PDF.js
PDF.js | |
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![]() | |
![]() PDF.js in Firefox 100, with a table of contents displayed on the sidebar | |
Original author(s) | Andreas Gal |
Developer(s) | Mozilla |
Initial release | 2 July 2011[1] |
Stable release | 5.3.31[2] ![]() |
Repository | |
Written in | JavaScript, CSS, HTML |
Platform | JavaScript engine, web browser |
Size | 3.94 MB[1] |
Type | PDF viewer |
License | Apache License 2.0[3] |
Website | mozilla |
PDF.js or pdf.js is a JavaScript library that renders Portable Document Format (PDF) files using the web standards-compliant HTML5 Canvas. The project is led by the Mozilla Corporation after Andreas Gal launched it (initially as an experiment) in 2011.
History and application
PDF.js can work as a part of a website or of a browser. Originally created as a Firefox extension,[4] it is included in Firefox since 2012 (version 15)[5][6] and is enabled by default since 2013 (version 19).[7][8] It is also included in Thunderbird,[9] ownCloud,[10] Nextcloud,[11][12] and as a browser extension for Google Chrome, Chromium,[13] Firefox for Android,[14] Pale Moon[15][16] and SeaMonkey.[16][17]
Developers will also embed PDF.js in their software to enable PDF rendering and viewing in a web or native application or rendering on a server. Examples of PDF.js integrations include Dropbox (service) for PDF document previews,[18] Slack (software),[19] and Linkedin for viewing accessible course materials online.[20] Some software development products are also making it easier to extend PDF.js.[21][22]
Behavior
According to one benchmark, PDF.js is performant for viewing most common PDF files, while it may have some issues with large or 'graphics-heavy' documents.[23]
PDF.js supports most of the PDF specifications (including form support or XFA[24]) , but some features have not been implemented yet, which may impact rendering behavior depending on the features the document uses.[25]
PDF features not yet added to PDF.js or incomplete:
- Optional Content Groups (OCGs)
- ICC Color Profiles
- Spot colors
- Overprint simulation
- Transparency groups (knockout/isolation)
- Some patterns & shadings
- High-fidelity printing
The PDF.js contributor community also notes that the browser behavior of PDF.js varies with browser support for PDF.js's required features.[26] Performance and reliability will be the best on Chrome and Firefox, which are fully supported and subject to automated testing.
See also
References
- ^ a b "Releases · mozilla/pdf.js". GitHub. Retrieved 12 March 2021.
- ^ "Release 5.3.31". 1 June 2025. Retrieved 16 June 2025.
- ^ "pdf.js/LICENSE at master · mozilla/pdf.js". GitHub. 17 February 2022.
- ^ "PDF Viewer(discontinued)". addons.mozilla.org. Archived from the original on 5 December 2015. Retrieved 2 December 2015.
- ^ Parfeni, Lucian (30 April 2012). "PDF.JS and Download Manager Panel Pushed to Firefox 15". Softpedia. SoftNews.
- ^ Blagoveschenskiy, Anton (29 August 2012). "Вышла новая версия браузера Firefox 15" [New version 15 of the Firefox browser released]. Rossiyskaya Gazeta (in Russian). Retrieved 9 September 2012.
- ^ "Bug 773397 – Disable pdf.js prior to FF15 beta 5". bugzilla.mozilla.org.
- ^ "Firefox 19.0 Release Notes". mozilla.org. Retrieved 30 April 2013.
- ^ "810815 - Integrate pdf.js to Thunderbird". bugzilla.mozilla.org. Retrieved 28 January 2022.
- ^ owncloud/files_pdfviewer, ownCloud, 8 February 2020, retrieved 28 March 2020
- ^ nextcloud/files_pdfviewer, Nextcloud, 18 March 2020, retrieved 28 March 2020
- ^ "PDF viewer - Apps - App Store - Nextcloud". apps.nextcloud.com. Retrieved 28 March 2020.
- ^ "PDF Viewer". Chrome Web Store.
- ^ "Android PDF.js". addons.mozilla.org.
- ^ "Add-ons - Moon PDF Viewer". Pale Moon - Add-ons. Archived from the original on 3 January 2020. Retrieved 4 May 2021.
- ^ a b "IsaacSchemm/pdf.js-seamonkey: SeaMonkey fork of pdf.js". GitHub. Archived from the original on 6 December 2020. Retrieved 4 May 2021.
- ^ "PDF Viewer for SeaMonkey". Add-ons for SeaMonkey.
- ^ Lauraharrisneal. "Annotations on Document Previews". dropbox.tech. Retrieved 5 August 2021.
- ^ "What matters to you, matters to us. - Slack Engineering". Slack Engineering. 16 November 2016. Retrieved 5 August 2021.
- ^ "Under the hood: Learning with documents". engineering.linkedin.com. Retrieved 5 August 2021.
- ^ "Show HN: Pdf.js Express – PDF annotation, e-signatures, and form filling | Hacker News". news.ycombinator.com. Retrieved 5 August 2021.
- ^ "Introducing PDF.js Express". pdfjs.express. Retrieved 5 August 2021.
- ^ "How fast is PDF.js? – Mozilla Hacks - the Web developer blog".
- ^ "1706133 - (pdf-xfa) [meta] XFA support". bugzilla.mozilla.org. Retrieved 28 January 2022.
- ^ "Guide to Evaluating PDF.js Rendering". PDFTron. Retrieved 5 August 2021.
- ^ "Frequently Asked Questions · mozilla/pdf.js Wiki". GitHub. Retrieved 5 August 2021.
External links
- Official website
- "View PDF files in Firefox". Firefox Help. Mozilla.
- "pdf.js: Rendering PDF with HTML5 and JavaScript". Andreas Gal's blog. 15 June 2011.
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ignored (help) - Catalin Cimpanu (3 May 2012). "Script of the Day: pdf.js". Softpedia.