Building a Browser-Based Tiled Poster PDF Generator

A tiled poster generator looks simple from the outside: load an image, choose a paper size, and download a PDF. The implementation becomes more interesting when the entire pipeline has to run in the browser, preserve physical dimensions, support overlapping pages, render a halftone effect, and avoid exhausting mobile memory.

I recently worked through those constraints while building . I am particularly interested in alternative approaches to preview sampling and large-document memory management.

Disclosure: this article was drafted with AI assistance and then reviewed against the project implementation.