Local Processing 🔒 100% Private

🎨 Stained Glass Portrait Generator

Upload any photo and transform it into a stunning geometric mosaic. Choose from 5 unique styles, customize every detail, and download your artwork — all processed privately in your browser.

🖼️ Upload an image or pick from the gallery below
📤 Click or Drop Your Photo
JPG · PNG · WebP · HEIC
🎭 Style
📋 Quick Presets
🎨 Color Mode
Show Outlines
White Background

🔒 All processing is local. No data is ever uploaded.

How to Create Stained Glass Art from a Photo

Stained glass style artwork has become increasingly popular online because it transforms ordinary photos into colorful geometric compositions inspired by traditional glass mosaics and cathedral window art. With modern browser-based generators, it is now possible to create stained glass portraits, low poly illustrations and polygon mosaic effects in just a few seconds without using complex design software.

The process works by dividing an image into hundreds of geometric cells. Each polygon captures the average color of a specific region of the photo, while dark outlines recreate the look of real stained glass lead joints. The result is a unique artistic transformation that combines digital art with the timeless aesthetic of handcrafted mosaics.

Choose the right photo for mosaic effects

Portraits with strong lighting and visible facial contrast usually produce the best stained glass results. Close-up photos tend to preserve more detail, especially when using higher polygon counts or Voronoï styles.

Landscapes, architecture, flowers and animals also work particularly well because geometric segmentation naturally enhances textures, shapes and color transitions.

What is Voronoï mosaic art?

Voronoï art is a geometric style based on randomly distributed polygon cells. Each cell expands around a central point, creating organic stained-glass-like structures. This effect is widely used in generative art, low poly portraits and abstract digital illustrations.

Compared to traditional square mosaics, Voronoï decomposition creates a much more natural and artistic appearance with irregular polygon shapes that resemble real glass fragments.

Create low poly portraits online

Low poly artwork uses triangular or polygonal shapes to simplify an image while preserving its most important visual features. This aesthetic became extremely popular in digital art, gaming, posters and album covers because it creates a modern geometric look while remaining visually recognizable.

Many creators use low poly portrait generators to produce:

  • Social media profile pictures
  • Poster artwork
  • Digital wallpapers
  • Album covers
  • Creative portfolio visuals
  • Print-on-demand artwork
  • Abstract illustrations

100% private browser-based processing

Unlike many online image editors, this stained glass generator processes everything directly in your browser using HTML5 Canvas and JavaScript. Your images are never uploaded to external servers, which makes the experience faster, more private and more secure.

This local processing approach is especially useful for artists, designers and creators who want to experiment with geometric effects while keeping full control over their files.

Frequently Asked Questions

How does the stained glass generator work?
Upload a photo and the tool segments it into hundreds of polygonal cells using Voronoï decomposition (or other geometric patterns). Each cell is filled with the average color from that region of your photo, and dark outlines are added to simulate lead joints — just like a real stained glass window.
What's the difference between the 5 styles?
Stained Glass uses random Voronoï cells for an organic look. Low Poly creates a triangular mesh for that classic geometric portrait style. Hexagonal uses a honeycomb pattern. Cubist uses a regular grid for a blocky, modern art feel. Diamond creates a diagonal tile mosaic.
Is my image uploaded to a server?
No. Everything runs locally in your browser using JavaScript and the HTML5 Canvas API. Your image never leaves your device. You can disconnect from the internet after loading the page and it will still work.
Can I adjust the level of detail?
Absolutely. The Cell Count slider lets you set anywhere from 30 to 900 cells. Fewer cells create a more abstract, bold look; more cells preserve finer details. The outline thickness is also adjustable from 0.5 to 8 pixels.
What formats can I download?
You can download your creation as a high-resolution PNG file with a single click. The output matches the preview resolution for maximum quality.

Learn how to use this tool in our complete sticker guide.