Can I convert Radiance HDR to PDF on iPhone, Android, Mac or Windows?

Yes. ConvertPixels works in Safari, Chrome, Edge and Firefox on any device, so you can convert Radiance HDR to PDF on your phone or computer without installing an app.

Is there a free HDR to PDF converter with no sign-up?

Yes, this one. Converting HDR to PDF on ConvertPixels is free, with no sign-up, no watermark and no daily cap. Convert up to 30 files per batch, each up to 50 MB.

Can I convert HDR to PDF without losing quality?

Yes. The PDF contains your image as it is, so it looks exactly like the HDR. (It can't add back detail the original never had.)

Can I batch convert HDR to PDF?

Yes. Add up to 30 HDR files and convert them in one batch. You can even choose a different output format for individual files, then download them separately or together as a ZIP.

Is it safe to upload HDR files to ConvertPixels?

Yes. Uploads use an encrypted connection and are processed automatically - nobody views them. Your originals are deleted straight after conversion and the results within an hour, or instantly if you click "Delete from server now".

Convert

Radiance HDR to PDF Converter

Convert Radiance HDR images to PDF online in seconds - free, with no sign-up and no watermark. Batch convert up to 30 files and download them together as a ZIP.

Free
No sign-up
No watermark
Private by design

Choose filesor drag and drop files hereUp to 30 files · 50 MB each

Image Converter

How to use it

1
Drop your Radiance HDR files onto the converter
2
Press Convert to turn them into PDF
3
Download your PDF images one by one or as a ZIP

Radiance HDR to PDF

Why convert HDR to PDF?

The main difference: HDR is a lossless format, while PDF is a document format. PDF is supported almost everywhere; HDR isn't. PDF can have a transparent background, HDR can't.

Works on every device

Plenty of apps and websites can't read HDR (none). A PDF copy opens on any phone, tablet, computer or browser, so you can view, upload or send the picture without hunting for special software.

Supports transparent backgrounds

PDF can hold a transparent background. Convert your image first, then cut out the background or place it on top of other designs.

One file to print, email or submit

A PDF looks identical on every screen and printer, and it's the format most application forms, schools and offices want.

Radiance HDR vs PDF: what's the difference?

Property	Radiance HDR	PDF
Compression type	Lossless (exact pixels, larger files)	Document (pages can hold images, text and vectors)
Transparent background	No	Yes
Animation	No	No
Where it opens	None	All browsers and devices
Used for	3D lighting (HDRI environment maps) and visual effects	Documents, printing, forms and sharing several pages as one file

What is an Radiance HDR file?

Radiance HDR (.hdr) is a high dynamic range format that stores the real brightness of a scene, far beyond what a normal photo can hold. It's used for HDRI environment maps that light 3D scenes, and in visual effects.

HDR files look flat or blown out in ordinary viewers because screens can't show that range directly - they need tone mapping, which converting to JPG or PNG applies.

How to open an Radiance HDR file

Photoshop, GIMP, Blender, Affinity Photo and most 3D software open .hdr files. Mac Preview shows a basic preview. Convert to JPG or PNG to get a viewable, shareable image.

Extensions: .hdr, .pic
Range: High dynamic range (32-bit float)
Best for: HDRI lighting, visual effects
Also called: RGBE

What is a PDF file?

PDF (Portable Document Format) was created by Adobe in 1993 to make documents look identical on every screen and printer. A PDF can contain text, vector graphics and images across any number of pages.

It's the standard for forms, contracts, resumes, school assignments and anything you print or submit. Turning photos and scans into a PDF bundles them into one tidy, universally readable file.

How to open a PDF file

Every web browser opens PDFs, as do Mac Preview, the Files app on iPhone and the free Adobe Acrobat Reader on Windows, Mac and Android. To get pictures out of a PDF, convert its pages to JPG or PNG.

Extension: .pdf
Contains: Text, vectors and images
Pages: One or many
Best for: Documents, forms, printing