ORF to TGA Converter
Convert ORF to TGA in your browser. The preview inside the maker notes is found by scanning the whole file, and that preview is what gets converted. No raw development happens here. You get a run-length encoded 32-bit TGA with alpha. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
RAW expected · other image formats also work
How to use ORF to TGA
- 1
Add your ORF files: drop them here, choose them, or paste from the clipboard.
- 2
There is nothing to tune: the TGA is written losslessly. Resizing and rotating are under More options if you need them.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .tga files one at a time or together as a ZIP.
Why use Aback Images for orf to tga
Where the TGA goes next
TGA opens in Unreal Engine, Unity, Blender, Photoshop, GIMP and Substance tools.
TGA next to ORF
The TGA holds the camera preview's pixels with lossless compression: usually smaller than a 12 to 30 MB raw file, though far larger than a JPEG of the same photo.
No new artefacts
The preview inside the ORF is a camera JPEG; the TGA stores its decoded pixels losslessly, so this step adds no compression damage of its own.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
ORF vs TGA
What changes from ORF to TGA
Encoding: the ORF uses losslessly compressed sensor data, with a preview and thumbnail; TGA uses uncompressed or run-length encoded (RLE), and the download is a run-length encoded 32-bit TGA with alpha.
Bit depth: 12 bits per channel in the ORF; TGA allows 8, 15, 16, 24 or 32 bits per pixel, and the TGA written here has 32 bits per pixel. The sensor's 12 bits are not used: the 8-bit camera preview is converted.
Colour: camera RGB from a Bayer mosaic in the ORF; TGA supports RGB, greyscale or a colour map, written here as 8-bit sRGB.
Metadata: the ORF can carry EXIF and Olympus maker notes, which also contain the preview; TGA can carry an image ID field and an optional extension area with author and date, but nothing is copied across.
About ORF
ORF is the raw format of Olympus and OM System cameras, built around Four Thirds and Micro Four Thirds sensors. It stores 12-bit sensor data with a JPEG preview kept inside Olympus's maker notes.
ORF looks like TIFF but replaces the version number 42 with the letters 'RO', so a little-endian file starts 'IIRO' and generic TIFF readers reject it. Its JPEG preview is not in the main image directory but inside the camera-settings block of Olympus's maker notes.
ORF files usually come from Olympus E-series DSLRs, OM-D and PEN mirrorless cameras and OM System bodies.
About TGA
TGA is a simple raster format still widely used for game textures and 3D rendering pipelines because it stores alpha channels reliably and loads fast.
A TGA has an 18-byte header (ID length, colour map type, image type 2 for true colour or 10 for RLE, origin, size, bits per pixel and a descriptor byte whose bits give the alpha depth and whether rows run top-down), then the pixels; version 2 files end with a 'TRUEVISION-XFILE' footer.
When converting ORF to TGA makes sense
TGA is the better choice for game textures and 3D software, while ORF suits editing Olympus and OM System photos in a raw developer.
TGA strengths: Reliable alpha channel; Fast and simple to load; Common in game engines. Drawbacks to weigh: Large files; Not viewable in browsers.
Limitations
- High Res Shot files combine several exposures in camera; the preview shows the combined result at its stored size.
- The run-length encoding used here is lossless, and game engines read compressed and uncompressed TGA alike.
- TGA files do not open in browsers, so keep a PNG for previews.
More conversions
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Frequently asked questions
Does converting ORF to TGA lose quality?
TGA is written losslessly, so the pixels are stored exactly as decoded. Those pixels come from the camera's JPEG preview, so its compression stays, but nothing new is lost. The sensor's 12 bits are not used: the 8-bit camera preview is converted.
Which apps open TGA files?
Unreal Engine, Unity, Blender, Photoshop, GIMP and Substance tools. It does not open in web browsers.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.