Convert WebP to AVIF
Already on WebP and want to go smaller? Convert to AVIF right in your browser. AVIF is the newer codec, and at matching quality it typically undercuts WebP by another 20% or so — with transparency and wide color kept intact, and nothing uploaded.
Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.
The next step down in size
WebP was a big jump over JPG and PNG; AVIF is the jump after that. Built on the AV1 codec, it holds detail and gradients at bitrates where WebP starts to blur, so the same photo at the same visual quality lands noticeably smaller. For image-heavy pages that already use WebP, re-encoding to AVIF is one of the easiest remaining ways to cut page weight and speed up loads.
Keeps what WebP kept
AVIF carries over the features you rely on in WebP — alpha transparency for logos and cut-outs, and support for wider color than 8-bit JPG — so switching does not cost you anything visible. The conversion runs entirely in your browser, so you can re-encode a whole asset folder to AVIF without uploading a single file or paying a per-image optimization fee.
Frequently asked questions
- Which formats are supported?
- You can convert to and from JPG, PNG, WebP, AVIF and BMP, and convert from HEIC/HEIF (iPhone photos). Browsers cannot create HEIC files, so HEIC is input-only. Output formats your browser cannot encode are detected and disabled automatically.
- Can I convert HEIC to JPG?
- Yes. Drop in a HEIC photo from an iPhone and choose JPG (or PNG/WebP). The HEIC file is decoded locally in your browser with a bundled decoder — it is never uploaded anywhere.
- Is transparency preserved?
- Yes, when converting to a format that supports an alpha channel (PNG, WebP, AVIF). For formats without transparency (JPG, BMP), you can pick a background color for transparent areas.
- Is my image uploaded?
- No. Conversion runs entirely in your browser — your images never touch a server.
- What is AVIF and should I use it?
- AVIF produces the smallest high-quality files. Encoding support varies by browser, so PixelVault enables it only when your browser can create AVIF files.
- Can I convert many images at once?
- Yes. Batch-convert a whole folder of images and export them together as a ZIP.