or choose files from your device
This conversion needs a HEIF/HEVC codec that is not available in this browser engine yet.
HEIF can contain multiple image representations with different roles. These are not automatically a timed animation. Selecting an image, preserving a collection or creating several outputs needs explicit engine support; neither a first-image choice nor an all-images export is implemented.
An animated HEIF has a timed sequence; HDR is a still-image destination in this workflow. A still export loses motion and timing. Frame choice, blending and disposal must be defined by the future engine; a first-frame export is not promised.
The source can carry HDR information and HDR has HDR-capable variants. Working radiometric values and display-referred HDR are different representations. Range, primaries, transfer function and signalling must be mapped explicitly; the future engine may instead produce SDR. HDR preservation is not promised by format support.
RLE preserves stored RGBE bytes; RGBE quantization is not exact storage of arbitrary float RGB. The .hdr format is distinct from the general concept of HDR photography. HDR can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
Source
High Efficiency Image File Format
An image container for individual pictures, collections and sequences. The codec inside determines compression.
Explore HEIF format →Target
Radiance HDR / RGBE
Radiance pictures with a shared exponent for high-dynamic-range lighting values.
Explore HDR format →HEIF can contain multiple image representations with different roles. These are not automatically a timed animation. Selecting an image, preserving a collection or creating several outputs needs explicit engine support; neither a first-image choice nor an all-images export is implemented.
An animated HEIF has a timed sequence; HDR is a still-image destination in this workflow. A still export loses motion and timing. Frame choice, blending and disposal must be defined by the future engine; a first-frame export is not promised.
The source can carry HDR information and HDR has HDR-capable variants. Working radiometric values and display-referred HDR are different representations. Range, primaries, transfer function and signalling must be mapped explicitly; the future engine may instead produce SDR. HDR preservation is not promised by format support.
Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
HEIF: Exif, XMP, ICC, NCLX → HDR: Radiance header, EXPOSURE, FORMAT. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.