Can I use the output ICO directly in a WiX toolset installer?

Yes. The generated ICO contains all standard Windows icon sizes and is directly compatible with WiX, NSIS, Inno Setup, and MSI packaging toolchains. Drop it into your source tree and reference it in your installer config as normal.

Is this a replacement for ImageMagick in a CI pipeline?

It is a replacement for the asset creation step, not a CI-native tool. The intended workflow is to convert source artwork upstream — when the design asset changes — and commit the resulting ICO to your repo alongside other build artifacts. This avoids the ImageMagick version dependency in CI entirely.

What happens if I upload a PNG with transparency?

Transparency is preserved where the ICO format supports it. Icons with transparent backgrounds will render correctly against any Windows desktop theme, installer background, or taskbar color.

Can I batch convert an entire icon asset directory?

Yes. Upload up to 50 PNG, JPG, JPEG, or WebP files in a single job (2GB total limit). Each input produces one ICO output, making it practical to regenerate a full icon set after a rebrand or design update in a single pass.

Produce Windows ICO Assets for Installers and Packaging Pipelines

Windows installer pipelines — WiX, NSIS, Chocolatey, Inno Setup — all require a valid multi-size ICO file for the application icon. When that asset is missing or malformed, builds fail or ship with blurry shortcuts. Deliteful converts PNG, JPG, JPEG, or WebP source images into correctly structured Windows ICO files without adding tooling to your pipeline.

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ICO generation is a recurring friction point in Windows packaging workflows. The source artwork usually exists as a PNG in a design repo, but WiX and MSI toolchains require an ICO with embedded sizes — typically 16, 32, 48, and 256px — for the installer UI, desktop shortcut, and Add/Remove Programs entry. Generating this with ImageMagick requires a non-obvious multi-step command that varies by version, and relying on a developer workstation tool means the process is not reproducible without that dependency in CI. Deliteful provides a fast, dependency-free conversion path for the asset creation step upstream of the build.

The tool processes up to 50 images per batch job (2GB total limit), produces one ICO per input file, preserves transparency from PNG sources, and applies high-quality resampling across all embedded sizes. For teams managing multiple branded products or maintaining separate icons for app window, installer, and document type associations, batch processing covers the full asset set in one pass. The resulting ICO files drop directly into your WiX source tree, Chocolatey package directory, or wherever your build toolchain expects them.

How it works

1
Create your free account
Sign in with Google to create a Deliteful account — no credit card or setup required.
2
Upload your source icon images
Upload the PNG, JPG, JPEG, or WebP artwork from your design repo or asset store, up to 50 files per batch.
3
Download and commit ICO files
Each input produces one multi-size ICO file ready to add to your installer source tree or packaging directory.

Frequently asked questions

Can I use the output ICO directly in a WiX toolset installer?: Yes. The generated ICO contains all standard Windows icon sizes and is directly compatible with WiX, NSIS, Inno Setup, and MSI packaging toolchains. Drop it into your source tree and reference it in your installer config as normal.
Is this a replacement for ImageMagick in a CI pipeline?: It is a replacement for the asset creation step, not a CI-native tool. The intended workflow is to convert source artwork upstream — when the design asset changes — and commit the resulting ICO to your repo alongside other build artifacts. This avoids the ImageMagick version dependency in CI entirely.
What happens if I upload a PNG with transparency?: Transparency is preserved where the ICO format supports it. Icons with transparent backgrounds will render correctly against any Windows desktop theme, installer background, or taskbar color.
Can I batch convert an entire icon asset directory?: Yes. Upload up to 50 PNG, JPG, JPEG, or WebP files in a single job (2GB total limit). Each input produces one ICO output, making it practical to regenerate a full icon set after a rebrand or design update in a single pass.

Create your free Deliteful account with Google and generate Windows-ready ICO files for your installer pipeline without adding build dependencies.