HDR Efex Pro 2
HDR Efex Pro 2 is a macOS HDR photo editing app in DxO’s Nik Collection for merging bracketed exposures and tone-mapping images.
What is HDR Efex Pro 2?
HDR Efex Pro 2 is a photo editing app for creating high dynamic range images from multiple exposures or from a single photo. It is part of the Nik Collection by DxO and is aimed at photographers who want to recover shadow and highlight detail, balance difficult lighting, and create stylized HDR looks. On Mac, it is commonly used as a plug-in alongside Adobe Photoshop, Lightroom Classic, and related photo workflows rather than as a general-purpose image organizer. The app provides preset-based starting points, manual tone and contrast controls, and local adjustment tools for refining different parts of an image. It fits best into editing workflows for landscape, architecture, interior, and real estate photography where bright windows and dark interiors often need careful balancing.
Key features
- Merge bracketed exposures into a single HDR image
- Tone-map a single photo to create an HDR-style look
- Start edits with built-in presets and refine them manually
- Adjust exposure, contrast, and tonal balance for highlights and shadows
- Make selective local adjustments to specific parts of an image
- Use it within compatible photo-editing workflows such as Photoshop and Lightroom Classic
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Safety overview
Status: Safe
HDR Efex Pro 2 is legitimate photo-editing software. Access to your pictures and photo folders is normal for its purpose, and removing it mainly affects Nik Collection HDR editing features and related plug-in workflows. As with any editor that can overwrite exports or create new rendered files, keep your originals backed up before making major batch edits.
Recommendation: Keep HDR Efex Pro 2 if you use Nik Collection for HDR photography or rely on it in a Photoshop or Lightroom Classic workflow. If you no longer use its HDR tools, you can remove it to free space and simplify your editing setup without affecting macOS itself.
Common paths
/Applications/HDR Efex Pro 2.app
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