Why convert CR2 to JPG?
CR2 (Canon RAW version 2) is the unprocessed image format written by Canon EOS DSLRs released between 2004 and 2018 — from the entry-level EOS 1100D to legends like the 5D Mark III and 7D Mark II. A CR2 file holds the raw 14-bit sensor data exactly as the camera captured it, which is why files are large (20–35 MB) and why most software outside Canon's own Digital Photo Professional won't open them.
The upside of that raw data is headroom: about four times the color depth of an 8-bit JPEG, plus recoverable highlight and shadow detail that a camera-processed JPEG would have discarded forever. The downside is compatibility — email it, upload it to most websites, or double-click it on a stock Windows PC, and nothing happens.
Converting CR2 to JPG solves the compatibility problem instantly. ShiftRaw decodes your CR2 file in the browser using the same open-source LibRaw engine that powers many desktop RAW developers, applies the camera's recorded white balance, and hands you a ready-to-share image — without ever uploading your photos anywhere.
Best for: JPG is the universal choice: every device, browser, app and platform displays it, and at 90%+ quality the compression is invisible. A 45-megapixel RAW frame converts to a 5–10 MB JPG that uploads anywhere. For web and client delivery it remains the sensible default — start here unless you specifically need transparency (PNG) or the smallest possible files (WebP).