Open CR2 files in your browser

CR2 is the RAW format Canon DSLRs wrote for over a decade. Double-click one on a fresh computer and you often get a blank icon or a "file not supported" message, because the OS viewer has no decoder for it.

You do not need Photoshop to look at them. Every CR2 carries a full-size JPEG preview rendered by the camera itself. OnlineCull reads the CR2 container in your browser, pulls that preview out and shows it in a sortable contact sheet, usually in a few seconds for a whole card.

or drop files here|

Free. No upload: files are read on your device and never sent anywhere.

How it works

  1. 01

    Open the folder with your CR2 files

    Click "Open a folder" or drag the folder onto the page. OnlineCull reads the files in place; nothing is uploaded, so a full card opens in seconds.

  2. 02

    Browse, zoom, check EXIF

    Every photo appears in a contact sheet with camera, lens, ISO, shutter and aperture. Press Enter for the loupe, Z for a 1:1 focus check, and use a histogram with a clipping warning.

  3. 03

    Rate, flag and export

    Rate 1 to 5, flag picks and rejects with P and X, then export XMP sidecars that Lightroom, Bridge and Capture One read, or copy your keepers into a selects folder.

FAQ

Is this CR2 viewer really free?
Yes. No account, no photo cap, no watermark. OnlineCull is a free in-browser tool; it makes money later through optional pro features, never by limiting viewing.
Are my CR2 files uploaded?
No. The files are read locally by your browser and never sent to a server. That is also why it is fast: there is no upload step at all.
Which cameras produce CR2 files?
CR2 comes from Canon DSLRs such as the 5D Mark IV, 6D, 80D, 7D Mark II and Rebel series. OnlineCull also reads the other major RAW formats (CR2, CR3, NEF, ARW, RAF, DNG, ORF, RW2, PEF) plus JPEG and PNG, so mixed folders are fine.
Can I convert CR2 to JPG here?
OnlineCull is a viewer and culling tool, not a converter: it shows the full-size JPEG preview embedded in each CR2 file. For editing and exporting finished JPEGs, hand your picks to Lightroom or any RAW developer using the XMP export.