I convert many files at once?

Yes, up to 20 files at once. Download them individually or all together as a ZIP.

Does the converter strip metadata?

Yes. Browsers do not pass EXIF data through a canvas, so GPS, camera model and dates are removed on every conversion. That is good for privacy.

Is it free?

Yes. No credits, no daily cap, no account, no watermark. The practical limit is your device memory.

Is AVIF smaller than WebP?

Yes, typically 20-30% smaller at similar quality. But AVIF is much slower to encode and has less software support outside browsers.

Does AVIF support HDR?

Yes. AVIF supports 10-bit and 12-bit colour, HDR (Hybrid Log-Gamma and PQ), and wide-gamut BT.2020 colour. JPG and WebP cannot do this.

Can AVIF be animated?

Yes, though animated AVIF support is still limited in browsers. Chrome and Firefox support it, Safari does not as of early 2026.

Your files never leave your device

No upload, no account, no tracking. Everything happens in your browser using the Canvas API and WebAssembly. You can confirm this in your browser's DevTools Network tab while the tool runs — no request carries your file. See why ToolDeck is different.