ICO Generator

Generates ICO files from images or SVGs with automatic resizing to standard icon sizes for Windows, macOS, and web favicons.

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About This Tool

This tool converts image or vector inputs into ICO files, supporting multi-size icon packs that are ready for Windows, macOS, and web usage. Users supply a source asset (SVG or bitmap), select target sizes, and specify optional color depth and PNG fallbacks. The generator rasterizes vector inputs to precise pixel dimensions and packs all sizes into a single ICO file or a folder of per-size resources for developers and product teams. The process is deterministic and reproducible, enabling batch pipelines for apps, installers, or branding assets.
Conceptually, the system decouples vector/raster input from the output container. For SVGs, it renders at each requested size with anti-aliasing. For bitmap inputs, it scales with high-quality resampling. The ICO pack then embeds the set of images in commonly used color depths and formats; a PNG fallback can be included to improve compatibility on platforms that do not render embedded PNGs in ICOs. The result is a single ICO file plus optional per-size PNGs available for direct use as favicons.
The tool is beneficial for developers, designers, and teams shipping software or websites who need consistent branding across Windows tiles, installers, and web favicons. The primary value is automation of multi-size packing, predictable outputs, and avoidance of manual image editing. Unique differentiators include batch processing, vector-to-ICO conversion, automatic size generation, and compatibility guarantees across platforms.

How to Use

  1. Provide input image or SVG file.
  2. Specify target ICO sizes (e.g., 16,32,48,64,128,
  3. .
  4. Choose color depth and enable PNG fallback if needed.
  5. Generate to produce ICO and per-size assets.
  6. Download outputs and verify naming.
How to use online ico generator

Frequently Asked Questions

Find Quick Answers

What inputs are supported?
The tool accepts raster images (PNG, JPEG, GIF) and vector SVGs. SVG inputs are rasterized at all requested sizes, ensuring crisp output without font embedding.
Which sizes are generated by default?
Default includes common Windows ICO sizes: 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256. Additional sizes can be requested in batch mode.
Can transparency be preserved?
Yes. Transparent areas in input images or SVG shapes are preserved in the ICO outputs, and alpha channels are encoded in the PNG fallbacks where applicable.
Is this tool suitable for branding across platforms?
Yes. The generated ICO pack supports multi-platform usability, bundling Windows icons with macOS and web favicon variants to maintain consistent branding.

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