PDF Annotator
Annotate PDFs in the browser with comments.
research
PlugThis prompt
Build a Chrome extension called "PDF Annotator" that activates on PDF viewer pages (chrome's built-in viewer and any *.pdf URL). Inject a toolbar with highlight, underline, sticky-note, and freehand-draw tools. Annotations are saved per PDF (keyed by URL + content hash) in chrome.storage.local and restored on revisit. Export annotated PDF (using pdf-lib to overlay annotations) and export annotations as JSON. Permissions: storage, activeTab. Host permissions: <all_urls>. Manifest V3 with content script.
How to build it in 3 minutes
- Sign in to PlugThis and open the chat input.
- Copy the prompt above and paste it into the chat.
- PlugThis generates the full Manifest V3 extension in 60-90 seconds.
- Download the zip, extract it, and load it via
chrome://extensionsdeveloper mode.