Is this AVIF to WEBP converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple AVIF files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

Will the image quality change after conversion?

It depends on the formats involved. Converting to a lossless format like PNG preserves every pixel exactly. Converting to a lossy format like JPEG or WebP applies compression — we default to 85% quality, which looks identical to the original for almost all images. You won't notice a difference unless you zoom in pixel-by-pixel.

Do you support batch image conversion?

Yes — drop multiple images at once and they all convert in parallel. Free accounts handle up to 5 at a time; Pro is unlimited. Download everything as a single ZIP when you're done.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

AVIF to WebP Converter — Free, Online, No Upload

How to convert AVIF to WEBP online

1
Drop your AVIF file
Drag and drop your AV1 Image File Format file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs AV1 Image File Format → Web Picture Format entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your WEBP
Your Web Picture Format file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

AVIF vs WEBP: format overview

AVIF

AV1 Image File Format

Alliance for Open Media · 2019

Compression: lossy
Color depth: 12-bit
Transparency: Yes

✓ Smallest file size of any image format (50% smaller than WebP)
✓ Excellent HDR and wide-gamut color support
✗ Slow encoding (computationally expensive)

WEBP

Web Picture Format

Google (On2 Technologies acquisition) · 2010

Compression: hybrid
Color depth: 8-bit
Transparency: Yes

✓ 30% smaller than JPEG, 26% smaller than PNG
✓ Supports both lossy and lossless

AVIF magic bytes: 00 00 00 .. 66 74 79 70 61 76 69 66

WEBP magic bytes: 52 49 46 46 xx xx xx xx 57 45 42 50

Why convert AVIF to WEBP?

AVIF is one of the most efficient image formats available, but its encoder compatibility is still uneven in 2025. Certain image editing tools, older content management systems, and server-side image processing libraries do not yet support AVIF as an input format. If you are working with AVIF assets from a modern CDN or design pipeline and need to hand them off to a tool or platform that does not recognize them, conversion to WebP is the pragmatic solution.

WebP has near-universal support across all modern browsers, image editing applications, and web platforms. Photoshop supports WebP natively since version 23.2, GIMP has supported it for years, and tools like Squarespace, Wix, and Shopify all accept WebP image uploads. WordPress handles WebP natively from version 5.8 onward. Converting AVIF to WebP gives you a format with a larger support surface while still maintaining substantially better compression than JPEG.

The conversion from AVIF to WebP involves decoding the AVIF and re-encoding in WebP, which introduces a small amount of additional quality loss since both are lossy formats. In practice, the difference is imperceptible at WebP quality settings of 85 or above. The resulting WebP files will be larger than the AVIF originals, typically by 20 to 40 percent, but still significantly smaller than equivalent JPEGs. Transparency is preserved during conversion, since both formats support alpha channels.

Quality & file size: AVIF to WEBP

Typical file sizes: AVIF 0.8–2 MB → WEBP 1–3 MB.

Both AVIF and WEBP use lossy compression. We transcode at high quality settings (equivalent to WEBP's recommended web quality) to minimize generational loss.

Color depth: AVIF supports 12-bit, WEBP supports 8-bit.

Transparency: AVIF supports transparency. WEBP preserves transparency.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your AVIF files are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.