HDR Merge Online

The tool loads all your exposures, reads every pixel and averages the red, green and blue values across the set. Detail that is dark in the underexposed frames and bright in the overexposed ones meets in the middle, giving a more even exposure than any single frame. The result is a standard 8-bit image saved as HDR_Merged.png.

Click the upload area or drag your bracketed images onto it, selecting all of them at once. The files appear in a list, and the Merge HDR button becomes active once at least two are loaded. Click it, and the tool blends the set and downloads HDR_Merged.png automatically. JPG and PNG files work best.

Two is the minimum, but three or more bracketed shots are recommended, typically spaced one or two stops apart, for example -2, 0 and +2 EV. Because the merge is an average, each frame carries equal weight, so a balanced set of brackets centered on the correct exposure gives the most natural result.

Yes. The tool does not align images or remove ghosting, so it works best with brackets shot on a tripod, with the same framing, focal length and image size. The output uses the dimensions of the first image. Moving subjects such as people, water or leaves will appear blended or doubled, so choose static scenes where possible.

It is a quick way to preview or produce a balanced blend of a static interior or exterior from tripod brackets, for example to check how a bright window view and a darker room combine. For final listing images, where window detail and color accuracy matter, you will usually refine the merged result further in your editor.

Yes. It is free, with no watermark and no software to install. All merging happens in your browser on your own device, and your photos are never uploaded. Before first use, you answer that you are a photographer and create or log into a free Imagen account; that one step unlocks every tool.