Can this photo be restored, or does it need capturing again first?
Restoration repairs what is still in the file. It cannot bring back what the copy lost. Drop the scan and this says which of the two you are looking at - before you pay anyone.
The photo is read on this page and never uploaded. That matters more here than on any other tool we have.
What it measures, and why those four things
Four numbers come off the file itself. Effective DPI is the pixel count divided by the print size you picked - the single number that decides whether there is anything to repair. Contrast range is the gap between the 5th and 95th percentile of brightness; when it collapses, that is fading. Sharpness is the variance of a Laplacian, the standard cheap blur signal. Glare is the largest connected patch of blown-out pixels, because a scattering of white specks is harmless and a single reflection is not.
What it deliberately does not try to detect
Scratches, tears, mould and a missing face are checkboxes, not detectors. A heuristic guesses at those and a person holding the print does not, so asking is simply more accurate - and it keeps the verdict honest rather than confident.
The line that matters
Everything on the repairable list is still in the pixels: fading, casts, scratches, stains. Everything on the re-capture list is missing from them: glare erased the emulsion under it, shake destroyed detail the print still has, and 90 dpi across a face never recorded one. No tool repairs the second kind - it can only invent a replacement, which for a photograph of a person is the failure, not the feature. That boundary is drawn in full in what restoration must never invent.
Once the capture is right: restoration repairs the damage, colorization does the same pass in colour, and the print size checker tells you how big the result can be printed. For what a box of prints costs either way, the cost calculator prices it both ways.
The damage is repairable. The face stays the face.
Restoration and colorization run at 10 credits a photo and your first two are free. A second tone is another thirty cents, so you can order the faithful version and a warmer one and keep the one that looks like the room you remember.