Online Batch Image Random Bitmap Generator

What this tool actually does

Generates a batch of random block-color bitmap images without an upload. Controls are width default 800 px, height default 500 px, pixel-block size default 10 px and generation count default 10. Count is clamped to 1..30, dimensions to 1..10000 each and each canvas to at most 24,000,000 pixels; the whole generated batch is rejected above40,000,000 output pixels.

Checkable behavior

For every square block, the browser chooses a fresh random HSL hue with fixed 75 percent saturation and 55 percent lightness, then fills a block of the chosen pixel size. Block size is clamped to 1..1000. Every generated canvas is independent; there is no seed, repeatable sequence, palette selector, alpha control or cryptographic randomness guarantee.

Controls, output and limitations

Verified default geometry produces ten800 by500 canvases divided into nominal10 px blocks. A25 by10 canvas with block12 draws blocks beginning at x0,12,24 and y0, so edge blocks can be narrower; output dimensions themselves remain25 by10. Setting count above30 produces30 outputs, subject to the40-million-pixel batch cap.

Press Generate to create a new random batch; changing controls cancels the current batch and clears its previews; press Generate again to create another batch. Results are encoded as PNG and named random-1.png, random-2.png and so on. Download starts separate browser downloads about160 ms apart; it does not create a ZIP or preserve a deterministic seed.

Generation uses the local browser canvas with no server or AI. Large dimensions and many outputs consume memory, which is why both per-image and batch pixel limits apply. The colored pattern is suitable for placeholders, texture experiments or test assets, not security tokens, scientific random samples or proof of entropy.