How to Take Screenshots in Docker (Without Installing a Browser)

How to Take Screenshots in Docker (Without Installing a Browser) You're building a containerized app. It needs to generate screenshots. You add Puppeteer to your Node.js image and... your Docker image balloons from 200MB to 800MB+. Why? Puppeteer in Docker requires: System dependencies — fonts, libraries, shared objects (libX11, libXcomposite, etc.) Chromium binary — 200–300MB alone Security concerns — --no-sandbox disables Linux sandboxing; risky in production Memory overhead — Each container needs 256MB+ for Puppeteer + Chromium Build time — Installing deps and Chromium adds 2–5 minutes to builds Layer bloat — Intermediate layers make images impossible to cache efficiently Self-hosted Puppeteer in Docker is slow to build, large to deploy, and risky to run. There's a simpler pattern: replace Puppeteer with an API call. One HTTP request. Screenshot back in 1–2 seconds. No browser. No dependencies. No sandbox issues. Here's how to take screenshots in Docker without managing a browser. T