Multiconversor

Convert PNG to AVIF

Free, no account, no watermark. Your PNG files are turned into AVIF inside this browser tab — they are never uploaded to a server.

  • Nothing leaves your device
  • No account, no email
  • Free, and no watermark

Drop your files here

Tap to pick your photos

or

Choose files

Up to 30 files at a time · 60 MB per file

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Why convert PNG to AVIF?

Best for large graphics that need transparency on a modern site. AVIF holds the alpha channel intact and still comes in dramatically lighter than PNG.

AVIF is the pick when bandwidth matters most and your audience is on current browsers. A hero image can often be cut to a third of its JPEG size with no visible difference.

How to convert PNG to AVIF

  1. Drop your PNG files into the box above, or click to pick them from your device.
  2. Adjust the quality slider if you want a smaller file or a sharper result.
  3. Hit convert. The work happens inside your browser, so it takes a second or two per image.
  4. Download each AVIF file, or grab them all in one ZIP.

About the formats

PNG — Portable Network Graphics

PNG is lossless: what goes in comes back out pixel for pixel, no matter how many times you re-save it. Add a full alpha channel and you have the natural home for logos, screenshots, diagrams and anything with hard edges or text. The cost is weight — a photograph stored as PNG can be five times heavier than the same photo as JPG.

Strengths

  • Lossless — no compression artefacts, at any number of re-saves
  • Full alpha transparency, including soft anti-aliased edges
  • Universal support, and the default for screenshots and interface assets

Limitations

  • Far heavier than JPG or WebP for photographic content
  • No quality dial — you take the file size you are given
  • Slower to decode at very large dimensions

AVIF — AV1 Image File Format

AVIF is the newest format here, built on the AV1 video codec. It beats WebP by another 20–30% on size, handles HDR and wide colour gamut, and supports transparency and animation. Encoding is slow and desktop support is still patchy, but for images delivered over the web it is the most efficient option browsers actually understand.

Strengths

  • The smallest files of any format with real browser support
  • HDR and 10-bit colour, so gradients do not band
  • Transparency and animation included

Limitations

  • Slow to encode compared with JPEG or WebP
  • Older browsers and most desktop applications cannot open it
  • Editing software support remains thin
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Frequently asked questions

Are my photos uploaded anywhere?

No. The conversion runs entirely in your browser using WebAssembly and the Canvas API. Your images are never sent over the network, never touch a server, and are dropped from memory as soon as you close the tab.

Will I lose quality?

AVIF is a lossy format, so some data is discarded. At the default quality of 85% the difference is invisible on screen for most photos. Raise the slider if you plan to print or edit the result.

Is there a limit or a cost?

It is free and there is no account. The only limits are practical: 30 files at a time and 60 MB per file, so that the tab does not run out of memory on a phone.

Can I convert several files at once?

Yes — drop in up to 30 files and they are processed one after another, then downloaded individually or as a single ZIP.

Does it work offline?

Once the page has loaded, yes. The converter itself needs no network connection, so you can drop the connection and keep converting.

Does it work on a phone?

Yes, on iOS and Android. Large batches are slower on a phone because the decoding happens on the device, so stick to smaller groups if things feel sluggish.

Other conversions

Same tool, different formats.