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Image Conversion

Convert ICO to PEF Online — Free

Fast, free ICO to PEF converter. No registration required.

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How to Convert

1

Upload your .ico file by dragging it into the upload area or clicking to browse.

2

Choose your output settings. The default settings work great for most files.

3

Click Convert and download your .pef file when it's ready.

What is ICO?

ICO is the image format used for icons in Windows. It can contain multiple image sizes in a single file for different display contexts.

Format Details

Full Name
Windows Icon
Extension
.ico

Key Features

  • Windows icons
  • Multiple sizes
  • Favicon support
  • Transparency

What is PEF?

PEF is Pentax's RAW image format used in K-series cameras. It stores unprocessed sensor data with full quality for post-processing flexibility.

Format Details

Full Name
Pentax Electronic File
Extension
.pef

Key Features

  • Pentax cameras
  • RAW quality
  • Full sensor data
  • Lossless option

ICO vs PEF

FeatureICOPEF
Full NameWindows IconPentax Electronic File
Extension.ico.pef
Best ForWindows iconsPentax cameras

Frequently Asked Questions

Converting between lossless formats (PNG, BMP, TIFF) preserves perfect quality. For lossy formats like JPG and WebP, you can adjust the quality slider to control compression. Default settings prioritize visual quality.
Transparency is preserved when converting to formats that support it (PNG, WebP, TIFF, GIF). If the target format doesn't support transparency, a white background is applied.
Yes. Upload your HEIC files and convert to JPG, PNG, or WebP instantly. Perfect for making iPhone photos compatible with any device or platform.
No resolution limit. We handle images of any size — from small icons to high-resolution photos and print-ready images.
Pro users can batch convert multiple images at once. Free users can convert one image at a time. All conversions are processed on our servers, so even large files convert quickly.

Related Conversions

ICO to JPGICO to PNGICO to WebPICO to HEICICO to GIFICO to BMPICO to TIFFICO to AVIF