100% Free No Upload Bulk Conversion

Bulk GIF to HDR Converter — Free, No Upload

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

GIF HDR  ·  ZIP
Bulk GIF → HDR Converter
Select files, convert, download ZIP — all locally

Drop GIF files here or click to browse

Supports batch selection — convert hundreds of files

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

Why convert GIF to HDR?

Introduced in 1987 by CompuServe, GIF was great for its time. But HDR (created in 1989 by Radiance / Greg Ward) offers lossless compression and 32-bit float – a massive leap forward. This conversion processes your files entirely in your browser using WebAssembly – no upload, no server, no privacy concerns. Perfect for sensitive or large batches.

Transparent areas will be filled with white background
Only the first frame of animated GIF files will be converted

Technical comparison: GIF vs HDR

PropertyGIFHDR
Full nameGraphics Interchange FormatHigh Dynamic Range Image
Compression Lossless Lossless
Color depth8-bit32-bit float
Transparency Yes No
Web support Yes No
Developed byCompuServe (1987)Radiance / Greg Ward (1989)
Best for Animated images and simple graphics High dynamic range photography

How to use — 3 simple steps

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

Popular use cases for GIF → HDR

Uploading GIF photos to social media after converting to HDR

Saving hard drive space by converting a batch of GIF images to HDR

Emailing high-quality images without attachment limits (use HDR)

Creating a backup copy of your GIF library in the more compatible HDR format

💡 Pro tips

  • If your image has transparency, consider converting to PNG instead to preserve it
  • 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 GIF images are processed.
Application offline!