100% Free No Upload Bulk Conversion

Bulk HDR to ICO Converter — Free, No Upload

Convert multiple HDR files to ICO instantly — all in your browser. No file limits, no watermarks, and completely private.

HDR ICO  ·  ZIP
Bulk HDR → ICO Converter
Select files, convert, download ZIP — all locally
HDR Support is coming soon — we are working on it.
I browser non possono generare in modo affidabile un vero file ICO. Il file scaricato potrebbe non essere un ICO valido.

Drop HDR files here or click to browse

Supports batch selection — convert hundreds of files

HDR → ICO ZIP
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Converting 0 / 0
✓ Conversion completed! All files converted successfully. Click Download ZIP to save them.

Why convert HDR to ICO?

convert.dynamic_reason.template_5 convert.dynamic_reason_closing.closing_5

Technical comparison: HDR vs ICO

PropertyHDRICO
Full nameHigh Dynamic Range ImageIcon Image Format
Compression Lossless Lossless
Color depth32-bit float32-bit
Transparency No Yes
Web support No Yes
Developed byRadiance / Greg Ward (1989)Microsoft (1985)
Max colorsfloating point16.7M
MIME typeimage/vnd.radianceimage/x-icon
Category Raster image Raster image
Year gap 4 years apart in technical development
Best for High dynamic range photography Website favicons and app icons
Estimated size change Typically 10%-20% smaller

How to use — 3 simple steps

1
Select your HDR files
Drag & drop or click to choose multiple HDR images. No file size restrictions.
2
Start the conversion
Click "Convert to :to" — your files are processed locally using WebAssembly. No upload, no waiting.
3
Download ZIP archive
All converted ICO files are bundled into a single ZIP. One click, everything saved.

Popular use cases for HDR → ICO

convert.usecases_groups.group_7.0

convert.usecases_groups.group_7.1

convert.usecases_groups.group_7.2

convert.usecases_groups.group_7.3

💡 Pro tips

  • Use the ZIP download to get all converted files in a single click
  • All processing is private — files are never uploaded to any server

Frequently Asked Questions

convert.faq_groups.group_11.0.a
convert.faq_groups.group_11.1.a
convert.faq_groups.group_11.2.a
convert.faq_groups.group_11.3.a
Applicazione offline!