All HDRIs are licensed as CC0 and can be downloaded instantly, giving you complete freedom.
No paywalls, email forms, or account systems.

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Here you can find a different HDR maps category to download by Greg Zaal, creator of HDRI Haven, who has decided to download the download in all HDRI maps for free for everyone, without even the need to register.
Very high-resolution HDRI maps with a dynamic range up to 26 EV.

What is the HDRI?

HDRI is a High Dynamic Range Image that contains a large amount of data (usually 32 bits per pixel per channel), in the 3d scene you can use the “Dynamic range” to control the brightness of the image. Also, the HDRI is a panoramic hdri photography, covering 360 angles from the point of view of the viewer.