AVIF Converter | Convert images to AVIF and back again

Convert JPG, PNG, WebP, GIF, BMP, TIFF and HEIC images to AVIF, typically 30 to 50 percent smaller than JPEG at the same quality, or turn an AVIF back into a JPG, PNG or WebP. Choose your own quality and see exactly how much space you saved.


Which way?
Convert to AVIF Convert from AVIF
An AVIF file, up to 20 MB.
Smaller file Better quality
Lower means a smaller file. Around 50 is usually indistinguishable from the original.
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Conversion happens on our server, so this works with JavaScript turned off.

What AVIF is

AVIF is an image format built on the AV1 video codec, released in 2019 by the Alliance for Open Media. It exists to do one thing well: make images much smaller at the same visual quality. In practice an AVIF is usually 30 to 50 percent smaller than an equivalent JPEG and noticeably smaller than WebP, while also supporting transparency, animation, wide colour gamut and high dynamic range. It is royalty free, which is why browsers adopted it quickly.

AVIF, WebP or JPEG

JPEG is universal and understood by absolutely everything, which is still its main advantage. WebP is a safe middle ground, roughly 25 to 30 percent smaller than JPEG and supported everywhere that matters. AVIF compresses hardest and handles gradients and flat colour especially well, where JPEG tends to band and blotch. The trade-off is encoding time, since AVIF is slower to produce, and slightly older devices that may not decode it.

Browser support

AVIF works in current versions of Chrome, Edge, Firefox, Safari and Opera, on desktop and mobile. Support arrived in Chrome in 2020, Firefox in 2021 and Safari in 2022, so the practical question is how old your visitors devices are rather than which browser they use. If you need to cover everything, serve AVIF inside a picture element with a JPEG or WebP fallback, and browsers that understand AVIF will take it while the rest quietly use the fallback.

Choosing a quality setting

AVIF holds up at lower numbers than you would expect from JPEG experience. Around 50 is generally indistinguishable from the source for photographs, and 60 to 70 is comfortable if the image will be examined closely or contains text. Going above 85 mostly adds file size without visible benefit. If your source is already a compressed JPEG, remember that you are re-encoding something lossy, so aim for a smaller file rather than trying to recover detail that has already gone.

Worth knowing

  • Converting an already compressed JPEG to AVIF still saves space, but start from the original if you have it.
  • AVIF supports transparency, so a PNG with an alpha channel converts without losing it.
  • For photographs AVIF wins clearly. For small flat graphics and icons, an optimised PNG or SVG can still be smaller.
  • Serve AVIF through a picture element with a fallback if you support older devices.
  • Your upload and the converted file are removed from our server automatically within 12 hours.

Frequently asked questions

Leave the direction on convert to AVIF, choose your JPG, pick a quality and press convert. The file is processed on our server and the result appears with a download link and a comparison of the two file sizes. Nothing is installed and the image never leaves our machine after conversion.

Current browsers open AVIF directly, so dragging one into a browser tab usually works. Older photo software may not recognise it, which is where this tool helps: switch the direction to convert from AVIF and turn it into a JPG or PNG that anything can open.

For compression, generally yes. AVIF typically produces files around 20 percent smaller than WebP at comparable quality, and handles gradients and flat colour better. WebP encodes faster and has slightly broader support on old devices. If file size is the priority, use AVIF; if you need maximum compatibility with minimal fuss, WebP is the safer pick.

Yes. AVIF carries a full alpha channel, so a PNG with a transparent background keeps that transparency through the conversion, usually at a fraction of the file size. It also supports animation, wide colour gamut and high dynamic range, which is more than either JPEG or GIF can manage.

AVIF is a lossy format at the settings most people use, so some information is discarded, but it discards it far more cleverly than JPEG. At quality 50 most photographs are visually identical to the original. If you need a truly lossless result, keep the original file as well, because you cannot recover detail once it has been re-encoded.

Start at 50 for photographs, which is usually indistinguishable from the source. Raise it to 65 or 70 for images containing text or fine detail, or images that will be zoomed into. Above 85 the file grows quickly with little visible gain. It costs nothing to convert the same file twice and compare.

Chrome, Edge, Firefox, Safari and Opera all support it in current versions, on both desktop and mobile. Chrome added it in 2020, Firefox in 2021 and Safari in 2022. For visitors on much older devices, serve AVIF inside a picture element alongside a JPEG so their browser can fall back automatically.

No. Files are written to a temporary folder purely so the conversion and the download can happen, and that folder is cleared automatically within 12 hours. Images are not inspected, copied or used for anything else, and no account or email is required.

How do you convert an image to AVIF?

Upload a JPG, PNG, WebP, GIF, BMP, TIFF or HEIC, choose a quality and convert. AVIF files are typically 30 to 50 percent smaller than JPEG at the same visual quality, with transparency supported. This tool also converts AVIF back to JPG, PNG or WebP if you need to open one in older software.