These positions are an editorial order for this task, not laboratory scores.
Start with the task
GIMP — Layer-based photo editing; darktable — RAW development & colour; RawTherapee — RAW development & colour; Squoosh — Image conversion & compression
Work through the checks
Test your own files, not only the examples in an advertisement. Include a difficult edge, a skin tone and a high-detail image. Check editability, export size, transparency, colour profiles and what remains available after a subscription ends. Compare the same crop at the final delivery size.
Before delivering
This is a documentation-based assessment, not a hands-on laboratory review. Product names and available options can change. Confirm the current plan, licence, regional stock and support terms with the provider before buying. No price, compatibility or performance guarantee is implied.
