Free online ICO to TGA converter

A TGA file may be required by a game engine, 3D application, or texture pipeline that does not accept Windows icon files. Converting an ICO also provides an editable raster image or preserves one selected icon size for archiving and reuse.

What the ICO format is

ICO is the Windows icon format used for application icons, shortcuts, folders, and some website favicons. A single ICO file can contain multiple raster images at different dimensions and color depths, commonly including 16×16, 32×32, 48×48, and 256×256 versions. Windows applications, icon editors, graphics software, executable resources, icon packs, and web projects commonly use or contain ICO files. Modern ICO entries can also contain PNG-compressed image data.

What the TGA format is

TGA, also called Truevision TGA or TARGA, is a raster format used in game development, 3D rendering, compositing, and texture pipelines. It supports color images with up to 24-bit RGB data and 32-bit RGBA data, allowing an alpha channel for transparent pixels. TGA can use uncompressed storage or lossless RLE compression; RLE usually reduces size without changing pixels, but some older software accepts only uncompressed files.

How to convert ICO to TGA

The conversion produces one TGA image, so a multi-image ICO requires choosing the icon entry or size to export. For a quick conversion, use the converter on 101convert.com: upload the ICO, select TGA, start the conversion, and download the result. If the ICO contains several sizes, check which entry the service uses; a desktop tool gives more control over that choice.

Using ImageMagick

ImageMagick is suitable for precise, repeatable, or batch conversions.

1. Install ImageMagick and confirm that the magick command is available.
2. Inspect the images stored in the icon with magick identify icon.ico. The output lists the available entries and their dimensions.
3. Convert a selected entry, such as the first one, with magick icon.ico[0] output.tga. Replace [0] with the required frame index.
4. Keep transparency when the source contains an alpha channel with magick icon.ico[0] -alpha on output.tga. ImageMagick normally writes a 32-bit TGA when the image has RGB plus alpha.
5. If the receiving application rejects RLE-compressed TGA files, use magick icon.ico[0] -compress none output.tga.

Check the result with magick identify output.tga and verify its dimensions, color type, and alpha channel.

Using GIMP

1. Open the ICO through File → Open. When the file contains several images, GIMP may import them as separate layers.
2. Select the layer with the required dimensions and hide or remove other layers before exporting.
3. Choose File → Export As, enter a filename ending in .tga, and select Export.
4. Retain the alpha channel if transparent pixels are required. Enable RLE compression unless the destination specifically requires uncompressed TGA.

Quality and compatibility

• Choose the source size carefully. ICO is a container for several possible images, while a TGA normally contains one raster image. Enlarging a 16×16 entry creates pixelation; use the largest suitable source or the dimensions required by the destination texture pipeline.
• Check transparency. A 24-bit RGB TGA has no alpha channel. Use a 32-bit RGBA output when the transparent background must remain transparent, and confirm that the target application reads TGA alpha data.
• Inspect converted edges. Indexed ICO images, PNG-compressed entries, and transparent pixels can appear differently in older decoders. Check antialiased edges and the RGB values beneath transparent areas before importing the file.
• Expect different file sizes. TGA is generally larger than a PNG containing the same pixels, even when RLE compression is enabled. Use uncompressed output only when compatibility requires it.
• Check orientation if necessary. TGA files can store different image origins, and some older texture tools interpret the vertical orientation incorrectly. If the image appears upside down, change the TGA export origin or flip the image vertically before export.