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Random Bitmap Generator

Generate random bitmap-style grids for examples, demos, coding exercises, masks, and placeholder pixel data.

Last updated: May 31, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is Random Bitmap Generator?

This tool creates a random two-dimensional grid of 1 and 0 values. The preview renders 1 as # and 0 as . so the bitmap pattern is easier to inspect.

How to Use Random Bitmap Generator

1

Enter the bitmap width and height.

2

Adjust the fill percentage.

3

Click Generate.

4

Copy the raw 1/0 rows or inspect the ASCII preview.

Common Use Cases

  • Creating random pixel masks for demos.
  • Testing bitmap parsing code.
  • Teaching binary image concepts.
  • Generating placeholder grid data.

Example Input and Output

Generate an 8 by 4 bitmap.

Settings
Width: 8, Height: 4, Fill: 50%
Bitmap
10100110
01011001
11100010
00010111

Data Privacy

Bitmap grids are generated locally in your browser.

Frequently Asked Questions

Is this a downloadable image file?
No. It generates raw 1/0 bitmap rows and an ASCII preview, which is useful for data and coding workflows.
Can I control the density?
Yes. Use the Fill slider to change how often cells become 1.
Can I copy the bitmap?
Yes. The copy button copies the raw rows as plain text.

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