Free online OpenEXR→Radiance HDR converter. Fast, private, no sign-up.
If something is asking you for a Radiance HDR file and all you have is a OpenEXR, this page is the fix. Drop in your OpenEXR file (a .exr) and download a ready-to-use Radiance HDR file (a .hdr) — no software to install, no account to create, and no watermark on the output.
OpenEXR is an image format. Converting to or from it lets you use the same picture in apps and on platforms that expect a different format.
Radiance HDR is an image format. Converting to or from it lets you use the same picture in apps and on platforms that expect a different format.
You'll reach for a OpenEXR to Radiance HDR conversion whenever the other end expects Radiance HDR specifically — uploading somewhere, importing into software, or sharing with someone whose device prefers it. Under the hood the conversion runs on libvips and ImageMagick — the same libraries that power image pipelines across the web — so colour, transparency and metadata are handled correctly wherever the target format supports them.
You might be optimising images for a faster-loading page, exporting for a specific app or marketplace, or just making sure a colleague on a different device can open what you send.
Privacy is the default here. Your OpenEXR file is uploaded over an encrypted connection, converted, downloaded the moment it's ready, and then deleted automatically a short time afterwards. We never keep your files, never build a library of your content, and never make you sign up to download the result.
Ready? Use the converter above, or explore related conversions: turn OpenEXR into a different format, or convert another format into Radiance HDR. Everything on Convert Me Pls is free, unlimited and watermark-free.
Yes. Convert Me Pls is completely free with no sign-up, no file-count limits and no watermarks added to your output.
Your files are uploaded over an encrypted connection, converted, and then deleted automatically a short time afterwards. We never keep your files and never build a library of your content.
We use the best available encoders (libvips, ImageMagick and ffmpeg) at high-quality settings for the cleanest possible result.
Conversions run on our servers and support large files comfortably; very large media is processed in a streaming pipeline.