Hi all, is there a method to extract rendered font data using Chrome headless mode? I would appreciate any suggestions.
yo, i’ve done this b4. use puppeteer with chrome devtools protocol. launch browser, enable DOM n CSS domains, grab the element u want, then use CSS.getPlatformFontsForNode. it’ll give u all the font deets. bit tricky to setup but works gr8 for gettin exact font info in headless mode
I’ve tackled this problem before using a combination of Puppeteer and the Chrome DevTools Protocol (CDP). Here’s what worked for me:
First, launch Puppeteer and navigate to your target page. Then, enable the DOM and CSS domains through CDP. Use DOM.getDocument to grab the page structure, and DOM.querySelector to pinpoint the element you’re interested in.
The key is using CSS.getPlatformFontsForNode on that element. This returns detailed font information including family, weight, and style. It’s more involved than standard Puppeteer commands, but gives you precise rendering data.
One caveat: this method requires some familiarity with CDP. If you’re new to it, there’s a bit of a learning curve. But once you get the hang of it, it’s a powerful tool for extracting rendered font data in headless mode.
Remember to close your browser instance when you’re done to free up resources.
I’ve had success extracting rendered font data in Chrome headless mode using Puppeteer with the Chrome DevTools Protocol. Here’s a quick overview of my approach:
Launch Puppeteer and navigate to the target page. Enable the DOM and CSS domains via CDP. Use DOM.getDocument and DOM.querySelector to select the desired element. Then call CSS.getPlatformFontsForNode to retrieve font details for that node.
The returned data includes font family, weight, etc. It requires a bit more setup than standard Puppeteer commands, but gives you precise font rendering information. Let me know if you need any clarification on the specific CDP calls or data format.