Web-based RAW Image Viewer, Editor [Javascript]

Serious Photographers and Semi-Pro DSLR users shoot all their images in RAW rather than lossy JPEG format. Shooting in RAW has its own advantages.

When you shoot in RAW, you can play with the photo’s appearance: Saturation, vibrance, Clarity, sharpness, brightness, exposure, adjust highlights, shadows and more, without losing any quality.

When you shoot in RAW, you’re left with handful of softwares which can edit and understand RAW formats like NEF, ARW, etc. Most popular softwares being Adobe Lightroom Photoshop CS, iPhoto. You don’t have access to these all the time, thats what webapps are designed for: App works on any PC, without installing.

Rawson.js is a lightweight Javascript library that enables you to edit RAW images in your browser.

Try Rawson now

Rawson is small javascript library being super tiny at 500kb only. IT requires no softwares, or plugins, just your modern browser like Chrome or Safari will do (Sorry, No IE).

Rawson is your perfect companion for editing photos on public computers.

Supported RAW file formats: .CR2, .CRW, .ORF, .NEF for Cameras like Canon, Nikon, Sony alpha, Minolta, Olympus, Hasselblad.

Browser support: Firefox 3.6+, Chrome 8+

OS: windows, Linux (any flavor), Mac OSX

Rawson is Open source project, source code is available on github.


  • browser-based previews of all common RAW formats.
  • easy-to-use editing functions: zoom, scale and rotate the opened photo. More editing functions can be added via an extensible plugin interface.
  • Saving functions: rawson.js runs in your browser, but it doesn’t destroy your work. At any time, you can download a JPEG copy of the photo you are editing. Image saving is handled purely by Javascript, you don’t need any server-side component for that. New file formats can be added via plugins.
  • Post to photosharing sites: Currently supports img.ur, but more photosharing services can be added via the plugin interface

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