Editorial Policy

This page explains how PaperGridly prepares, checks and corrects its guides, printable templates and calculators.

Sources

Paper dimensions are given with their units and the standard they belong to, for example ISO 216 for A-series sizes, and the difference between ISO B5 and JIS B5 is stated wherever it matters. Instructions for applications and printers are based on the manufacturers’ own documentation where it is available, and external references are linked so readers can check them.

Original work and AI assistance

The printable patterns, diagrams and calculators were created for PaperGridly. AI tools are used to help with drafting text, generating templates and writing calculator code. Andrew Parkings is responsible for the PaperGridly project and can be contacted at papergrids@proton.me. Digital checks cover dimensions, formulas and rendered layouts; they do not establish professional credentials or hands-on testing of equipment. AI assistance is not a substitute for equipment-specific documentation or for printing a test page.

What we check, and what we do not claim

• Digital checks cover PDF page dimensions, page count, rendered appearance and calculator arithmetic.
• Diagrams and worked examples illustrate geometry; they are not photographs of tested printer output.
• We do not claim hands-on testing of specific printers, papers or inks, professional certification or laboratory validation.
• A rendered PDF cannot prove how a particular printer will print it, so readers should print a trial page and measure the reference when scale matters.

Corrections and updates

When an error is reported and confirmed, the affected explanation, calculation and download are corrected together. Readers can report problems through the contact page or by email at papergrids@proton.me. Dates shown on pages reflect when they were actually published or updated.

Advertising and independence

PaperGridly may show advertising to keep its resources free. Advertising does not influence which topics we cover or what our guides say. If a page ever includes affiliate links or sponsored content, it will be clearly disclosed on that page.

Independence and review scores

PaperGridly is an independent reference project, not an official source for the companies or standards mentioned. We link primary documentation where it supports an instruction or dimension. Our guides do not present reader star ratings as evidence of accuracy. A calculation is only as useful as its stated inputs and assumptions.

Corrections made on November 2, 2026

This review corrected nominal A5 dimensions versus a folded A4 panel, linear graph spacing, sheet-fit percentages versus printable-area scaling, and printer-dependent calibration claims. Sources and limitations were added to the affected resources. These are digital checks, not claims of physical printer testing.

Resource checks completed on November 2, 2026

All 37 guides and tools were revised with a task-specific worked example, relevant references and links to the next useful resource. We inspected 17 downloadable PDFs for page dimensions and reference geometry and rendered them for visual checks. Eight PDF samples produced by the generator and calibration code were also parsed and rendered. Automated arithmetic and boundary checks covered 48 cases, including unit conversion, page fitting, unequal calibration axes and a custom page too narrow for a 50 mm reference.

The calibrator now treats the first visible edge mark as a sampled inset rather than an exact printer margin. A compensating scale is labelled as a candidate for another test, with its assumptions stated. These checks do not certify a printer, establish real-world precision or guarantee advertising approval. Readers should still verify one physical sample before using measured templates.