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HDR to APNG — Online Image Converter
Convert HDR to APNG online. Private, client-side — no uploadrequired. Fast batch converter.
Convert HDR to APNG
About HDR to APNG
Convert HDR to APNG. HDR (Radiance RGBE) stores high-dynamic-range lighting with 32 bits per pixel. APNG extends PNG with animation support. Animations stay animated where the target supports it..
Why convert HDR to APNG?
- Larger files than lossy shares with APNG lossless quality.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
HDR vs APNG
| Animation | No | Yes |
|---|---|---|
| Transparency | No | Yes |
| Compression | lossless high dynamic range | lossless |
| Typical use | HDR (Radiance RGBE) stores high-dynamic-range lighting with 32 bits per pixel. | APNG extends PNG with animation support. |
When not to convert HDR to APNG
- Skip APNG for the smallest share: lossless output stays large, so prefer a lossy target when sending HDR files.
- No motion to preserve: HDR is a still, so pick APNG for size or compatibility rather than animation.
Limits
Starting point: HDR - HDR (Radiance RGBE) stores high-dynamic-range lighting with 32 bits per pixel. Tone mapping compresses highlights into display range on export. Animations stay animated where the target supports it. Export APNG from HDR at matched dimensions; every pixel maps across, so large sources stay large.
How conversion works
Conversion runs entirely in your browser with the WASM image engine. Files never leave your device.
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FAQ
How do I convert HDR to APNG?
Drop your HDR file onto this page, adjust quality and optional dimensions, then click Convert. The result downloads as APNG instantly. All processing runs in your browser.
Will I lose quality converting HDR to APNG?
This format is lossless - converting preserves all pixel data at maximum quality.
How do you store my files?
We do not store any processed images. All conversion happens entirely in your browser using WebAssembly.