← Back to Blog  |  6 July 2026

How to Colorize Old Black-and-White Photos

By BersihBG  ·  8 min read

There is something magical about seeing a century-old black-and-white photograph suddenly burst into colour. It transforms a distant historical image into something immediate and personal — a great-grandparent becomes a real person, a vintage street scene feels like somewhere you could walk into, and faded memories regain their vibrancy. AI colorization makes this possible for anyone, for free, in just a few clicks.

How AI Colorization Works

AI photo colorization uses deep learning models trained on millions of colour photographs. The AI learns to recognise objects, textures, and scenes — it knows that skies are usually blue, grass is green, skin tones fall within certain ranges, and clothing colours follow predictable patterns. When you feed it a black-and-white photo, the AI analyses the grayscale values and intelligently assigns realistic colours to each region.

Modern colorization models go beyond simple colour washes. They can distinguish between different materials (fabric, metal, skin, wood), recognise lighting conditions (sunlight, shade, indoor), and even infer colours from context — like knowing that a military uniform from a specific era should be a particular shade of khaki or olive.

How to Colorize Photos Using BersihBG

  1. Visit the Photo Colorizer page on BersihBG.
  2. Upload your black-and-white or sepia photo. JPG, PNG, and WEBP formats are supported.
  3. Adjust the colour intensity slider. Higher values produce more vibrant, saturated colours. Start at 100% for most photos.
  4. Enable the Restore toggle if your photo has scratches, folds, or dust spots. The AI will denoise and reduce damage before colorizing.
  5. Optionally enter colour hints — e.g., "blue sky, green grass, red brick building, brown hair" — to guide the AI toward your preferred colour palette.
  6. Click Colorize Photo and wait 10-30 seconds for the AI to process. Download your newly coloured photo.

Tips for the Best Colorization Results

Use Cases for Photo Colorization

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Frequently Asked Questions

How accurate are the colours produced by AI colorization?

AI colorization is remarkably accurate for common scenes and objects — skies, vegetation, skin tones, and typical clothing. For ambiguous subjects (unusual objects, specific historical uniforms, or brand colours), providing colour hints helps the AI produce more accurate results.

Can I colorize sepia-toned photos?

Yes. The AI recognises sepia-toned images and handles them well. The tool works on black-and-white, sepia, and even faded colour photographs that need restoration.

How long does colorization take?

Most images are processed in 10-30 seconds. The first ever request may take up to a minute as the AI server initialises. Larger images take proportionally longer.

Do I need an account to use the colorizer?

Yes, because the colorization runs on our AI servers, a free account is required. Free users receive daily AI credits, and VIP subscribers get unlimited colorization with priority processing.

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