Add your CR3 file
Drop one or more .cr3 files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Developing a .cr3 camera file into .tiff turns unprocessed sensor data into a finished image any app can open. Free, private, and validated — the file never leaves your browser.
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.Developing a .cr3 camera file into .tiff turns unprocessed sensor data into a finished image any app can open. A .cr3 file is Canon's current RAW photograph format, introduced alongside its mirrorless push and structurally unrelated to the TIFF-based CR2 it replaced. Built on the same ISO base media architecture as MP4 video, a .cr3 wraps Canon's CRX-coded sensor data together with previews and rich capture metadata.
A .tiff file is a Tagged Image File Format raster, the long-standing archival and prepress standard for images that must not lose a single bit. Its tag-based structure lets one .tiff hold multiple pages, layers of metadata, and pixel formats from 1-bit fax scans to 32-bit floating-point channels. For this route the practical draw is losslessly preserves any bit depth and color space you throw at it and decades of stability make it the safest long-term archival bet — balanced against files are huge — often 10x a visually identical JPEG, which is worth knowing before you commit a large batch.
The practical trigger for this conversion is usually a mismatch: with .cr3, the proprietary CRX codec kept third-party support lagging for months after launch. Switching to .tiff buys you losslessly preserves any bit depth and color space you throw at it, which is why it is the better fit for archival masters for museums, libraries, and digitization projects. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
| Aspect | Canon RAW 3 (.cr3) | TIFF image (.tiff) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Lossless — every pixel or sample is preserved exactly |
| How it stores data | iSO BMFF (MP4-family) container with a proprietary 'crx' codec for the raw payload | structured as Image File Directories (IFDs) of numbered tags, allowing multiple images per file |
| Strongest at | raw capture on every current Canon EOS R-series body | archival masters for museums, libraries, and digitization projects |
| Weak spot | the proprietary CRX codec kept third-party support lagging for months after launch | files are huge — often 10x a visually identical JPEG |
| Metadata | eXIF and XMP are present alongside Canon's CTMD timed-metadata boxes and MakerNotes, which include autofocus, lens-correction, and roll/pitch orientation data | eXIF is itself structured as TIFF tags, so TIFF holds it natively, alongside XMP packets, IPTC records, ICC profiles, and GeoTIFF georeferencing tags |
Drop one or more .cr3 files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Select .tiff in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if TIFF is selectable, the route is real and validated.
Press Convert. A LibRaw WebAssembly decoder demosaics the sensor data in your browser and renders a developed image ready for export.
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid TIFF file. Outputs keep the original filename with the .tiff extension.
Since cr3 is lossless-oriented and tiff is lossless-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .tiff itself requires.
Yes — the .cr3 file is processed inside your browser tab and never uploaded. A LibRaw WebAssembly decoder demosaics the sensor data in your browser and renders a developed image ready for export. Close the tab and the file is gone from memory.
Every serious image editor, scanner driver, and DTP application on Windows, macOS, and Linux reads TIFF, and both major OSes preview it natively. Web browsers are the gap: Chrome, Firefox, and Edge will download rather than display a .tiff, so web delivery always requires conversion to PNG, JPEG, or WebP.
It depends on the content: structured as Image File Directories (IFDs) of numbered tags, allowing multiple images per file. Convert one representative file first and compare before batch-processing a large set.
In .cr3, eXIF and XMP are present alongside Canon's CTMD timed-metadata boxes and MakerNotes, which include autofocus, lens-correction, and roll/pitch orientation data. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.