What is the best source format to upload for highest-quality ICO output?

PNG is the best choice because it supports transparency and lossless compression. Upload the largest, cleanest version of your icon artwork — Deliteful uses high-quality resampling to generate the embedded sizes.

Will transparent backgrounds in my PNG be preserved in the ICO?

Yes. Transparency is preserved where the ICO format supports it. Icons with transparent backgrounds will render correctly on any Windows desktop or taskbar theme.

Can I batch convert multiple icon files for a single client project?

Yes. Batch upload supports up to 50 images per job or 2GB total. Each input file produces its own ICO output, making it straightforward to deliver a full icon set in one run.

Can I choose which sizes are embedded in the ICO?

No. The tool generates ICO files with all standard Windows icon sizes automatically. Custom or single-size output is not supported.

Package Your Icon Artwork Into a Windows ICO File

A client hands off a Windows desktop application project and needs an ICO file that holds up at every size — from a tiny 16px file explorer thumbnail to a crisp 256px high-DPI shortcut. Exporting multi-size ICOs from design tools is tedious and error-prone. Deliteful converts your finished artwork directly to a properly structured Windows ICO in one step.

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Graphic designers typically finish icon work in PNG at one or two sizes and then face a manual export pipeline: open each size in an image editor, export to BMP or PNG at each standard Windows dimension, combine in a specialized ICO tool, and verify the output. This process takes longer than the design itself and introduces resampling inconsistencies across sizes. Deliteful handles the entire pipeline from a single source image — resizing using high-quality resampling and embedding all standard sizes into one ICO file.

The tool accepts PNG, JPG, JPEG, and WebP inputs up to 50MB. Transparency is preserved where the ICO format supports it, so PNG artwork with transparent backgrounds carries through correctly. For designers delivering multiple icon assets — app icon, installer icon, document type icon — batch upload processes up to 50 files in one job. Each source image produces one ICO file in the output.

How it works

1
Create your free account
Sign in with Google to create a Deliteful account — takes about 3 clicks and no payment is required.
2
Upload your icon artwork
Upload your finished PNG, JPG, JPEG, or WebP icon files, individually or as a batch of up to 50.
3
Download client-ready ICO files
Each uploaded image produces one multi-size ICO file ready for handoff to your client or developer.

Frequently asked questions

What is the best source format to upload for highest-quality ICO output?: PNG is the best choice because it supports transparency and lossless compression. Upload the largest, cleanest version of your icon artwork — Deliteful uses high-quality resampling to generate the embedded sizes.
Will transparent backgrounds in my PNG be preserved in the ICO?: Yes. Transparency is preserved where the ICO format supports it. Icons with transparent backgrounds will render correctly on any Windows desktop or taskbar theme.
Can I batch convert multiple icon files for a single client project?: Yes. Batch upload supports up to 50 images per job or 2GB total. Each input file produces its own ICO output, making it straightforward to deliver a full icon set in one run.
Can I choose which sizes are embedded in the ICO?: No. The tool generates ICO files with all standard Windows icon sizes automatically. Custom or single-size output is not supported.

Create your free Deliteful account with Google and deliver Windows-ready ICO files to your clients without the manual export pipeline.