Reference
Plain-English definitions of the file formats, JavaScript libraries (PptxGenJS, dom-to-pptx, html2canvas), and concepts behind converting webpages and HTML into editable PowerPoint and Google Slides decks. Open any term for the full definition and related tools.
PPTX is the default file format for Microsoft PowerPoint presentations introduced in PowerPoint 2007. It is part of the Office Open XML (OOXML) family and stores slides, layouts, media, and metadata as a ZIP archive of XML files.
Full definition →Microsoft PowerPoint is a presentation software application made by Microsoft. It uses .pptx as its native file format and runs on Windows, macOS, the web, iOS, and Android.
Full definition →Google Slides is a web-based presentation program included as part of Google Workspace. It can import and export PPTX files, which is how WebToSlides delivers Google-Slides-ready decks.
Full definition →Office Open XML is a zipped, XML-based file format developed by Microsoft for office documents. It defines .docx (Word), .xlsx (Excel), and .pptx (PowerPoint), and is standardized as ISO/IEC 29500.
Full definition →Webpage to PowerPoint conversion is the process of turning the content of a public URL into an editable .pptx presentation. WebToSlides extracts the article body, builds an outline, and renders native slides — not screenshots.
Full definition →HTML to PPTX is the process of converting raw HTML markup into a Microsoft PowerPoint .pptx file. The resulting deck is editable, with text, lists, code blocks, and tables mapped to native PowerPoint shapes.
Full definition →Outline-first generation is a workflow where the AI proposes a slide outline (titles + key points) before producing finished slides. The user can edit, reorder, or remove slides before any rendering happens.
Full definition →Speaker notes are private text attached to each slide that only the presenter sees. WebToSlides automatically generates speaker notes from the source content so the deck is presentation-ready.
Full definition →Batch conversion is the process of converting many URLs or HTML files into PowerPoint decks in a single job. WebToSlides supports batch jobs of up to 500 URLs on the Team plan and via the API.
Full definition →HTML (HyperText Markup Language) is the standard markup language for documents on the web. WebToSlides parses HTML's semantic structure — headings, lists, tables, code blocks — to produce editable PowerPoint slides.
Full definition →Apple Keynote is the presentation application included with macOS, iOS, and iCloud. Keynote opens .pptx files natively, which is how WebToSlides decks reach Mac and iPad users.
Full definition →LibreOffice Impress is the free, open-source presentation application from The Document Foundation. It opens and edits .pptx files natively, providing a cross-platform alternative to PowerPoint.
Full definition →A slide template is a reusable visual style that defines the layouts, colours, fonts, and master slides of a presentation. WebToSlides applies a template at conversion time so generated decks match a chosen visual style.
Full definition →A brand kit is a saved bundle of brand assets — logo, primary colours, secondary colours, typography — used to keep generated decks consistent with company branding.
Full definition →DrawingML is the XML vocabulary inside Office Open XML used to describe shapes, text, charts, and tables in PowerPoint, Word, and Excel documents.
Full definition →PptxGenJS is an open-source JavaScript library for generating Microsoft PowerPoint (.pptx) files programmatically. It runs in Node.js and the browser and writes valid Office Open XML output that opens editable in PowerPoint, Keynote, LibreOffice Impress, and Google Slides.
Full definition →dom-to-pptx is a client-side JavaScript library that converts any HTML element (or array of elements) into a fully editable PowerPoint .pptx file. Released in 2026, it is built on top of PptxGenJS and preserves gradients, shadows, rounded images, and SVG vectors with high fidelity.
Full definition →html2canvas is an open-source JavaScript library that takes a screenshot of an HTML element by re-rendering it onto an HTML5 canvas. It is widely used as a building block in client-side document exporters, including dom-to-pptx, where it provides raster fallbacks for elements that cannot be mapped to native PowerPoint shapes.
Full definition →An AI Overview is a generated answer that appears at the top of a search results page, citing one or more web sources. WebToSlides optimises its content for AI Overview citation by using clear question-answer structure and Speakable schema.
Full definition →Speakable is a schema.org property that flags sections of a page suitable for text-to-speech rendering by voice assistants and AI engines. WebToSlides marks TL;DR paragraphs and FAQ answers as speakable.
Full definition →llms.txt is an emerging convention (https://llmstxt.org) that gives large language models a curated, markdown-formatted index of the most important content on a website. WebToSlides publishes both /llms.txt and /llms-full.txt.
Full definition →Hreflang is an HTML attribute (and HTTP header) that tells search engines which language and regional version of a page to serve to which audience. Used together with rel=alternate, it prevents duplicate-content issues across translated pages.
Full definition →A canonical URL is the preferred address of a page, declared via a rel=canonical link element. It tells search engines which URL should be indexed when the same content is reachable at multiple paths.
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