Bento Slides: Full PowerPoint alternative in one HTML file
Original: Show HN: Bento - An entire PowerPoint in one HTML file (edit+view+data+collab)
Why This Matters
Single-file presentation tools reduce dependency on cloud platforms and simplify sharing and offline use.
Bento Slides is a self-contained HTML-based presentation tool that combines editing, viewing, data visualization, and collaboration in a single file. It offers PowerPoint-like features including animations, morphing transitions, charts, and speaker notes without external dependencies.
Bento Slides is a browser-based presentation platform that packages an entire slideshow — editor, viewer, data, and collaboration tools — into a single HTML file. The tool supports advanced visual features such as Ken Burns ambient motion effects, morph transitions between slides using stable element IDs, count-up animated numbers, and looping dash-march line animations for timelines and flowcharts. Design guidelines are baked in: a single accent color, a maximum of two typefaces, and 96px side margins are enforced for visual consistency. Speaker notes are embedded directly in the file and travel with it. The platform includes a self-audit checklist prompting authors to verify that numbers are charted where appropriate, that consecutive related slides share morph IDs, that cover slides include at least one motion element, and that drill-down content is considered as state slides. Bento Slides is positioned as a self-sufficient alternative to PowerPoint or Google Slides, requiring no server or external runtime.