Your files never leave your device. All processing happens in your browser.
Open the Img Stop AI colorizer and add one or more black and white or sepia photos. The AI downloads once (about 110 MB), then predicts natural colours on your device. Adjust colour intensity and warmth, drag the before / after slider to compare, and download each photo or all of them as a ZIP.
About the Colorize Black and White Photos (AI)
The Img Stop colorizer turns black and white, sepia and faded monochrome pictures into colour photos with an AI model called DDColor. The model studies the whole scene – skin, sky, grass, wood, fabric – and paints plausible colours, so there is no brushing or manual masking to do.
Only the colour is taken from the AI. The brightness of every pixel comes from your original at full resolution, so faces, hair and textures stay exactly as sharp as in your scan. Everything happens in your browser: after a one-time download the AI runs on your computer or phone, and your family photos are never uploaded.
Key features
- AI colours on your deviceDDColor (Apache-2.0) predicts realistic colours; the photo never leaves your browser.
- Full-resolution detailThe AI supplies the colour only – the sharp lightness of your original is kept pixel for pixel.
- Standard or HD AIStandard looks at the photo at 256 px and is quick; HD works at 512 px for finer colour edges.
- Intensity and warmthMake colours subtler or richer, and shift the mood cooler or more golden – instantly, without re-running the AI.
- Before / after sliderDrag across the preview to compare the original and the colorized version.
- Batch and ZIPAdd many scans at once; photos that are already in colour can be skipped automatically.
How to use the Colorize Black and White Photos (AI)
- Add your photos Drop black and white or sepia JPG, PNG or WebP files – one or many.
- Download the AI once Choose Standard or HD and allow the one-time download; it is saved in your browser.
- Fine-tune the colours Use the intensity and warmth sliders and the before / after slider on the preview.
- Download Click Colorize photos and save each picture, or all of them as one ZIP.
Colorize Black and White Photos (AI) at a glance
| Price | Free, no watermark, no sign up |
|---|---|
| AI model | DDColor-tiny (Apache-2.0), 110 MB Standard / 130 MB HD |
| Output size | Same as your original |
| Controls | Colour intensity, warmth, skip colour photos |
| Formats | JPG, PNG, WebP |
| Processing | On your device – photos are not uploaded |
When to use it
- Bring grandparents’ wedding and family portraits to life for an anniversary or a memorial.
- Colorize historical pictures for school projects, local history groups and presentations.
- Turn sepia prints from an old album into colour images for a digital photo frame.
- Give black and white street or landscape photography a modern colour version.
- Prepare colour versions of archive images for social media posts and family trees.
Tips for the best result
- Scan prints at 300–600 dpi; a larger, cleaner scan gives sharper results because the original lightness is kept.
- Remove scratches and blur first with Restore Old Photos (AI) – it can colorize in the same step.
- If colours look too strong for an old scene, lower the intensity to 70–85 % for a hand-tinted look.
- Try HD when small areas (clothes, flowers, signs) get the wrong or blended colour.
- The AI guesses colours it cannot know – a dress or car may come out a different shade from reality.
Frequently asked questions
How do I colorize a black and white photo for free?
Add the photo to the Img Stop colorizer, allow the one-time AI download and wait a few seconds. You can adjust intensity and warmth, compare with the slider and download the colour version – free and without a watermark.
Are the colours accurate?
They are realistic guesses. The AI has learned typical colours of skin, sky, plants and materials, but it cannot know the real colour of a particular dress or car. Use the sliders to make the result look the way you remember it.
Will the colorized photo be blurry or smaller?
No. The AI predicts colour at a small size, and the tool combines that colour with the full-resolution lightness of your original, so the result is the same size and just as sharp.
Does it work with sepia or yellowed photos?
Yes. The tool ignores the brown or yellow tint and colorizes the picture from its light and dark tones. Real colour photos are detected and can be kept as they are.
What is the difference between Standard and HD?
Both use the same DDColor model. Standard analyses the photo at 256 × 256 px and is about four times faster; HD analyses it at 512 × 512 px, which keeps colours inside smaller objects more precisely.
Are my photos uploaded?
No. The AI model is downloaded once and saved in your browser; your photos are processed on your own device.
Learn more
- Image segmentation – how AI separates objects in a photo
Made and maintained by the Img Stop team.