HexaConverter
svgavif

Convert SVG to AVIF

Free online converter for SVG files. Next-generation format with the best compression ratio. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

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Upload a SVG file to convert it to AVIF. Up to 3 files at once, 100 MB each.

Free · up to 3 files · 100 MB each · files deleted automatically after 1 hour.

About SVG and AVIF

SVG .svg

Not pixels at all — an XML text file describing shapes, paths and text. A renderer draws it fresh at whatever size is asked for, so it is sharp at every scale.

Good for

  • Resolution independent — identical on a watch and a billboard
  • Tiny for logos, icons and diagrams
  • Editable as text, and styleable with CSS

Trade-offs

  • Cannot represent a photograph in any useful way
  • Complex artwork can render slowly
  • Converting a photo *to* SVG does not vectorise it

image/svg+xml

AVIF .avif

A modern image format derived from the AV1 video codec. It compresses harder than JPEG or WebP at the same visual quality, and handles wide colour and high dynamic range.

Good for

  • The smallest files of any format here at a given quality
  • Transparency, animation, wide colour gamut and HDR
  • Holds up better than JPEG at very low bitrates

Trade-offs

  • Support is newest — older browsers and many desktop apps cannot open it
  • Encoding is slow compared with JPEG
  • Fine detail can smooth over at aggressive settings

image/avif

SVG and AVIF side by side

SVG compared with AVIF
SVGAVIF
CompressionVector — text, not pixelsLossy or lossless
TransparencyYesYes
AnimationYes — via CSS or SMILYes
Typically used forLogos, icons, diagrams, illustrationsModern web delivery, bandwidth-sensitive images

What changes when you convert SVG to AVIF

Scalability is lost here

SVG describes shapes, so it is sharp at any size. AVIF is a fixed grid of pixels. Once converted, enlarging the result will blur it — so choose the output size before converting, not after, and pick the largest size you will ever need.

You choose how much to keep

AVIF can compress either lossily or losslessly, so the quality setting decides the outcome rather than the format. High quality stays close to the SVG you started with; lower settings trade visible detail for a much smaller file.

Encoding takes longer

AVIF comes from the AV1 video codec, and that compression is slow — noticeably slower than writing a JPEG or a PNG. The payoff is the smallest file of any format here at a comparable quality. Check your audience first: browsers handle AVIF well now, but plenty of desktop and print software still will not open it.

How the AVIF is written

Our default is quality 60 — the scale is not comparable with JPEG's, and 60 here is a visually higher setting than the number suggests. The quality control on the converter moves this if you need to — the default aims to be indistinguishable from the source at a sensible file size, rather than to win a compression benchmark.

Colour detail is stored at half resolution

AVIF keeps full brightness detail but records colour at half resolution in each direction, because the eye is far more sensitive to the first than the second. On photographs it is invisible. On saturated edges it is not: red text on white, thin coloured lines and flat graphic shapes can pick up fringing. If the SVG is a screenshot, a logo or anything with text in it, a lossless format will treat it far better.

Something has to choose the size

An SVG has no pixel dimensions of its own — it is a description of shapes that can be drawn at any scale. Rendering it to AVIF means picking one. We use the size declared in the file, and fall back to 1024 pixels wide when it declares none. Set the width explicitly if the result is destined for print or a high-density screen.

Fonts and linked files are not fetched

An SVG that names a font it does not embed relies on the renderer having that font, and an SVG that links to an external image relies on that link resolving. Neither is fetched from the network during conversion — for safety, since it would mean a converted file could make requests on your behalf. If the artwork depends on either, convert the text to outlines and embed the images before uploading.

SVG to AVIF questions