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Mozilla's HTML5 PDF Viewer with Reader-mode add-on. doqment is a modified version of Firefox's PDF.js viewer optimised for sustained reading, allowing you to view PDFs in different colour themes. It has both dark & light themes to make reading more comfortable on the eyes. It also adds some other handy features like automatically tracking ToC, smart zooming text and hiding the toolbar to assist reading, especially on smaller screens. Happy PDF Reading! Features: • Choose reader theme • Annotate, sign and highlight PDFs • Fill out interactive PDF forms • View document thumbnails or outline • Present, print and get link to pages • Rotate, change scrolling and spreads How to use: • Right/Ctrl click a link or embeded PDF and choose 'Open in doqment' • Open a PDF in Chrome and click the toolbar button • Click the toolbar button in New Tab to open local PDF files • Right/Ctrl click the toolbar button to set as default viewer and for other options • When set as PDF default viewer, Right/Ctrl click links to open them in built-in viewer • Bypass built-in viewer to use directly or alongside other PDF extensions • Allow access to file URLs in Manage Extension to open also local PDFs by default • PDF viewer and reader mode settings can be changed in the Options page Keyboard shortcuts: • `Alt+Q`: Open current tab in doqment: (`^Q` on macOS) • `Z`: Smart zoom text under mouse pointer • `F3`: Toggle the main toolbar All PDF.js shortcuts can be viewed at https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#what-are-the-pdfjs-keyboard-shortcuts. Notes: • To open PDFs in Chrome without downloading them, you may need to check if it is enabled first (go to Settings => Privacy and security => Site Settings => Additional content settings => PDF documents; or open `chrome://settings/content/pdfDocuments`). If you set it to Download, you can still use doqment via the right-click menu. • Changing the colours of PDFs needs some processing and that may slightly slow down the rendering in Reader Mode. Feel free to report if it is annoyingly slow for a PDF you are trying to read. • Please do not report your issues with this extension to the Firefox viewer team. This is a separate extension, so post your issues/feedbacks directly at the Support tab, by mail or over at the GitHub page. This software is fully open-source and does not collect any user data.
Aug 5, 2026
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