CR3 to TIFF Converter
Convert CR3 to TIFF in your browser. The full-size JPEG track is what gets converted, so the result has the camera's colour and Picture Style. No raw development happens here. You get an uncompressed 8-bit RGBA TIFF with the resolution recorded. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
RAW expected · other image formats also work
How to use CR3 to TIFF
- 1
Add your CR3 files: drop them here, choose them, or paste from the clipboard.
- 2
There is nothing to tune: the TIFF is written uncompressed. Resizing and rotating are under More options if you need them.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .tiff files one at a time or together as a ZIP.
Why use Aback Images for cr3 to tiff
Where the TIFF goes next
TIFF opens in Photoshop, Lightroom, GIMP, Affinity, macOS Preview, Windows Photos and print RIPs.
TIFF next to CR3
The TIFF stores the camera preview's pixels uncompressed, so it can be as large as the 15 to 60 MB raw file, or larger, depending on the preview's resolution.
No new artefacts
The preview inside the CR3 is a camera JPEG; the TIFF stores its decoded pixels uncompressed, so this step adds no compression damage of its own.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
CR3 vs TIFF
What changes from CR3 to TIFF
Encoding: the CR3 uses lossless sensor data, or lossy C-RAW, in ISO base media boxes; TIFF uses none, LZW, PackBits, Deflate or JPEG, chosen per file, and the download is an uncompressed 8-bit RGBA TIFF with the resolution recorded.
Bit depth: 14 bits per channel in the CR3; TIFF allows 1 to 16 bits per channel, or 32-bit floating point, and the TIFF written here has 8 bits per channel. The sensor's 14 bits are not used: the 8-bit camera preview is converted.
Colour: camera RGB from a Bayer mosaic in the CR3; TIFF supports RGB, CMYK, Lab, greyscale or palette, often with an ICC profile, written here as 8-bit sRGB.
Metadata: the CR3 can carry EXIF in Canon's CMT boxes, maker notes and several JPEG previews; TIFF can carry EXIF, XMP, IPTC and ICC, all stored as tags, but nothing is copied across.
About CR3
CR3 is the raw format of Canon cameras since 2018, starting with the EOS M50 and used by the EOS R mirrorless line. Unlike CR2 it is built on the ISO base media format (the MP4 box structure) and offers a smaller lossy C-RAW option.
CR3 is an ISO base media file (brand 'crx '), the box structure of MP4: EXIF and maker notes sit in CMT1 to CMT4 boxes, a 160×120 thumbnail in THMB, a 1620×1080 preview in PRVW, and separate tracks hold a full-size JPEG and the raw data.
CR3 files usually come from Canon EOS R mirrorless cameras, the EOS M50 onwards and recent EOS DSLRs such as the 90D.
About TIFF
TIFF is the professional archive and print format. It can hold multiple pages, high bit depths and lossless data, and is common in scanning, publishing and GIS.
A TIFF begins with 'II' or 'MM' for the byte order and the number 42, then an offset to the first image file directory (IFD): a table of tags giving the size, compression, colour model and the location of the strips or tiles of pixels. Each further page is another IFD.
When converting CR3 to TIFF makes sense
TIFF is the better choice for printing, scanning and archival masters, while CR3 suits editing photos from current Canon cameras.
TIFF strengths: Lossless and print-ready; Multiple pages in one file; Preferred by print shops and archives. Drawbacks to weigh: Very large files; Browsers cannot display it; Many variants and compression schemes.
Limitations
- C-RAW files are lossy at the sensor level already; that does not affect the embedded JPEG used here.
- The TIFF is written uncompressed for maximum compatibility, so it is large; print shops and archives generally expect that.
- Browsers other than Safari do not display TIFF, so it is not a format for the web.
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Frequently asked questions
Does converting CR3 to TIFF lose quality?
TIFF is written uncompressed, so the pixels are stored exactly as decoded. Those pixels come from the camera's JPEG preview, so its compression stays, but nothing new is lost. The sensor's 14 bits are not used: the 8-bit camera preview is converted.
Which apps open TIFF files?
Photoshop, Lightroom, GIMP, Affinity, macOS Preview, Windows Photos and print RIPs. It opens in Safari only; other browsers do not display TIFF.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.