About AVIF Files
AVIF Image
AVIF 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.
Family
Raster & Vector Images
Extension
.avif
MIME Type
image/avif
Can Use As
00 00 00 1C 66 74 79 70 61 76 69 66
ASCII: ....ftypavif
📈 Target Minimum File Size (Guaranteed ≥ KB)
Lossless JPEG Q100 + standard COM segment padding for government & exam portals
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HOW AVIF CAME TO BE.
AVIF — AV1 Image File Format — is the still-image cousin of the AV1 video codec. When the Alliance for Open Media (backed by Google, Amazon, Microsoft, Mozilla, Netflix, Intel and many others) published AV1 in 2018 as a royalty-free successor to HEVC, someone had the obvious idea: if a single video frame already compresses better than JPEG, why not ship it as an image file? The AVIF specification was finalized in February 2019.
Adoption followed quickly on the web. Chrome shipped decoding in August 2020, Firefox in October 2021, and Netflix moved billions of thumbnails over during 2021-2022. Apple, the last major holdout, finally added Safari support in October 2022 with iOS 16 and macOS Ventura. Today AVIF is the format every CDN quietly wants you to use — 30-50% smaller than JPEG at equal perceived quality, with native transparency and HDR.
Technical Specifications
- MIME type
- image/avif
- Container
- HEIF (ISOBMFF)
- 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
Typical Sizes & Weights
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
STRENGTHS & LIMITATIONS.
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.
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.
CURIOSITIES & TRIVIA.
AVIF files are technically single-frame AV1 video streams — the decoder is the same code used by YouTube for 4K playback.
At the same visual quality, an AVIF photo is typically 30-50% smaller than JPEG and 20% smaller than WebP.
The format supports 12-bit color depth — four times more tones per channel than JPEG — making it HDR-ready.
It can store animations (like GIFs) but nobody uses that feature in practice; APNG and WebP won that battle.
A 4K AVIF photo often fits in under 500 KB — the same shot as JPEG at visually equivalent quality usually exceeds 1.5 MB.
Specialized Utilities for .AVIF Files
Compress Image to 20KB
Compress signature scans, stamp images, and ID photos to strictly ≤ 20 KB (20,000 bytes) for strict online exam and government application portals using binary-search JPEG quantization.
Compress Image to 50KB
Compress JPG, PNG, or WebP photos to strictly under 50 KB (50,000 bytes) for passport portals, university admissions, civil service forms, and KYC uploads without changing pixel dimensions.
Compress JPG to 100 KB
Upload a JPG and download a decodable JPG at or below 100,000 bytes. If the limit cannot be reached, no output is offered.
Crop Image & Photo Resizer
Crop and resize JPG, PNG, WEBP, and AVIF images to exact pixel dimensions, social media aspect ratios, or custom print DPI online for free.
Resize Image
Resize images to exact dimensions or scale by percentage. Lock aspect ratio to prevent distortion. Supports all common image formats.
PNG Compressor — Reduce PNG Size Preserving Transparency
Compress PNG images up to 80% while preserving full alpha-channel transparency, or lock exact file size targets (20 KB, 50 KB, 100 KB).
WEBP Compressor — Optimize WebP for Core Web Vitals
Compress WEBP images for ultra-fast page loads and Lighthouse scores with fine-grained quality sliders and exact byte targets.
Favicon Generator — Multi-Resolution .ICO from PNG, SVG or WEBP
Generate a production-ready multi-resolution favicon.ico containing 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256 alpha layers from any logo.
EXIF Metadata Remover
Strip hidden GPS coordinates, camera serial numbers, timestamps, and XMP/IPTC metadata from JPG, PNG, WebP, and TIFF photos before sharing online.
Image to Text (OCR)
Extract text from images using optical character recognition. Supports photos of documents, screenshots, receipts, and handwritten notes in 100+ languages.
JPG to Word Converter (OCR)
Convert scanned JPG, PNG, and WEBP images into editable Microsoft Word (DOCX) documents using 12-language optical character recognition (OCR).
CONVERT FROM AVIF
CONVERT TO AVIF
Common Use Cases
High-efficiency web images, HDR photography, next-gen web optimization.
Related Formats
Popular comparisons
AVIF vs JPG
Differences, file size, and when to choose each format.
AVIF vs PNG
Differences, file size, and when to choose each format.
AVIF vs WEBP
Differences, file size, and when to choose each format.
AVIF vs GIF
Differences, file size, and when to choose each format.
AVIF vs TIFF
Differences, file size, and when to choose each format.
AVIF vs ICO
Differences, file size, and when to choose each format.
Popular AVIF conversions
The most-requested destinations when starting from AVIF.
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 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 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.
Yes. Every .avif file uploaded to KaijuConverter is transferred over TLS 1.3, processed in an isolated container with SHA-256 verification, and automatically deleted within 30–60 minutes (or immediately with 1 click).
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