1. 01In single mode enter a width and height from 1 to 4000 px, or click a preset size.
2. 02Set the background colour, the text colour, a custom label and the output format.
3. 03In batch mode enter one size per line, for example 800x600, 1280×720 or 200,200.
4. 04A single image downloads directly; a batch generates each one and packages them into a ZIP.

• Width and height are both limited to 1–4000 px; batch parsing reads at most four digits per dimension and clamps it to that range again.
• Batch sizes accept x, ×, *, a comma, a CJK comma, a colon or whitespace as the separator; lines that cannot be parsed are listed as warnings and skipped.
• PNG and JPEG are produced through canvas; the JPEG quality is 0.92; SVG is generated directly as text containing <rect> and <text>.
• A custom label that is too wide has its font size reduced step by step, but there is no complex automatic wrapping; the SVG font size is approximated from the character count.
• What it does not do: it does not generate real photographs, does not call a remote placeholder image service and does not upload the generated result.

Sizes, colours, labels and all images are generated locally in the browser; neither the parameters nor the generated images are sent to a remote service.