How templates are created

Every template available on PrintReadyKit — business card, label sheet, graph paper, ruler — is generated mathematically from the numbers you select. Nothing here is copied from another website, traced from a manufacturer’s file or imported from a third-party template library.

The output formats

Most tools offer both PDF and SVG, and they are not interchangeable. PDFcarries a fixed page size, so a ruler or a calibration sheet arrives at true scale in any print dialog without depending on how the software decided to fit it — which is exactly what matters when the measurement is the point. SVG is a vector format defined in real-world units that opens in any browser or design tool and stays editable, which is what you want from a template you intend to build on.

Either way the page size is set in millimetres and every line is drawn at its actual physical position, so printing at “Actual size” on a calibrated printer gives you the dimensions shown on screen.

The maths

For a business card with bleed, the generator draws four rectangles: the bleed area, the trim line, the safe area and four crop marks at each corner. All four are calculated from three inputs — card width, card height and bleed amount — using basic arithmetic. The output is fully reproducible: the same inputs always produce the same SVG, byte for byte.

Label sheets are similar but more involved: row count, column count, label dimensions, page margins and gaps are combined into a grid of rectangles, circles or rounded rectangles positioned on the page. A validation step rejects any combination that would push labels off the page.

No branded templates

The label and card presets on this site describe generic mathematical layouts (for example, “3 columns × 7 rows on A4 with 7.2 mm left margin”). They are not named after, and do not claim compatibility with, any specific manufacturer’s product. If your label sheet uses a similar layout, the preset can be a useful starting point — but you should always verify the actual dimensions of the sheet in your hand before printing a full run.

Not everything here is a template

The word covers only part of what the site does now, and the differences are worth knowing because they change what “runs in your browser” means in each case.

• Calculators — the paper size converter, DPI calculator, weight converter and envelope finder do arithmetic and show a result. No file is produced and nothing leaves the page.
• Generators — rulers, graph paper, label sheets, business cards and sheet layouts build vector geometry from your inputs and hand you a PDF or SVG.
• Analysers — the image print quality tool decodes a file you choose and reads its dimensions and embedded resolution from the first kilobytes of the header. The image is never uploaded; the browser reads it locally and the result disappears when you close the page.
• Processors — the poster splitter is the heaviest of them: it decodes your image or PDF, re-renders it in tiles and assembles a multi-page PDF, all on your own machine. This is why very large files are refused rather than attempted — the work has nowhere else to go.
• Measurement — the calibration test prints known references and converts what you measured into the corrective percentage. The arithmetic is trivial; the value is in the references being exact.

Source of the dimensions

Card and envelope dimensions are taken from public standards: ISO 216 for A-series paper, ISO 269 for C-series envelopes, the Japanese Industrial Standard for the JIS card, and common regional conventions (US 3.5 × 2 in card, UK 85 × 55 mm card). US Letter, Legal and Tabloid follow the ANSI series.