AVIF vs SR2
A detailed comparison of AVIF Image and Sony RAW SR2 — file size, quality, compatibility, and which format to choose for your workflow.
AVIF Image
Raster & Vector ImagesAVIF is a next-generation image format based on the AV1 video codec. It offers significantly better compression than JPEG and WebP while maintaining excellent visual quality, including HDR and wide color gamut support.
About AVIF filesSony RAW SR2
Raster & Vector ImagesSR2 is an older Sony RAW format used in some Sony Alpha cameras. Newer Sony cameras use ARW instead.
About SR2 filesStrengths Comparison
AVIF Strengths
- Best-in-class compression efficiency — 30-50% smaller than JPEG for the same quality.
- Royalty-free and patent-unencumbered (unlike HEIC).
- Supports alpha transparency, HDR, wide gamut (BT.2020), and up to 12-bit color.
- Progressive decoding: a blurry preview appears while the file is still downloading.
- Supported in all major browsers since late 2022 — no polyfills needed.
SR2 Strengths
- Full Sony Alpha early-era sensor data preserved.
- Supported by major raw processors.
- Metadata includes Konica Minolta pre-Sony era compatibility.
Limitations
AVIF Limitations
- Encoding is CPU-expensive — an AVIF export can take 10-30× longer than JPEG.
- Older software (pre-2022) cannot open AVIF without plugins.
- Email clients still largely ignore it — stick to JPEG for attachments.
- Metadata support (EXIF, XMP) exists but tooling is less mature than for JPEG.
SR2 Limitations
- Transitional format — limited to 2006-2008 bodies.
- Superseded by ARW.
- Proprietary with no public spec.
- Essentially legacy — no new content.
Technical Specifications
| Specification | AVIF | SR2 |
|---|---|---|
| MIME type | image/avif | image/x-sony-sr2 |
| Container | HEIF (ISOBMFF) | TIFF/EP with Sony MakerNote |
| Codec | AV1 (intra-only) | — |
| Max dimensions | 65 536 × 65 536 px | — |
| Color depth | Up to 12-bit per channel | — |
| Color spaces | sRGB, Display-P3, BT.2020, arbitrary ICC | — |
| Extension | — | .sr2 |
| Successor | — | .arw (2008+) |
| Ancestor | — | .mrw (Konica Minolta) |
Typical File Sizes
AVIF
- Thumbnail (400px) 10-30 KB
- Web photo (1920px) 80-300 KB
- 4K photo (3840px) 300 KB - 1.2 MB
- Lossless copy of 24MP photo 8-15 MB
SR2
- 10 MP SR2 (Alpha 100) 12-18 MB
- 12 MP SR2 (Alpha 700) 15-22 MB
Ready to convert?
Convert between AVIF and SR2 online, free, and without installing anything. Encrypted upload, automatic deletion after 60 minutes.
Frequently Asked Questions
AVIF (AV1 Image File Format) is a cutting-edge image format derived from the AV1 video codec, backed by the Alliance for Open Media. It delivers up to 50% smaller files than JPEG with equal or better visual quality, plus HDR and transparency support.
AVIF (AV1 Image formatoo de arquivo) is a cutting-edge image formato derived de the AV1 video codec, backed pelo Alliance para abrir Media. It delivers up to 50% smaller arquivos than JPEG com equal ou better visual quality, plus HDR e transparência support.
AVIF files open in Chrome, Firefox, Safari (from macOS Ventura), Edge, and GIMP 2.10+. Support is growing rapidly, but some older image editors may not yet handle AVIF natively.
AVIF arquivos abrir in Chrome, Firefox, Safari (from macOS Ventura), Edge, e GIMP 2.10+. Support is growing rapidly, mas some older image editors may not yet handle AVIF natively.
AVIF provides better compression and quality than WebP, especially for photographs. However, WebP has broader software support today. Use AVIF for maximum performance on modern browsers and WebP as a reliable fallback.
AVIF fornece better compressão e quality than WebP, especially para photographs. Porém, WebP has broader software support today. usar AVIF para máximo performance on moderno browsers e WebP como um reliable fallback.