Dynapik offers a free online tool to change image types - no need to download anything. It's quick and easy to use. You can change your CR2 images to AVIF format. This tool works for both professionals and casual users. Convert your images to AVIF in seconds.
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Canon RAW 2
The standard raw format for Canon DSLRs from 2004 to 2018.
CR2 (Canon Raw version 2) is the proprietary raw image format used by Canon EOS digital SLR cameras from the mid-2000s until the introduction of the CR3 format in 2018. If you shot with a Canon 5D Mark II, 7D, or Rebel T3i, you have thousands of these files. Like all raw formats, a CR2 file contains the unprocessed data from the image sensor. It is not an image yet; it is a dataset of light intensity values that must be 'demosaiced' by software to create a viewable picture. This allows you to change the white balance, recover highlights, and pull detail out of shadows long after the photo was taken.
CR2 is based on the TIFF file structure. It uses lossless compression to store the sensor data, which is typically 12-bit or 14-bit depending on the camera model. The file contains the raw image data, a full-size JPEG preview (for reviewing on the camera screen), and extensive 'MakerNotes' metadata that records every camera setting, from the lens used to the focus point selected.
CR2 replaced the older CRW format in 2004 with the release of the EOS 20D. It remained the standard for 14 years, making it one of the most widely supported and understood raw formats in history. It was eventually succeeded by CR3, which offers better compression.
AVIF (AV1 Image File Format)
The royalty-free successor to WebP, offering the world's best compression for the web.
AVIF is the cutting-edge image format derived from the AV1 video codec. Developed by the Alliance for Open Media (AOMedia)—a consortium including Google, Netflix, Amazon, and Microsoft—it was designed to be the ultimate royalty-free format for the web. AVIF offers significantly better compression than WebP, which was already better than JPEG. It supports features that WebP lacks, such as 10-bit and 12-bit color depth for HDR (High Dynamic Range) images, and it produces fewer compression artifacts at low bitrates. While encoding AVIF files takes longer than other formats, the bandwidth savings are substantial, often reducing file sizes by 50% compared to JPEG.
AVIF uses the HEIF (High Efficiency Image File Format) container structure but encodes the image data using the AV1 video codec. This allows it to use advanced video compression techniques like intra-frame prediction to squeeze image data down to incredibly small sizes. Unlike WebP, which is limited to 8-bit color, AVIF supports 10-bit and 12-bit color depths, making it the first viable web format for HDR photography. It also supports 4:2:0, 4:2:2, and 4:4:4 chroma subsampling, allowing for sharp text and graphics even with lossy compression.
The AV1 video codec was released in 2018 as a royalty-free alternative to HEVC (H.265). The AVIF image format specification followed in 2019. Adoption was rapid compared to previous formats. Chrome added support in 2020, followed by Firefox in 2021. Apple added support in iOS 16 and macOS Ventura (2022), completing the 'universal support' puzzle much faster than WebP did.
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