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Supports: 3FR, APNG, ARW, AVIF, BMP, CR2 +30 more
AVIF is the AV1 Image File Format: still pictures encoded with AV1's intra-frame coding and wrapped in an ISO base media container. The Alliance for Open Media published version 1.2.0 of the specification in October 2025, and it is now decoded by roughly 94.7% of browsers. It is the strongest option available when your goal is delivering the same picture in fewer bytes, and it adds 10- and 12-bit colour and alpha transparency on top. It is the wrong option when the file has to open in older desktop software. This page lays out that trade-off before you convert.
| Property | AVIF | WebP | JPEG | PNG |
|---|---|---|---|---|
| Coding basis | AV1 intra-frame (AOMedia) | VP8 intra-frame plus a separate lossless mode (Google) | DCT, ISO/IEC 10918-1 (1992) | DEFLATE, W3C PNG Third Edition |
| Container | ISO base media file format | RIFF | JFIF byte stream | PNG chunk stream |
| Lossy and lossless | Both | Both | Lossy in practice | Lossless only |
| Bit depth | 8, 10 or 12-bit | 8-bit | 8-bit | 8 or 16-bit |
| Alpha transparency | Yes, as an auxiliary image | Yes | No | Yes |
| Wide gamut and HDR | Yes | No | No | No |
| Relative file size at equal quality | Smallest of the four | Smaller than JPEG | The long-standing baseline | Largest for photographs |
| Royalty-free | Yes | Yes | Yes | Yes |
| Browser support | ~94.7% — Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+, Opera 71+ | Every current browser | Universal | Universal |
| Desktop software support | Patchy — recent macOS and Windows preview it, many editors do not | Good | Universal | Universal |
| Best for | Web delivery and shrinking a photo library | Broad web compatibility with good compression | Anything that must open everywhere | Screenshots, line art, anything needing lossless alpha |
.avif. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours — no sign-up, no watermark.Each preset maps to a single numeric quality value that our converter passes straight to the AVIF encoder, so you can reason about the setting instead of guessing at it.
| Quality Preset | Encoder quality value | Sensible use |
|---|---|---|
| Highest | 100 | Archival re-encodes where you want the least possible deviation from the source |
| Very High (Recommended) | 95 | The default; visually indistinguishable from the source for normal viewing |
| High | 90 | Web delivery where every kilobyte counts and the image is viewed at normal size |
| Medium | 80 | Thumbnails, gallery grids, background imagery |
| Low | 70 | Placeholders and low-priority assets |
| Very Low | 60 | Aggressive size reduction with visible softening |
| Lowest | 50 | Only when a hard size ceiling leaves no alternative |
Choosing "Specific file size" instead bypasses the preset entirely: the converter re-encodes the picture repeatedly, narrowing in on settings that land under the number you entered, and with Auto Scale enabled it will also search the output width rather than only lowering quality.
Some, unavoidably. AVIF encoding here is lossy, so re-encoding an already-lossy JPEG is a second generation, which can soften fine detail and will never restore anything JPEG already discarded. The payoff is size: AVIF consistently produces smaller files than JPEG at comparable visual quality, and usually smaller than WebP too. Converting from a lossless source such as PNG or TIFF is where the format is most convincing, because there is no earlier generation loss to compound.
Yes. The AVIF specification stores alpha as an auxiliary image item alongside the main picture, matched to its bit depth, and this converter preserves the alpha channel of transparent PNG, WebP, GIF and HEIC sources by default. That makes AVIF one of very few formats offering lossy compression and a genuine alpha channel at the same time — JPEG cannot do it at all.
Browser support sits near 94.7% globally: Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+ and Opera 71+ all decode AVIF without a flag. Desktop software is the weak spot — recent macOS and Windows builds preview AVIF, but plenty of image editors, older viewers and print tools still do not. If a recipient needs guaranteed compatibility, send them a JPG or PNG instead.
Yes. RAW formats including NEF (Nikon), CR2 and CR3 (Canon), ARW (Sony), DNG, ORF, RAF, RW2, PEF, 3FR, X3F and several more are accepted and rendered directly to AVIF. AVIF's 10- and 12-bit support means more of the original tonal range survives than it would in an 8-bit JPEG. It is still a delivery format, though — a RAW file carries editing latitude that no final image format preserves, so keep the RAW if you may want to re-develop the shot.
No. An animated source converted to a still image target here yields the first frame only, as a single AVIF picture. The AVIF specification does define image sequences, but this conversion produces a still. For moving content, a video target such as Image to WebM or an animated image such as Image to APNG is the better route.
Switch Image Compression from "Quality Preset" to "Specific file size" and type the number with a Bytes, Kilobytes or Megabytes unit. The converter then encodes iteratively, testing settings until the output fits under your target. Keep Auto Scale enabled and it will also search the output width, which is what lets an aggressive target succeed on a large photo instead of failing outright.
Because conversions use the preset scale rather than a free-form percentage — the percentage-based quality and target-size-percentage controls that appear on some compression tools are deliberately hidden on image conversion pages. Quality Preset and Specific file size are the two compression modes offered here, and between them they cover both "make it look right" and "make it fit".
They travel over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. There is no sign-up, no watermark, and files are never shared or made public. If you already have AVIF files and only want them smaller, use compress AVIF rather than converting them again.