Developer details four technical hurdles in building a tweet-to-PDF converter

A developer set out to build a tool that converts Twitter/X post links into clean PDFs including text, author info, and images, expecting it to take one afternoon. The project hit immediate obstacles, starting with CORS restrictions that block browsers from directly accessing X's syndication endpoint, forcing all data fetching to be routed through a server-side proxy. A token parameter required by X's endpoint turned out to be a client-side mathematical formula derived from the tweet ID, which the developer computed in the browser and passed to the backend. Cross-origin image restrictions on canvas elements were bypassed by having the server fetch images and return them as base64 data URLs. A final challenge involved rendering non-Latin Unicode characters correctly in the generated PDF using the jsPDF library.