Skip to content

Photo Preparation

Choosing and preparing source photographs: resolution, lighting, contrast and subject separation, and the edits worth making before conversion.

6 articles

All guides

Articles tagged Photo Preparation

color-by-number10 min read

From Photograph to Mystery Page

PhotographThousands of colors, no regions
Reduced paletteEight colors, flat regions
8
8
8
8
8
8
8
8
8
8
8
8
8
8
5
4
8
8
8
8
8
8
5
5
5
5
4
2
8
8
7
7
5
5
5
4
4
2
7
7
7
7
5
5
4
4
3
2
7
7
7
7
4
4
4
3
2
1
7
7
7
7
2
3
2
2
1
1
7
7
7
7
7
1
1
1
1
7
7
7
7
7
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
Coded pageWhat the reader is given
AnswerWhat they reveal

The answer image and the reduced-palette image are the same picture. The coded page is that picture with the color taken out and the numbers left behind.

Sep 17, 2026·10 min read

How to Create a Mystery Coloring Book From Photos

A mystery book made from photographs lives or dies at the reduction stage. If the subject survives being flattened into eight colors, everything afterwards is production work.

Mosaci Studio TeamRead guide
photo-to-coloring-page8 min read
Cover illustration for the guide: Why Your Photo Looks Bad as a Coloring Page and How to Fix It
Oct 14, 2026·8 min read

Why Your Photo Looks Bad as a Coloring Page and How to Fix It

When a photo makes a poor numbered mosaic page, the cause is usually specific: the subject is too few cells wide, the color count is off, the background is eating palette colors, or the print is scaled down. Each has a setting or crop that fixes it.

Mosaci Studio TeamRead guide
photo-to-coloring-page6 min read
✓Crop to composition
✓Correct exposure
✓Simplify background
✓Check sharpness
Sep 4, 2026·6 min read

How to Prepare a Photo for Coloring Page Conversion

Choosing a good photo and preparing it are two different steps. This is the second one — the actual edits to make before you hit convert.

Mosaci Studio TeamRead guide
photo-to-coloring-page6 min read

Source Resolution

Low Resolution

~500 px — soft, blurry once printed

High Resolution

~3000 px — crisp at full page size
Sep 4, 2026·6 min read

Best Photo Resolution for Coloring Pages

Resolution isn't one number — it's three separate stages, and confusing them is why some technically 'high-res' photos still produce disappointing coloring pages.

Mosaci Studio TeamRead guide
mosaic6 min read

Poor Source

Good Result

Oct 6, 2026·6 min read

Best Photos for Mosaic Coloring Pages: What the Tile Grid Asks For

Mosaic's tile grid is unforgiving of ambiguity. Here's exactly which photo qualities matter for a clean, recognizable mosaic result.

Mosaci Studio TeamRead guide
photo-to-coloring-page22 min read
Horse illustration converted into a Circle-pattern Color-by-Number coloring page
Color-by-Number
Giant panda photo converted into a Hexagon Mark coloring page
Mark-Based
VS
Oct 6, 2026·22 min read

Best Photos for Color-by-Number & Mark-Based Conversion (With Examples)

Not every photo makes a great coloring page. Learn exactly which photos convert beautifully — and which ones will frustrate your colorists before they even pick up a pencil.

Mosaci Studio TeamRead guide

Browse other topics

Ready to try it on your own photo?

Mosaci turns a photo into a numbered color-by-number page in your browser. No account needed to see the result.

See real examples
Try the free generator