Generate a Random Bitmap
Quickly generate random bitmap images. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate a Random Bitmap
- 1. Set the grid size. Enter Width (cells) and Height (cells) to decide how many cells make up the bitmap grid. A small grid like 16x16 gives a chunky pixel-art look.
- 2. Set the cell size. Cell size (px) controls how large each grid cell renders on screen. Increase it to make a small grid fill more space without changing the number of cells.
- 3. Choose black & white or color. Turn on Use random colors instead of black & white to fill each cell with a random hue rather than plain black or white noise.
- 4. Generate and save. Click generate to render the SVG bitmap, then download it. Regenerate for a completely different noise pattern at the same settings.
When to use Generate a Random Bitmap
Generate a Random Bitmap fills a grid of cells with random black-and-white or colored noise, rendered as an SVG. It is built for quick pixel-art style visuals rather than photographic randomness.
- Placeholder texture for a game tile. A game developer needs filler noise texture to test how a tile-based background looks before the real art asset is ready.
- Static or TV-noise visual effect. Someone designing a retro-styled webpage wants a black-and-white static texture as a background element or transition effect between sections.
- Teaching bitmap and pixel concepts. An instructor explaining how images are stored as grids of pixels generates a small bitmap live to show students what a raw grid of random values looks like.
- Colorful abstract background art. A designer wants a quick abstract, randomly colored grid to use as a busy background pattern behind a headline, without opening an image editor.
Examples
A 16×16 black & white bitmap
Output
SVG image
A colorful 32×32 bitmap
Output
SVG image
About the Generate a Random Bitmap tool
Generate a Random Bitmap runs as plain JavaScript in your browser tab, with no server behind it. Quickly generate random bitmap images. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Random Tools section, 120 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 4 settings, including Width (cells), Height (cells), Cell size (px) and Use random colors instead of black & white, and the result refreshes the moment you change one. 2 worked examples further down the page show exactly what the tool produces for real inputs.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Generate a Random Bitmap cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
Can I save what the tool produces?
Yes. Use the download or copy controls in the output panel to keep the rendered result once it looks the way you want.