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spec(document-renderer): HTML-to-PDF engine choice and paged-media support - #579
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…S support Document the HTML-to-PDF rendering engine specification for document-view PDF rendering with paged-media CSS support (named pages, landscape orientation, running footers). Engine choice: PrinceXML as reference renderer, caller-supplied as standing option. Specification includes paged-media feature matrix and integration contract for landscape pages, running footers, and figure integration work. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com> Signed-off-by: transitrix <automation@transitrix.com>
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Evaluation of HTML-to-PDF rendering engines (completed 2026-09-02) shows Vivliostyle is the optimal reference renderer choice over PrinceXML: - Vivliostyle: Complete paged-media CSS support, actively maintained (Aug 2026), open-source (AGPL-3.0/MPL-2.0), Node.js native - PrinceXML: Commercial (,800+/seat), licensing barrier for open-source methodology and adopters Standing shape remains caller-supplied (Option 3); reference renderer (Option 2) is Vivliostyle. Adopters may substitute if they satisfy the paged-media feature matrix. Signed-off-by: transitrix <automation@transitrix.com>
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Summary
Specification for HTML-to-PDF rendering engine choice and paged-media CSS support. Engine choice: PrinceXML as reference renderer, caller-supplied as standing option.
This work specifies infrastructure required for landscape pages, running footers, and figure integration.
Contents
PDF_RENDERING_ENGINE.md: Complete specification including:
README.md update: Added reference section linking to engine spec
Design notes
Test plan