Articles tagged "chrome-offscreen"

2 articles found

chrome-extensions tabcapture chrome-offscreen

Record the current tab from an MV3 extension: tabCapture and offscreen documents

A service worker can't hold a MediaStream. Build a Chrome extension that records the current tab's video and audio with chrome.tabCapture — full code, ~30 min.

Maxim Kosterin

August 29, 2026

16 min read

An empty hairline rectangle joined by a thin curve to a smaller dashed one below it, which holds a soft orange watercolor wash — the hidden page that has the DOM the empty one lacks.

chrome-extensions chrome-offscreen manifest-v3

Offscreen documents in Chrome extensions: how to use the DOM from an MV3 service worker

MV3 service workers have no DOM. Build a Chrome extension that parses HTML and writes to the clipboard from an offscreen document — runnable code, ~25 min.

Maxim Kosterin

August 4, 2026

19 min read