Playwright generates vector PDF and 300 dpi PNG in 3.5 seconds server-side

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Developer Mohamed Amine Ben Mallessa of Sollea AI built a server-side document generation pipeline using Playwright with a headless Chromium browser. The system converts an HTML template into a vector A4 PDF and a 300 dpi PNG (2480×3508px) in approximately 3.5 seconds per document, with no external SaaS or paid tools required. A single self-contained HTML file with inline CSS and SVG serves as the template, receiving form data via JavaScript's postMessage API. The same template works both as a live browser preview and as the final render source, eliminating any preview-to-production discrepancy. Compared to alternatives like wkhtmltopdf and Puppeteer, Playwright was found superior in reliability, vector output quality, and ease of integration with FastAPI.

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