Why does the AI change the face even when I only asked to change the background?
Because the model re-renders the entire photo on every edit, not just the region you described. Anything you didn't name as "keep this the same" is treated as open to reinterpretation, and faces show the smallest changes most visibly.
What's the exact wording I should use to protect the face?
Name the parts directly: "keep her face, facial features, expression, hair and skin tone exactly as they are." A specific list holds better than a generic "don't change anything else."
Does this work for group photos with several faces?
Yes, but name it for the group: "keep everyone's face and expression exactly as they are." With four or more people, running the edit at higher resolution or in Pro mode gives the model more detail to hold onto per face.
Why does cropping in tighter help?
A face that's a small part of the overall image has fewer pixels of information for the model to preserve, so small drifts are more likely. Cropping closer to the person before editing gives the face more relative detail to hold onto.
Can I fix a face that's already drifted in a finished edit?
Not reliably by editing the already-drifted result further — each additional pass re-renders again and can drift more. Go back to the original photo and re-run the edit with an explicit preservation clause instead.
Is this free to try?
Yes. EditThisPic gives one free Fast edit per week per IP with no signup. Paid packs start at $4.99 for 10 edits.
How much does EditThisPic cost?
You get 1 free edit per week — no account needed. After that, one-time credit packs start at $4.99 for 10 edits, valid 12 months, no subscription. Power users who edit daily can pick Studio Membership, a monthly workspace at $49.99/mo for 300 edits. Purchased downloads are clean with no watermark.