Colourise a Photo — Pro, on our server
The spelling is British; the model is the same one either way. DDColour is spelled DDColor because its authors named it that, and it does not care which side of the Atlantic your photograph came from. What it does is predict the colour that most plausibly produced the grey values in front of it, region by region, having learned from a very large number of ordinary colour photographs. Hedges come back green, red-brick terraces come back brick, an overcast British sky comes back the flat pale grey-blue it usually is. Anything whose colour was a human decision — a school tie, a football strip, a front door — is a guess, because monochrome film destroyed the evidence and no amount of processing recovers it.
The UK GDPR question deserves a straight answer, so here it is. Colourising is a Cloud HD tool and Cloud HD is the one part of MiniPx that ever handles an image on a server. When you run it, your photograph is uploaded over an encrypted connection, stored by Cloudflare for the seconds or minutes it exists, processed on a Modal GPU, and deleted when the run finishes and in all cases within 24 hours. Both companies process it in the United States, and that transfer is covered by the safeguards set out in our privacy policy — standard contractual clauses, together with a data processing agreement with the GPU provider. The lawful basis is Article 6(1)(b) — performing the contract you paid for — and the file is never used to train anything. The detail, including the processing agreement behind it, is set out on the privacy and security page and in the privacy policy.
Everything else on the site stays on your machine. That is worth stating precisely rather than as a slogan: compressing, converting, resizing, cropping and the free on-device upscaler all execute in your browser, so for those tools there is no upload, no transfer and no image data for anyone to process. Cloud HD is opt-in, Pro-only, and visible — you switch it on, and the tool tells you which model ran. If you want the colour version larger for a print, colourise first and then use the upscaler; if the scan is over the 25 MB limit, the compressor will bring it under without leaving your device.
What it will not do, in plain terms. It does not repair damage: creases, foxing, tape marks and torn corners come back in colour, precisely where they were. It does not invert negatives — feed it a negative and it will faithfully colourise a negative. It does not resize, sharpen or denoise; the output is a PNG at exactly the resolution you supplied, up to 24 megapixels. And it does not know your family. For soft faces, the face restorer is the separate model, with an optional colourise step chained onto it; for the same tool written for American spelling and a slightly different set of questions, there is the old photos page.