PaperFlow 作者： Md. Mehedi Hasan Rafy
Highlight and underline PDFs in the native Firefox viewer.
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PaperFlow lets you highlight and underline text in PDFs directly inside
Firefox's built-in PDF viewer — no external apps needed.
Features:
- Yellow highlights and red underlines on any PDF text
- Floating toolbar appears on text selection
- Annotations persist across browser sessions
- Works on web PDFs, local files, and embedded PDFs
- Undo with Ctrl+Z
- Export annotations as JSON
- Enable/disable toggle in the popup
Firefox's built-in PDF viewer — no external apps needed.
Features:
- Yellow highlights and red underlines on any PDF text
- Floating toolbar appears on text selection
- Annotations persist across browser sessions
- Works on web PDFs, local files, and embedded PDFs
- Undo with Ctrl+Z
- Export annotations as JSON
- Enable/disable toggle in the popup
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