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Supports: ORF
ORF is the Olympus Raw Format — the unprocessed sensor file Olympus and OM System cameras write before white balance, exposure, or an Art Filter look is applied. AVIF is a modern, AV1-coded still image that delivers the same picture at a fraction of a JPEG's size, which makes this conversion ideal for turning Olympus or OM System shoots into web-ready delivery copies. The render bakes the photo in permanently, so keep your .orf as the editable master and treat the AVIF as the export.
.orf file onto the page or click "+ Add Files" to browse. You can queue several photos at once — frames straight off an OM-D, PEN, or older E-system body.| Property | ORF (source) | AVIF (output) |
|---|---|---|
| Full name | Olympus Raw Format | AV1 Image File Format |
| Type | RAW sensor data (digital negative) | Compressed delivery still |
| Maintainer / origin | Olympus, now OM Digital Solutions (imaging business moved over, completed early 2021) | Alliance for Open Media; spec v1.0.0 February 2019 |
| Bit depth | At least 12 bits per channel | 8, 10, or 12-bit (this converter defaults to 8-bit) |
| Compression | Effectively lossless raw | Lossy by default, lossless optional |
| Editing latitude | Wide — recover highlights, shadows, white balance | Baked in once rendered |
| Browser support | None (needs a raw renderer) | ~93% global; Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+ |
| Best for | Keeping as the editable master | Small, web-ready copies of finished photos |
Yes. An ORF stores unprocessed sensor data — at least 12 bits per channel, versus 8 in a typical delivery file — which is why you can recover highlights, shadows, and white balance long after the shot. To produce an AVIF the converter renders the raw first, demosaicing the sensor data and baking in white balance, exposure, and tone. Once that rendered image is encoded as AVIF, the latitude is gone. Render once and keep your original .orf as the master. (If your camera also wrote a matching .ori file, that is an in-camera edited variant — convert from the original .orf for the full raw data.)
Substantially, though the exact ratio depends on the photo and your quality setting. An ORF holds full-bit-depth sensor data and often runs into the tens of megabytes; AVIF uses AV1's intra-frame coding, which the Alliance for Open Media and Netflix measured as roughly half the size of a comparable JPEG at similar visual quality. In our testing, a full-resolution Micro Four Thirds ORF dropped to a small fraction of its original size at the "Very High" preset with no obvious loss on screen. Lower the "Quality Preset" or set a "Specific file size" if you need to go smaller still.
Not reliably. An ORF records the raw sensor data plus the camera's settings, but an Art Filter, color profile, or in-camera style is a rendering instruction applied by Olympus's own pipeline — third-party raw renderers do not always reproduce it exactly. If matching the in-camera look matters, apply your edit in a raw editor that reads ORF, export a finished image, then convert that to AVIF so the result matches what you saw on the camera.
In essentially every current browser. AVIF is supported across roughly 93% of global traffic — Chrome from version 85, Firefox from 93, Safari from 16.4, and Edge from 121 — so it works for modern websites, and many image viewers and design tools now read it too. For audiences on older software, serve AVIF with a JPEG fallback. If you need a copy that opens literally anywhere, including legacy apps and email, convert ORF to JPG instead.
Choose by where the file is going. AVIF is the right pick for small, web-ready copies where the viewer supports it. If you want a universally compatible photo that opens on any device and in any app, ORF to JPG is the safer everyday target. If you need a lossless master for print or further editing, ORF to TIFF preserves full quality without AVIF's lossy compression. In every case the original .orf stays untouched as your negative.
Your file is uploaded over an encrypted connection, rendered and re-encoded to AVIF on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. The main practical limit is upload size and time, since ORF files often run tens of megabytes each, rather than anything on your device.