AVIF Image Converter – Convert AVIF to PNG, JPG, WebP & ICO
About the AVIF Image Converter
AVIF is the most efficient image format in common use, which is exactly why people need to convert it. Browsers handle it well, but photo editors, print workflows, older operating systems, marketplace uploaders, and plenty of desktop software still reject the file outright. This AVIF Image Converter takes an .avif file up to 10MB and re-encodes it as PNG, JPG, WebP, GIF, ICO, or TIFF, entirely inside your browser.
Set expectations on file size before you start: converting away from AVIF almost always makes the file bigger, often several times over. AVIF is built on the AV1 video codec and routinely produces files half the size of an equivalent JPG. The size change figure will usually show a positive number in red, and that is normal rather than a fault — you are trading compression efficiency for compatibility.
PNG is the default output and the safest choice, because it is lossless and preserves the alpha channel. Converting AVIF to JPG or WebP means recompressing an already-compressed image, which stacks one round of loss on top of another; PNG avoids that entirely. Choose JPG only when the destination genuinely requires it, WebP when you need broader support than AVIF while keeping files small, and ICO, GIF, or TIFF for favicons, legacy embedding, and print.
AVIF supports transparency, and PNG, WebP, ICO, and TIFF all carry it through. JPG and GIF cannot, so the converter fills the canvas white before drawing — transparent regions come out white rather than black.
Two properties of AVIF do not survive conversion, and both are flagged above the tool. Animated AVIFs yield only their first frame, since none of the output formats here store animation from a single canvas read. HDR and 10-bit or 12-bit AVIFs are tone-mapped down to standard 8-bit sRGB by your browser during decoding, which can make a wide-gamut image look flatter than the original.
The quality slider appears only for JPG and WebP, the two lossy outputs, and stays hidden for PNG, GIF, ICO, and TIFF. Resizing runs in the same pass, by percentage or exact pixels with an aspect ratio lock. Because the converted file will typically be larger than what you started with, the File Size Calculator is useful for checking whether the result still fits within an upload limit or page weight budget.
Verification for this tool was handled by the BigToolSite Team, who converted transparent AVIF graphics, photographic exports, and animated AVIFs across every output format and confirmed the reported size changes match the downloaded files.
How to Use the AVIF Image Converter
- Drop an .avif file onto the upload panel or click to browse. Files up to 10MB are accepted; anything else returns a specific message.
- Wait for the decode step. A short progress indicator appears while your browser decodes the AVIF, which takes longer than other formats because AV1 decoding is computationally heavier.
- Check the file card — thumbnail, filename, file size, and pixel dimensions, shown on a checkerboard so transparency is visible.
- Pick an Output Format. PNG is preselected and is the right default; switching to JPG or WebP recompresses an already-lossy image.
- Adjust Quality for JPG or WebP. The slider runs 1 to 100 and starts at 85; it does not appear for the lossless formats.
- Choose a Resize mode: Original Size, 25%, 50%, 200%, or Custom Size. Custom opens width and height fields with Maintain aspect ratio ticked.
- For ICO output, select an ICO Size from 16 to 256 pixels, which replaces the resize options since icons must be square.
- Click Convert & Download. The file saves automatically with a -converted suffix, and the comparison preview and four statistics appear below.
Example Usage
Input: hero.avif, 1920×1080, 95 KB. Format PNG, Resize Original Size.
Output: hero-converted.png at roughly 2.4 MB — a size change well over +2000%, shown in red. The image is pixel-identical to what AVIF decoded, but PNG needs vastly more space to store it losslessly. This is the conversion to use when you need to open the image in software that cannot read AVIF.
Input: icon.avif, 512×512 with transparency. Format PNG.
Output: icon-converted.png with the alpha channel intact. No quality slider appears, because PNG stores every pixel exactly. For graphics and logos this is always the right target.
Input: photo.avif, 2400×1600. Format JPG, Quality 88, Resize 50%.
Output: photo-converted.jpg at 1200×800. Note that you are compressing an already-compressed image, so keep the quality setting high — dropping to 60 or 70 here compounds artifacts from both encoders and shows up faster than it would on an original photograph.
Input: mark.avif, 800×800. Format ICO, ICO Size 32×32.
Output: mark-converted.ico with transparency preserved, ready to place at your site root as a favicon.
WebP sits between AVIF and JPG on both compression and compatibility, and often makes a better intermediate target. The WebP Image Converter covers conversions from that starting point.
Once your AVIF is a PNG, every other conversion becomes straightforward from that lossless master. The PNG Image Converter handles those follow-on steps.
Frequently Asked Questions
AVIF is an image format built on the AV1 video codec. It compresses substantially better than JPEG and WebP at matching quality, and supports transparency, wide color gamut, and HDR. Browsers display it well, but many desktop applications still cannot open it.
AVIF is far more efficient than the formats you are converting to. A 95 KB AVIF can easily become a 2 MB PNG holding exactly the same pixels. The increase reflects the difference in compression, not a loss or gain in quality.
PNG in most cases, since it is lossless and avoids recompressing an already-compressed image. Use JPG or WebP only when file size matters more than fidelity, and keep the quality setting high to limit stacked compression artifacts.
Yes, AVIF has a full alpha channel. Converting to PNG, WebP, ICO, or TIFF preserves it. JPG and GIF cannot store transparency, so those areas are filled with white instead of turning black.
No. Only the first frame is extracted, because the output formats here each hold a single image from one canvas read. Preserving animation would require frame-by-frame decoding that browser canvas conversion cannot do.
Probably slightly. HDR and 10-bit or 12-bit AVIFs are tone-mapped to 8-bit sRGB during decoding, so highlights and saturated colors may appear flatter. That limit comes from the target formats, which have no way to store the extra range.
Your browser lacks AVIF decoding, which affects older versions in particular. Chrome, Firefox, Edge, and Safari 16.4 or later all handle AVIF, so updating your browser generally resolves it.
No. The AVIF is decoded, redrawn, and re-encoded entirely within your browser, then returned as a download. Nothing is transmitted to a server or stored.
Yes, it’s completely free with no signup required.
