Technical Guides
Understanding the constraints and capabilities of client-side document rendering.
Understanding Browser Memory Limits
Why a 500MB PDF might crash Chrome, and how V8 garbage collection affects local rendering engines.
Read GuideFont Substitution Architecture
How we maintain visual fidelity in PDFs when the original fonts are not embedded, without phoning home to Google Fonts.
Read GuideXSS Prevention in EPUB & HTML
Sanitization strategies when rendering user-provided flowable formats that contain embedded scripts.
Read Guide