ICO to PPM Converter

Convert ICO to PPM instantly — free web-based tool

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Full Resolution

Convertio extracts the highest resolution image from your ICO container and converts it to PPM — preserving maximum detail.

Your Files Stay Safe

ICO files are erased from servers right after conversion completes. PPM downloads are available for 24 hours, then automatically removed.

Works Everywhere

Convert ICO to PPM from any device — Windows, Mac, Linux, iOS, or Android. All you need is a browser and internet connection.

How to convert ICO to PPM

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose ppm or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your ppm file right afterwards

About formats

ICO is the icon file format for Microsoft Windows), introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.
Developer: Microsoft
Initial release: 1985
PPM (Portable Pixmap) is the full-color member of the Netpbm image format family, created by Jef Poskanzer in 1988 as part of the Pbmplus toolkit for Unix systems. PPM stores RGB color images where each pixel contains three values (red, green, blue) ranging from 0 to a specified maximum, typically 255 for 8-bit-per-channel or 65535 for 16-bit-per-channel color. The format exists in ASCII (magic number P3), where pixel values are written as decimal numbers in row-major order, and binary (magic number P6), where values are stored as raw bytes for compact representation. Both variants begin with a plain-text header: magic number, width, height, and maximum color value. PPM completes the Netpbm trio alongside PBM (monochrome) and PGM (grayscale), serving as the universal color image intermediate in the convert-process-convert pipeline that defined Netpbm's approach to format interoperability. One advantage is absolute simplicity — PPM requires no compression libraries, container parsing, or metadata handling, making it the easiest full-color format to implement from scratch in any programming language. The format's widespread adoption in scientific computing and computer graphics education is another practical strength: PPM serves as a standard I/O format for ray tracers, image processing coursework, and visualization tools where implementation simplicity outweighs file size concerns. PPM is supported by ImageMagick, GIMP, and virtually all image processing libraries.
Developer: Jef Poskanzer
Initial release: 1988

Frequently Asked Questions

Why convert ICO to PPM?

PPM gives you a simple color image from your icon — widely used in Unix toolchains, academic projects, and batch processing with Netpbm utilities.

What software reads PPM format?

You can open PPM files with GIMP, Netpbm tools, IrfanView, XnView. Free alternatives are available for every platform.

What happens to my uploaded files?

Your ICO files are automatically deleted right after conversion. The resulting PPM files remain available for download for 24 hours, then they are permanently removed.

Which icon size gets used from my ICO?

Convertio extracts the highest resolution image stored in your ICO file for conversion to PPM — giving you the best quality available in the icon.

Does this work on mobile devices?

Yes — the ICO to PPM converter works in any mobile browser on iOS and Android. No app installation is needed — just open convertio.tools and upload your file.

Is the conversion process fast?

ICO to PPM conversion usually finishes in a few seconds. Larger files may take slightly longer, but the cloud-based processing keeps things efficient.

ICO to PPM Quality Rating

5.0 (13 votes)
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