Free online Radiance HDR to OpenEXR converter. Files are processed locally in your browser — no uploads, 100% private.
Drop your .HDR file here
or click to browse from your device
100% browser-based — no server uploads, no cloud processing
Free forever — no account or subscription required
Supports batch conversion for multiple files at once
Works on any device — desktop, tablet, and mobile
Results available in seconds — no server queue or wait time
Files are cleared immediately after processing for maximum privacy
High Dynamic Range RGBE format for 3D environments and light probes
Industrial Light & Magic OpenEXR — industry-standard HDR format
Source: High Dynamic Range RGBE format for 3D environments and light probes
Output: Industrial Light & Magic OpenEXR — industry-standard HDR format
100% browser-based processing — files never leave your device
Free with no file limits, watermarks, or registration required
Binary format not human-readable or version-controllable
Quality depends on compression settings
Large files slow down page load times
Web publishing and social media sharing
Email attachments and cloud storage
Print production and graphic design workflows
App development and UI asset creation
Always keep original files before converting — some conversions are irreversible
Use WebP for web delivery — 25–35% smaller than JPEG at equal visual quality
Batch convert multiple files at once to save time using our bulk tools
Match format to use case: JPEG for photos, PNG for graphics, SVG for logos
Drag & drop your file or click to browse
Files are processed instantly in your browser
Save your converted or processed file
Upload your HDR file using the drop zone above. Your file is instantly converted to EXR format right in your browser — no server upload, no waiting.
Completely. Our converter processes your HDR file 100% in your browser using client-side code. It never leaves your device or touches any external server.
It depends on the formats. Converting from lossless to lossy (e.g. PNG to JPEG) may reduce quality. Converting lossless-to-lossless (e.g. PNG to WebP lossless) preserves all quality.
Free, instant, and 100% private. Your files are processed locally in your browser.