--- title: "WT PDF.js documentation - WebTolk websites development, Joomla Extensions" description: "A general-purpose, web standards-based platform for parsing and rendering PDFs." url: "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation" date: "2026-10-09T18:12:15+00:00" language: "en-GB" --- ## Breadcrumbs [Home](https://web-tolk.ru/en) > [Joomla extensions](https://web-tolk.ru/en/dev) > [Joomla plugins](/en/dev/joomla-plugins) > [WT PDF.js](/en/dev/joomla-plugins/wt-pdf-js) > Documentation # WT PDF.js - Documentation **Categories:** [Joomla plugins](https://web-tolk.ru/en/dev/joomla-plugins), [Web Assets](https://web-tolk.ru/en/dev/web-assets) [Project](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js)[Download](https://web-tolk.ru/en/get?project_id=98)[Versions](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/versions)[GitHub](https://github.com/mozilla/pdf.js) ##### [Installing and registering WT PDF.js in Joomla](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/installation-registration) Install the ZIP through Joomla. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/installation-registration) ##### [WT PDF.js for Joomla: asset reference](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/asset-reference) All assets, which are JavaScript files registered with Joomla, have type script and type="module" . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/asset-reference) ##### [PDF.js in Joomla: choose and load a library](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/choose-library) This works in a frontend module layout, component view or template override. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/choose-library) ##### [PDF.js latest in Joomla: CDN integration](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/cdn-latest) wt-pdf-js-latest uses the npm @latest tag, which may change without a plugin update. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/cdn-latest) ##### [PDF.js in Joomla: render a PDF on canvas](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/canvas-rendering) Register your own module with a dependency on the chosen asset. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/canvas-rendering) ##### [PDF.js in the Joomla administrator](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/administrator-integration) Automatic registration applies only to the site application. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/administrator-integration) ##### [PDF.js inline module through Joomla WebAssetManager](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/inline-module) Use addInlineScript() with a dependency and type="module" . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/inline-module) ##### [PDF.js viewer in Joomla: links and iframes](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/web-viewer) Each viewer includes its complete UI, local worker and resources. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/web-viewer) ##### [PDF.js viewer URLs: file, page and zoom](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-url) The query is ?file=...&config=catalog.json ; the fragment is #page=2&zoom=150 . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-url) ##### [PDF.js JSON profiles in Joomla: file locations](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/user-config-files) Profiles live in media/plg_system_wtpdfjs-config/ , beside the supplied media/plg_system_wtpdfjs/ directory. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/user-config-files) ##### [PDF.js in Joomla: select a JSON profile](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/select-config) Both viewers use these rules: [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/select-config) ##### [PDF.js JSON profiles: format and application order](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/json-format) The root is a flat object of 6.4.299 PDFViewerApplicationOptions (AppOptions) names. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/json-format) ##### [PDF.js viewer JSON options: reference](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-options) Types and values apply to the 6.4.299 viewers. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-options) ##### [PDF.js in Joomla: page-width default profile](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/default-profile) File: media/plg_system_wtpdfjs-config/default.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/default-profile) ##### [PDF.js: catalogue JSON profile with spreads](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/catalog-profile) File: media/plg_system_wtpdfjs-config/catalog.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/catalog-profile) ##### [PDF.js in Joomla: mobile reading profile](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/mobile-profile) File: media/plg_system_wtpdfjs-config/mobile.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/mobile-profile) ##### [PDF.js: dark theme and viewer language](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/dark-theme-locale) File: media/plg_system_wtpdfjs-config/reader-dark.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/dark-theme-locale) ##### [Large PDFs in Joomla: PDF.js partial loading](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/large-pdf-profile) File: media/plg_system_wtpdfjs-config/large-document.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/large-pdf-profile) ##### [PDF.js: a profile with PDF scripting disabled](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/disable-pdf-scripting) File: media/plg_system_wtpdfjs-config/read-only.json . [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/disable-pdf-scripting) ##### [PDF.js in Joomla: multiple JSON profiles](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/multiple-profiles) A catalogue can use config=catalog.json, a mobile layout config=mobile.json, and another section its own file. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/multiple-profiles) ##### [PDF.js in Joomla: errors and troubleshooting](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/troubleshooting) JSON is awaited for up to five seconds. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/troubleshooting) ##### [Updating WT PDF.js in Joomla and keeping settings](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/updates) Updates replace media/plg_system_wtpdfjs/ files, including the library, viewers and loader. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/updates) ##### [Joomla and PDF.js: APIs and developer documentation](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/api-references) This documentation matches WT PDF.js 6.4.299 source. [More](https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/api-references) ## JSON-LD Schema ```json { "@context": "https://schema.org", "@type": "BreadcrumbList", "@id": "https://web-tolk.ru/#/schema/BreadcrumbList/17", "itemListElement": [ { "@type": "ListItem", "position": 1, "item": { "@id": "https://web-tolk.ru/en", "name": "Home" } }, { "@type": "ListItem", "position": 2, "item": { "@id": "https://web-tolk.ru/en/dev", "name": "Joomla extensions" } }, { "@type": "ListItem", "position": 3, "item": { "@id": "/en/dev/joomla-plugins", "name": "Joomla plugins" } }, { "@type": "ListItem", "position": 4, "item": { "@id": "/en/dev/joomla-plugins/wt-pdf-js", "name": "WT PDF.js" } }, { "@type": "ListItem", "position": 5, "item": { "name": "Documentation" } } ] } ``` ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://web-tolk.ru/#/schema/Organization/base", "name": "WebTolk", "url": "https://web-tolk.ru/", "logo": { "@type": "ImageObject", "@id": "https://web-tolk.ru/#/schema/ImageObject/logo", "url": "https://web-tolk.ru/images/webtolk-1080p.jpg", "contentUrl": "https://web-tolk.ru/images/webtolk-1080p.jpg", "width": 1920, "height": 1080 }, "image": { "@id": "https://web-tolk.ru/#/schema/ImageObject/logo" }, "sameAs": [ "https://github.com/WebTolk", "https://github.com/sergeytolkachyov", "https://vk.com/web_tolk", "https://vk.com/webtolkru", "https://tenchat.ru/sergeytolkachyov", "https://t.me/sergeytolkachyov", "https://t.me/webtolkru" ] }, { "@type": "WebSite", "@id": "https://web-tolk.ru/#/schema/WebSite/base", "url": "https://web-tolk.ru/", "name": "WebTolk websites development, Joomla Extensions", "publisher": { "@id": "https://web-tolk.ru/#/schema/Organization/base" } }, { "@type": "WebPage", "@id": "https://web-tolk.ru/#/schema/WebPage/base", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation", "name": "WT PDF.js documentation - WebTolk websites development, Joomla Extensions", "description": "A general-purpose, web standards-based platform for parsing and rendering PDFs.", "isPartOf": { "@id": "https://web-tolk.ru/#/schema/WebSite/base" }, "about": { "@id": "https://web-tolk.ru/#/schema/ListItem/base" }, "inLanguage": "en-GB", "breadcrumb": { "@id": "https://web-tolk.ru/#/schema/BreadcrumbList/17" } }, { "@type": "ItemList", "name": "Documentation WT PDF.js", "description": "A general-purpose, web standards-based platform for parsing and rendering PDFs.", "numberOfItems": 23, "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation" }, "itemListElement": [ { "@type": "TechArticle", "headline": "Installing and registering WT PDF.js in Joomla", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/installation-registration", "description": "Install the ZIP through Joomla.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/installation-registration" } }, { "@type": "TechArticle", "headline": "WT PDF.js for Joomla: asset reference", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/asset-reference", "description": "All assets, which are JavaScript files registered with Joomla, have type script and type= module .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/asset-reference" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: choose and load a library", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/choose-library", "description": "This works in a frontend module layout, component view or template override.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/choose-library" } }, { "@type": "TechArticle", "headline": "PDF.js latest in Joomla: CDN integration", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/cdn-latest", "description": "wt-pdf-js-latest uses the npm @latest tag, which may change without a plugin update.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/cdn-latest" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: render a PDF on canvas", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/canvas-rendering", "description": "Register your own module with a dependency on the chosen asset.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/canvas-rendering" } }, { "@type": "TechArticle", "headline": "PDF.js in the Joomla administrator", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/administrator-integration", "description": "Automatic registration applies only to the site application.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/administrator-integration" } }, { "@type": "TechArticle", "headline": "PDF.js inline module through Joomla WebAssetManager", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/inline-module", "description": "Use addInlineScript() with a dependency and type= module .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/inline-module" } }, { "@type": "TechArticle", "headline": "PDF.js viewer in Joomla: links and iframes", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/web-viewer", "description": "Each viewer includes its complete UI, local worker and resources.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/web-viewer" } }, { "@type": "TechArticle", "headline": "PDF.js viewer URLs: file, page and zoom", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-url", "description": "The query is ?file=... config=catalog.json ; the fragment is #page=2 zoom=150 .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-url" } }, { "@type": "TechArticle", "headline": "PDF.js JSON profiles in Joomla: file locations", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/user-config-files", "description": "Profiles live in media/plg_system_wtpdfjs-config/ , beside the supplied media/plg_system_wtpdfjs/ directory.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/user-config-files" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: select a JSON profile", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/select-config", "description": "Both viewers use these rules:", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/select-config" } }, { "@type": "TechArticle", "headline": "PDF.js JSON profiles: format and application order", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/json-format", "description": "The root is a flat object of 6.4.299 PDFViewerApplicationOptions (AppOptions) names.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/json-format" } }, { "@type": "TechArticle", "headline": "PDF.js viewer JSON options: reference", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-options", "description": "Types and values apply to the 6.4.299 viewers.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/viewer-options" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: page-width default profile", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/default-profile", "description": "File: media/plg_system_wtpdfjs-config/default.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/default-profile" } }, { "@type": "TechArticle", "headline": "PDF.js: catalogue JSON profile with spreads", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/catalog-profile", "description": "File: media/plg_system_wtpdfjs-config/catalog.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/catalog-profile" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: mobile reading profile", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/mobile-profile", "description": "File: media/plg_system_wtpdfjs-config/mobile.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/mobile-profile" } }, { "@type": "TechArticle", "headline": "PDF.js: dark theme and viewer language", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/dark-theme-locale", "description": "File: media/plg_system_wtpdfjs-config/reader-dark.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/dark-theme-locale" } }, { "@type": "TechArticle", "headline": "Large PDFs in Joomla: PDF.js partial loading", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/large-pdf-profile", "description": "File: media/plg_system_wtpdfjs-config/large-document.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/large-pdf-profile" } }, { "@type": "TechArticle", "headline": "PDF.js: a profile with PDF scripting disabled", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/disable-pdf-scripting", "description": "File: media/plg_system_wtpdfjs-config/read-only.json .", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/disable-pdf-scripting" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: multiple JSON profiles", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/multiple-profiles", "description": "A catalogue can use config=catalog.json, a mobile layout config=mobile.json, and another section its own file.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/multiple-profiles" } }, { "@type": "TechArticle", "headline": "PDF.js in Joomla: errors and troubleshooting", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/troubleshooting", "description": "JSON is awaited for up to five seconds.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/troubleshooting" } }, { "@type": "TechArticle", "headline": "Updating WT PDF.js in Joomla and keeping settings", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/updates", "description": "Updates replace media/plg_system_wtpdfjs/ files, including the library, viewers and loader.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/updates" } }, { "@type": "TechArticle", "headline": "Joomla and PDF.js: APIs and developer documentation", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/api-references", "description": "This documentation matches WT PDF.js 6.4.299 source.", "mainEntityOfPage": { "@type": "WebPage", "url": "https://web-tolk.ru/en/dev/joomla-plugins/wt-pdf-js/documentation/api-references" } } ] } ] } ```