100% Free No Upload Bulk Conversion

Bulk HDR to PNG Converter — Free, No Upload

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

HDR PNG · ZIP

Bulk HDR → PNG 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 → PNG ZIP

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✓ Conversion completed! All files converted successfully. Click Download ZIP to save them.

Why convert HDR to PNG?

Introduced in 1989 by Radiance / Greg Ward, HDR was great for its time. But PNG (created in 1996 by PNG Development Group) offers lossless compression and 48-bit – 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.

Technical comparison: HDR vs PNG

Property	HDR	PNG
Full name	High Dynamic Range Image	Portable Network Graphics
Compression	Lossless	Lossless
Color depth	32-bit float	48-bit
Transparency	No	Yes
Web support	No	Yes
Developed by	Radiance / Greg Ward (1989)	PNG Development Group (1996)
Best for	High dynamic range photography	Web graphics with transparency

How to use — 3 simple steps

Select your HDR files

Drag & drop or click to choose multiple HDR images. No file size restrictions.

Start the conversion

Click "Convert to :to" — your files are processed locally using WebAssembly. No upload, no waiting.

Download ZIP archive

All converted PNG files are bundled into a single ZIP. One click, everything saved.

Popular use cases for HDR → PNG

Make your HDR images viewable on any device – convert to PNG

Stop dealing with 'unsupported format' errors – use PNG instead of HDR

Batch rename and convert your HDR collection to PNG for a unified library

Improve your website's Google PageSpeed score by serving PNG images

💡 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

Typically 60-90% smaller for lossy PNG, or 20-40% for lossless PNG compared to uncompressed HDR.

PNG is supported by all modern browsers (Chrome, Firefox, Safari, Edge) if web_support is true. Check caniuse.com otherwise.

Only the first frame of animated GIF will be converted to PNG. For animation, use GIF or WebP.

PNG supports transparency? If yes, preserved. If not, transparent areas become white/black. Use PNG for transparency.

Bulk HDR to PNG Converter — Free, No Upload

Why convert HDR to PNG?

Technical comparison: HDR vs PNG

How to use — 3 simple steps

Popular use cases for HDR → PNG

💡 Pro tips

Frequently Asked Questions

How much smaller will my HDR file become after converting to PNG?

Which browsers support PNG images?

Can I convert animated HDR files?

What happens to transparent areas when converting HDR to PNG?

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