MMegaConvert

Convert ICO to EXR

Free online ICO to EXR converter. No signup required.

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Max file size: 100 MB

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How to Convert ICO to EXR

Follow these simple steps to convert your file in seconds.

  1. 1

    Upload your .ico file

    Drag and drop your .ico file into the upload area, or click "Browse" to select it from your device. Your file is uploaded securely and processed on our servers.

  2. 2

    Click "Convert to EXR"

    Once your file is uploaded, press the convert button to start the ICO to EXR conversion process.

  3. 3

    Wait for the conversion to complete

    The conversion usually takes just a few seconds. You can see the progress in real time while your file is being processed.

  4. 4

    Download your converted .exr file

    When the conversion is finished, click the download button to save your new .exr file. The file is ready to use immediately.

Understanding ICO and EXR Formats

Learn about the source and target file formats to understand what happens during conversion.

Source Format

ICO Image

image/x-icon

ICO is an image format used to store icons in Microsoft Windows and for website favicons. A single ICO file can contain multiple images at different sizes and color depths, allowing the operating system or browser to select the most appropriate version. ICO files support sizes from 16x16 up to 256x256 pixels with up to 32-bit color depth including alpha transparency.

Advantages

  • Can store multiple resolutions and color depths in a single file
  • Universal support as favicons in all web browsers
  • Native format for Windows application and system icons

Limitations

  • Limited to relatively small image dimensions (max 256x256)
  • Larger file sizes than PNG when embedding multiple resolutions
  • Primarily Windows-centric with less relevance on other platforms

Common Uses

  • Website favicons displayed in browser tabs and bookmarks
  • Windows application and shortcut icons
  • Desktop and toolbar icons in Windows environments

Target Format

OpenEXR Image

image/x-exr

OpenEXR is a high dynamic range raster image format developed by Industrial Light & Magic for use in visual effects and motion picture production. It supports 16-bit and 32-bit floating-point pixels, multiple compression methods, arbitrary image channels, and multi-part files. OpenEXR is the industry standard for storing intermediate and final rendered frames in VFX pipelines.

Advantages

  • Industry-standard 16-bit and 32-bit floating-point precision for VFX work
  • Supports an arbitrary number of named channels and deep image data
  • Multiple lossless and lossy compression options including PIZ and DWAA

Limitations

  • Large file sizes even with compression, especially for 32-bit data
  • Not supported by web browsers or most consumer image viewers
  • Complex format specification requires specialized libraries to read and write

Common Uses

  • Visual effects compositing and intermediate renders in film production
  • 3D rendering output for lighting and shading passes
  • HDR image storage for professional color grading and post-production

Frequently Asked Questions

Common questions about converting ICO to EXR.

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