CONVERT
ORF → AVIF
Fast, secure ORF to AVIF conversion. No registration required.
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Here is the short version — ORF is Olympus's RAW camera format. Hence the need for AVIF. Turn a ORF image into a AVIF in seconds. The two formats share the same raster DNA so the visible quality is very close; what changes is how the file is packaged, which matters for browsers, editors and CMS uploaders. KaijuConverter runs the conversion server-side and deletes both files within two hours. A quick refresher — ORF is Olympus's RAW camera format. By contrast, AVIF is the AV1-based next-gen image codec, extremely efficient with full HDR and alpha support.
Olympus RAW ORF
Source formatORF is Olympus camera RAW format.
AVIF Image
Target formatAVIF is a next-generation image format based on the AV1 video codec. It offers significantly better compression than JPEG and WebP while maintaining excellent visual quality, including HDR and wide color gamut support.
Why convert ORF to AVIF
The real reason to move from ORF to AVIF is almost never picture quality — both raster formats store essentially the same pixels. It is about the tools downstream: which editors open the file natively, which CMSes upload it without transcoding, which social platforms accept it. Picking AVIF solves those edge cases at the cost of a short conversion step.
HOW TO CONVERT
ORF → AVIF
Provide the ORF
Click or drag to upload. We accept a single ORF file per job, with an optional queue of additional images for batch mode.
Encode to AVIF
The conversion decodes the ORF, resolves the colour space to sRGB and writes the AVIF container around the pixel data.
Save the AVIF
The download is streamed back over HTTPS. If you uploaded multiple files, a ZIP with all AVIF outputs is produced instead.
Common Use Cases
Document embeds
Word, Google Docs and Pages embed AVIF with correct aspect ratio; ORF may appear as a broken image icon.
Printer-friendly export
Consumer and office printers drive AVIF through their print spoolers with no additional drivers.
Presentation slides
PowerPoint and Keynote treat AVIF as a first-class citizen; ORF may need manual re-insertion per slide.
Online form uploads
Identity verification, job applications and legal forms often list AVIF as the only accepted image format.
ORF vs AVIF — Strengths and limitations
What each format does best, and where it falls short.
ORF Strengths
- Compact files relative to sensor size (Four Thirds is smaller than APS-C).
- Computational photography features (Live Composite, Pro Capture) baked into format.
- Stable across 20+ years of Olympus/OM SYSTEM bodies.
- In-body stabilization means ORF handheld shots rival tripod work.
Limitations
- Smaller sensor means less dynamic range than full-frame raws.
- Lossy compressed ORF is the default — hidden quality loss.
- Market share is small; fewer tutorials and fewer Lightroom profiles.
AVIF Strengths
- Best-in-class compression efficiency — 30-50% smaller than JPEG for the same quality.
- Royalty-free and patent-unencumbered (unlike HEIC).
- Supports alpha transparency, HDR, wide gamut (BT.2020), and up to 12-bit color.
- Progressive decoding: a blurry preview appears while the file is still downloading.
- Supported in all major browsers since late 2022 — no polyfills needed.
Limitations
- Encoding is CPU-expensive — an AVIF export can take 10-30× longer than JPEG.
- Older software (pre-2022) cannot open AVIF without plugins.
- Email clients still largely ignore it — stick to JPEG for attachments.
ORF vs AVIF — Technical specifications
Side-by-side comparison of the technical details.
| Specification | ORF | AVIF |
|---|---|---|
| MIME type | image/x-olympus-orf | image/avif |
| Extension | .orf | — |
| Container | TIFF/EP with Olympus MakerNote | HEIF (ISOBMFF) |
| Sensor format | Four Thirds / Micro Four Thirds | — |
| Bit depth | 12 or 14-bit | — |
| Codec | — | AV1 (intra-only) |
| Max dimensions | — | 65 536 × 65 536 px |
| Color depth | — | Up to 12-bit per channel |
| Color spaces | — | sRGB, Display-P3, BT.2020, arbitrary ICC |
ORF vs AVIF — Typical file sizes
Approximate file sizes for common scenarios.
ORF
- 20 MP ORF (OM-1, E-M1 III) 18-25 MB
- 50 MP Hand-Held High Res composite 60-80 MB
- 80 MP Tripod High Res ORF 100-140 MB
AVIF
- Thumbnail (400px) 10-30 KB
- Web photo (1920px) 80-300 KB
- 4K photo (3840px) 300 KB - 1.2 MB
- Lossless copy of 24MP photo 8-15 MB
Quality & Compatibility
ORF-to-AVIF conversion does not change the visible content. Quality is capped by the ORF decode; re-encoding a lossy source at high quality cannot recover detail that was already discarded. For archival masters, keep the original ORF alongside the AVIF copy.
Tips for Best Results
- Large ORF files may look identical to small AVIF files for photographic content; pick quality based on end use, not headline megapixels.
- For print, export AVIF at 300 DPI minimum and check that the colour profile embedded matches the print shop specification.
- Batch-convert related ORF images in one pass so they share identical encoder settings and look consistent side-by-side.
Frequently Asked Questions
Frequently Asked Questions
It depends on the codecs involved. If both ORF and AVIF are lossy, the pixels are re-encoded and a small amount of detail is discarded — invisible at default quality settings on photographs. If AVIF is lossless (PNG, TIFF, BMP) the output keeps every pixel of the decoded ORF exactly, but cannot recover detail that ORF had already compressed away.
Often yes, especially when AVIF is lossless. ORF tuned for efficient web delivery will usually produce smaller files than AVIF's default settings. If file size matters, drop the quality in Advanced or pick a more compressed target format instead.
KaijuConverter uploads over HTTPS, processes the image in an isolated container and deletes both the source and the output within two hours. No account is required, file contents are never logged, and we do not use uploads to train any model. For confidential material, the paid plan includes a data-processing agreement.
Related comparisons
See these formats side by side to understand which fits your use case best.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.