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RAW Image Viewer

Preview camera RAW files (CR2, NEF, ARW, DNG, RAF, ORF, RW2 and more) by extracting the embedded JPEG preview.

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Accepted: .cr2,.cr3,.nef,.arw,.dng,.raf,.orf,.rw2,.pef,.srw,.x3f,.raw

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RAW Image Viewer

Camera RAW files are huge and — unlike JPG — don't render inline in browsers, email clients, or most file managers. This tool gives you a fast, browser-based way to see a RAW file without opening Lightroom or Photoshop.

How it works

Every mainstream RAW format embeds one or more JPEG previews that the camera uses for playback and histograms. The tool scans the binary for JPEG markers (FFD8…FFD9), picks the largest segment, and shows it. On most modern cameras the embedded preview is a full-resolution JPEG — good enough for quick culling, first-pass review, quick-look sharing, or pulling a preview for a contact sheet.

Supported RAW formats

The tool works with any file whose container includes a standard JPEG preview:

  • Canon — CR2, CR3
  • Nikon — NEF, NRW
  • Sony — ARW, SR2
  • Fujifilm — RAF
  • Olympus / OM System — ORF
  • Panasonic / Leica — RW2, RWL
  • Pentax / Ricoh — PEF, DNG
  • Samsung — SRW
  • Sigma — X3F
  • Adobe DNG — from any camera
  • Generic .raw exports from scientific and industrial cameras, where the sensor capture writers include a JPEG preview block

Why not demosaic in the browser?

Full RAW development (demosaic, white balance, tone curve, colour profile) requires gigabytes of per-camera calibration data — the same data bundled with libraw, dcraw, Lightroom, and Capture One. Running that in the browser isn't realistic yet. Extracting the embedded preview gives you a fast, accurate representation of the camera's own interpretation of the shot, which is exactly what you want for triage and sharing.

Typical uses

  • Culling — quickly step through a shoot and decide what to keep.
  • Sharing — export the embedded JPG to send on Slack/iMessage/email.
  • Verification — confirm a RAW file imported correctly before deleting a memory card.
  • Client proofs — download previews for contact sheets without opening the NLE/RAW tool.

What you get

After scanning, the tool shows the preview and offers a preview.jpg download. EXIF and colour information are whatever the camera embedded in the preview — usually the same shot metadata visible in camera playback.

Privacy

RAW files often contain unreleased shoots. This tool runs entirely client-side — your files are never uploaded.