Description
I'm requesting an early TAG design review of exposing unprintable areas via CSS.
Most printers have a small region along each edge of the page sheet which is unprintable, due to the printer's paper handling mechanism. See https://drafts.csswg.org/css-page-3/#page-terms
The size of these unprintable areas are available to applications (such as browsers) in most OSes, but currently it's not web-exposed. This means that authors have no means of confidently setting page margins to prevent content from getting clipped. This becomes a more obvious shortcoming for @page margin boxes for e.g. custom headers and footers. See https://drafts.csswg.org/css-page-3/#margin-boxes
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Security and Privacy self-review: https://github.com/mstensho/unprintable-areas?tab=readme-ov-file#are-there-any-privacy-security-and-accessibility-considerations
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GitHub repo: https://github.com/w3c/csswg-drafts
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Primary contacts:
- Morten Stenshorne (@mstensho), Google, spec proposal and implementation
- Tab Atkins-Bittner (@tabatkins), Google, editor of css-env
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Organization/project driving the design: Google
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Incubation and standards groups that have discussed the design: [css-page][css-env] Expose unprintable areas via CSS w3c/csswg-drafts#11395
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Standards group(s) that you expect to discuss and/or adopt this work when it's
ready: CSSWG -
Multi-stakeholder feedback:
- Mozilla comments: https://github.com/mozilla/standards-positions/issues/NNN
- WebKit comments: https://github.com/WebKit/standards-positions/issues/NNN
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I have reviewed the TAG's Web Platform Design Principles