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. convert.dynamic_reason_closing.closing_13

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)
Max colors	floating point	16.7M+
MIME type	`image/vnd.radiance`	`image/png`
Category	Raster image	Raster image
Year gap	7 years apart in technical development
Best for	High dynamic range photography	Web graphics with transparency
Estimated size change	Typically 10%-20% smaller

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

convert.usecases_groups.group_14.0

convert.usecases_groups.group_14.1

convert.usecases_groups.group_14.2

convert.usecases_groups.group_14.3

💡 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

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.

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

Are there any watermarks added to my converted PNG images?

How long does it take to convert 100 HDR files to PNG?

Can I convert HDR to PNG on my phone or tablet?

What if my HDR file is corrupted or encrypted?

Convert other formats to PNG

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