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.
Drop HDR files here or click to browse
Supports batch selection — convert hundreds of files
HDR
→ ICO
ZIP
0 files
Converting
0 / 0
✓ Conversion completed!
All files converted successfully. Click Download ZIP to save them.
Why convert HDR to ICO?
Because HDR files use lossless compression and 32-bit float, they are not ideal for Website favicons and app icons. Converting them to ICO (lossless, 32-bit) solves this. convert.contextual.raster_to_raster
Technical comparison: HDR vs ICO
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
When you need transparency support – convert from HDR to ICO
To reduce image file size by up to 80% without visible quality loss (HDR → ICO)
For archiving old HDR images in a future‑proof, well‑supported format (ICO)
Bulk processing an entire folder of HDR screenshots to ICO for documentation
💡 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
No watermarks, no ads, no branding. Completely clean output.
Typically 1‑2 seconds per 5 MB image. Total ~2‑3 minutes for 100 files.
Yes. Works on any device with a modern browser (Chrome, Safari, Firefox).
The converter will skip unreadable files and show an error. Only valid HDR images are processed.