Testing and editorial scope

Automated checks in this project

• Export a URL PNG and decode it with an independent decoder to compare the result with the entered address.
• Reject blank input, record downloads locally, and recover from malformed local history.
• Create two saved projects and verify that both remain after reloading.
• Check a 1000-pixel export preview at a 390-pixel viewport without horizontal page overflow.
• Record bulk ZIP payloads and reject a batch larger than the supported limit.
• Generate an encrypted link, reject a wrong password, and recover the intended URL with the correct password.
• Check payload formatting and the service worker’s cache exclusions and offline fallback behavior.
• Run the scanability check, change the design to invalidate its result, and check unreadable colors and the reset action.
• Export and import project backups, exercise duplicate handling, and reject malformed files and imports exceeding the project limit.
• Check PDF page dimensions for all four print templates and decode a business-card PNG. These checks do not measure a physical print.

These checks run in the project’s test suite and build workflow. A passing run supports those specific behaviors; it is not evidence that every possible payload or every receiving application works.

What has not been certified

The automated suite does not certify iPhone or Android native Wi-Fi joining, contact importing, calendar importing, every camera, or any commercial printer. It does not validate the owner, accuracy, availability, or safety of a URL supplied by a user.

Before a print run, scan the final physical sample on the devices your visitors are likely to use. Check the actual payload, the destination or imported fields, viewing distance, lighting, border, and final material. The print preparation guide gives a repeatable workflow.

How the guides are prepared

The guides use AI-assisted drafting grounded in this application’s implementation and technical references linked within the articles. Examples are fictional demonstrations and calculations, not claimed customer results. Overlapping topics are combined so a visitor can complete a task in one walkthrough.

We avoid automatic “reviewed” dates and unsupported author or device-testing claims. If an instruction no longer matches the tool, please send the page and correction. Website instructions should be checked against the actual destination and device before a consequential use.