Convert PEF to TIFF — Lossless Archive
PEF is Pentax's proprietary RAW format. TIFF is the format archives and print workflows actually expect: lossless, colour-managed, and readable by essentially every professional imaging tool without vendor software.
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Modern format with excellent compression. Limited browser support.
Apple's format. Excellent quality at small sizes.
Lossless format. Large files, ideal for print/archival.
256 colors max. Best for simple graphics.
Uncompressed bitmap. Very large files.
Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.
Same format? You might want to compress instead.
SSIM-optimized — finds the lowest file size at your chosen visual fidelity.
Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.
Resize tool → Live preview, percentage scaling, and dimension presets.
Tip: Use PNG or WebP for transparent output. Standalone tool →
Lossless format — files can be large
GIF is limited to 256 colors
Best for logos, icons, and line art. Photos produce stylized results.
BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.
Leave empty for all pages. Multi-page PDFs produce a ZIP.
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PEF vs TIFF Comparison
| Feature | PEF | TIFF |
|---|---|---|
| Full Name | Pentax Electronic Format | Tagged Image File Format |
| Lossy Compression | ❌ | ✅ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ❌ |
| Browser Support | None — RAW editors only | No browser support (desktop apps only) |
| Color Depth | 14-bit per channel | 16.7M+ (up to 48-bit) |
| Typical Use | Pentax DSLRs, which can also write DNG | Print, archival, professional photography, scanning |
| Year Introduced | 2003 | 1986 |
Why Convert PEF to TIFF?
TIFF is lossless and universally read by imaging and document systems, which is exactly what an archive needs: the copy has to outlast the software that made it. Note that Pentax bodies can write either PEF or DNG straight out of the camera, so a shooter who picked PEF chose the proprietary option deliberately.
How to Convert PEF to TIFF
Upload your PEF file. Files up to 50 MB are supported.
The RAW is demosaiced and written to TIFF with lossless LZW compression.
Download the TIFF. Every professional imaging tool will open it without Pentax software.
Quality Note
The TIFF is written losslessly with LZW compression, so it is identical to the decoded image. Expect roughly three times the PEF's size, since RAW is itself compressed.