CR3 to PDF
Turn a Canon CR3 photo into a one-page PDF for quick review. The page uses the camera’s embedded preview image, so it can be smaller than the full raw frame.
Format Comparison & Technical Specifications
| Specification | CR3 | |
|---|---|---|
| MIME Type | - | application/pdf |
| Type | - | document container |
| Compression | - | Flate / JPEG / JBIG2 / CCITT |
| Standard Specification | - | ISO 32000-2:2020 |
| Magic Bytes Header | - | 25 50 44 46 (%PDF) |
Format Overview & Applications
This makes the route useful for a quick Canon CR3 contact note, but anyone checking fine detail should render a full-resolution image from a raw editor.
Technical Specifications & Codec Breakdown
For CR3, the conversion first searches the container for its PRVW embedded JPEG preview; when found, it uses that preview rather than asking LibRaw to decode the CR3 sensor data, then converts the preview to PNG pixels.
OS & Browser Compatibility
Canon DPP or a CR3-aware editor can develop the camera original; this PDF shows the embedded preview when the fast path finds one, which is suited to quick review rather than raw editing.
Useful info
For critical detail inspection, export a full-resolution render from a CR3-aware editor first; the embedded preview can be smaller than the camera’s raw frame.
Format Comparison & Technical Specifications
If the CR3 contains a 1600×1067 PRVW image, the PDF page is about 10.7×7.1 inches at 150 dpi.
Frequently Asked Questions
Does the CR3 page use full sensor resolution?
The first matching PRVW preview JPEG is preferred when available, and its dimensions determine the PDF page image.
Why is this faster than developing a CR3?
The CR3 conversion can extract its embedded preview directly because LibRaw does not decode this container.
Is the embedded preview detailed enough for print inspection?
The preview JPEG determines the page resolution; a small preview may look soft when enlarged for print.