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IMAGE Free · no sign-up In your browser · AI model

Colorize black & white photos

Bring old family pictures and vintage shots to life with AI colour — on your device, with detail and sharpness kept.

Photo stays on your deviceFull-resolution detailAdjustable strengthNo sign-up
Your photo is processed in your browser and is never uploaded to any server. The first time you use it, an open-source AI model is downloaded and then cached by your browser.
AI model. This tool downloads an open-source AI model (DDColor, about 129 MB) to your browser the first time you use it, which uses data and memory, and it is then kept in your browser cache. Everything runs on your device and your photo is not uploaded to any server. The colors are the AI’s guess, not the real colors of the scene — always check the result before you use it.
How it works

Colorize a photo in three steps

1

Add a photo

Drop a black and white image or paste one with Ctrl+V.

2

Press Colorize

The AI model adds colour. The first time it is downloaded once and cached.

3

Adjust and download

Make the colors softer or more vivid, compare with the original, and save a PNG or JPG.

Why use it

Colorizing that stays private

Photo never leaves your device

The AI model runs inside your browser. Family photos are not sent to a server.

Keeps your detail

The AI only chooses colors. They are applied to the full-resolution brightness of your photo, so it stays sharp.

Color strength

Dial the colors down for a subtle tint or up for a vivid look, instantly.

Compare with the original

Hold a button to flip back to the black and white photo.

Good to know

Getting a natural-looking result

How it works

A photo has two parts: brightness and colour. A black and white photo only has the brightness. The AI model (DDColor) has learned from millions of colour pictures what things usually look like — blue sky, green grass, warm skin — and predicts a colour for every part of your photo. Those colors are then combined with your original brightness, so every detail of the original is kept.

The colors are a guess

A black and white photo does not contain information about the real colors. The model picks the most likely ones, so a dress, a car or a wall can come out in a different color than in real life. For historical or family photos, treat the result as an interpretation, not a record.

Photos that work best

Sharp, well-exposed photos of people, landscapes, buildings and everyday scenes give the most natural result. Heavily damaged, very dark or very blurry scans are harder. If the first result is too strong or too weak, use the Color strength slider.

Already-colour photos

If you add a colour photo, only its brightness is used and new colors are painted over it. To keep colors you already like, use a different tool.

Size, formats and memory

Images larger than 4096 px on the longest side are reduced to that size. You can save a lossless PNG or a smaller JPG. The model needs a few hundred megabytes of memory while it runs; if a very old phone runs out, try again on a computer.

Licensing and privacy

The model used is DDColor (Apache-2.0). Your photo is never uploaded to any server. Only the model file is fetched from a public server the first time. You are responsible for having the rights to the images you edit.

FAQ

Frequently asked questions

Is the photo colorizer free?
Yes — completely free, with no account and no watermarks. Part of Mokivo.
Is my photo uploaded to a server?
No. The picture is processed in your browser. Only the open-source AI model file is downloaded, once, and then reused from your browser cache.
Why does the first run take longer?
The first time, the AI model (about 129 MB) has to be downloaded. After that it is reused from your browser cache and starts quickly.
Are the colors accurate?
No. The model guesses plausible colors from what it recognises in the picture (sky, grass, skin, clothes). The real colors of an old photo can be different, so treat the result as an interpretation.
Can I colorize a photo that is already in color?
Yes, but the original colors are discarded: only the brightness of the photo is kept and the AI paints new colors on it.
Does it reduce my photo’s quality?
No. The AI only decides the colors, at a lower internal resolution. They are applied to the full-resolution brightness of your photo, so detail and sharpness are kept. Images above 4096 px are reduced to 4096 px on the longest side.
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