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Tech riderRev. 2 Oct 2026

HDRMerge

Ch 086.9of 20 HDR Software
  1. 1Runs onLinux, Mac, Windows
  2. 2CostsFree plan
  3. 3HDR merge modeboth
  4. 4Batch processingYes
  5. 5RAW file supportYes
  6. 6HDR output formatsDNG 1.4
  7. 7Supported platformsWindows, macOS, Linux
7 lines stated Written from the maker's own pages: jcelaya.github.io
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The HDRMerge homepage

Overview

HDRMerge is ranked #8 of 20 in HDR software on Specifiction. It runs on Linux, macOS, Windows. There is a free plan.

HDRMerge plans and pricing

All plans
Free Free GPL-3.0-or-later software jcelaya.github.io · 2 Oct 2026

Compared on HDR software

Free plan
Yesjcelaya.github.io
HDR merge mode
bothjcelaya.github.io
Batch processing
Yesjcelaya.github.io
RAW file support
Yesjcelaya.github.io
HDR output formats
DNG 1.4jcelaya.github.io
Supported platforms
Windows, macOS, Linuxjcelaya.github.io

Facts

Purpose
HDRMerge creates raw images with extended dynamic range by merging exposure-bracketed raw files or multiple exposure-bracketed frames in a single raw file.jcelaya.github.io · 2 Oct 2026
Output
It outputs DNG 1.4 images with floating-point data, using less noisy input pixels to preserve shadow detail.jcelaya.github.io · 2 Oct 2026
Ghost removal
Its graphical interface lets users edit the merge mask to remove ghosts caused by moving objects between exposures.jcelaya.github.io · 2 Oct 2026
Alignment and cropping
HDRMerge can align small translations and crop output to the area shared by the input raw images.jcelaya.github.io · 2 Oct 2026
Input compatibility
Input images must have matching size, orientation, Bayer pattern, and black and white levels, which the manual says mostly means they were made with the same camera.jcelaya.github.io · 2 Oct 2026
Integrations
The maker says RawTherapee, darktable, and recent Adobe products support the floating-point DNG formats HDRMerge produces.jcelaya.github.io · 2 Oct 2026
Tone mapping
HDRMerge handles raw exposure merging; its maker says the resulting image can be tone-mapped later in another program that supports high-dynamic-range raw DNG images.jcelaya.github.io · 2 Oct 2026
Platforms
The downloads section lists a Windows installer and macOS DMG for the stable release, and a Linux AppImage for development builds.jcelaya.github.io · 2 Oct 2026
Support
The maker directs users to GitHub to file bugs and feature requests and asks them to include the HDRMerge version, full error messages, and a link to sample raw files.jcelaya.github.io · 2 Oct 2026
License
HDRMerge is free software distributed under the GNU General Public License, version 3 or any later version.jcelaya.github.io · 2 Oct 2026
Intended workflow
The maker describes HDRMerge as a way to bring merged HDR images into a normal raw development workflow.jcelaya.github.io · 2 Oct 2026

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Where it ranks on Specifiction

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