Free online GIF to AVIF converter

A website, image pipeline, or editing application may require AVIF instead of GIF, and AVIF can reduce the size of photographic or gradient-heavy images. Converting also provides a modern format for sharing or archiving, but animated files must be tested because AVIF support is less consistent than GIF support.

What the GIF format is

GIF is a palette-based raster format with a maximum of 256 colors per frame. Its pixel data is compressed without loss, but the limited palette can introduce banding or dithering during export. GIF supports one transparent palette entry, not partial alpha transparency, and can store multiple frames with timing and disposal information.

Websites, messaging platforms, screen-capture tools, animation applications, GIMP, and Photoshop commonly create or use GIF files. They are used for short animations, memes, interface graphics, and simple illustrations where broad compatibility matters.

What the AVIF format is

AVIF is an image format based on the AV1 codec and stored in an ISO Base Media File Format container. It supports still images and animations, lossy or lossless compression, alpha transparency, higher color depths such as 10-bit, wide-gamut color, and HDR metadata.

AVIF often produces a smaller file than GIF at comparable visual quality, particularly for photographs, gradients, and detailed frames. It may provide little or no size advantage for a very small, flat-color graphic. AVIF can preserve animation, but still-image support is more widespread than animated-AVIF support.

How to convert a GIF to AVIF

For a single still image:

1. Open the GIF in a converter that supports AVIF.
2. If the GIF is animated, select the required frame rather than converting the entire frame sequence.
3. Choose AVIF as the output format and set a quality value. Start around 50–70 on tools using a 0–100 quality scale, then compare the result with the source.
4. Export the file and check its dimensions, transparency, colors, and file size in the target application.

You can perform this conversion for free on 101convert.com without installing software: upload the GIF, select AVIF, start the conversion, and download the result. For an animated GIF, verify that the output contains all frames and retains their timing before deleting the original.

Using ImageMagick for a still frame: install a build with AVIF support, then run:

magick input.gif[0] -colorspace sRGB -quality 60 output.avif

The [0] selector exports only the first frame. Replace it with another frame index when needed. ImageMagick’s AVIF quality scale and available lossless options depend on its HEIF/AVIF delegate, so check the installed build with magick identify -list format and test the output rather than assuming identical settings across systems.

For an animated GIF with FFmpeg: use an FFmpeg build that includes the libaom-av1 encoder and an AVIF muxer capable of image sequences:

ffmpeg -i input.gif -c:v libaom-av1 -crf 30 -b:v 0 -cpu-used 6 output.avif

Lower -crf values preserve more detail and create larger files; -cpu-used 6 favors speed over compression efficiency. Animated AVIF output depends on the FFmpeg build and muxer, and some builds produce only a still image or reject the sequence. Inspect the output in an AVIF-capable browser or viewer and confirm frame count and timing.

Quality and compatibility limits

• Conversion cannot restore colors lost when the source GIF was reduced to 256 colors. It can preserve the existing pixels more efficiently, but it cannot recreate the original full-color artwork.
• GIF transparency is binary. AVIF supports an alpha channel, but a converted GIF normally contains only fully transparent and fully opaque pixels unless the conversion process deliberately creates intermediate alpha values.
• Lossy AVIF encoding can produce ringing or blur around text and sharp edges. Increase quality or use lossless AVIF when those details matter.
• Animated AVIF support varies among browsers, operating systems, editors, and messaging platforms. Keep the original GIF when broad compatibility or simple frame-by-frame editing is required.
• Test the output in the exact destination software. If AVIF is not guaranteed, provide a PNG or GIF fallback for still or animated content as appropriate.