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SPECIFICTION
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Casual Slides

github.com

Free plan WebSelf-hosted
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Spec score 7.8 #59 of 93 in Presentation software

Spec sheet

Product
Casual Slides is an open-source, self-hostable, browser-based presentation editor designed to look and behave like Microsoft PowerPoint.Read 11 Oct 2026 · github.com
Integrations
The project is built on the open-source Univer Slides packages and exports PowerPoint files using PptxGenJS.Read 11 Oct 2026 · github.com
Support
The editor includes a Help option that can prefill a GitHub bug report.Read 11 Oct 2026 · github.com
License
The repository identifies Casual Slides as open source under the Apache-2.0 license.Read 11 Oct 2026 · github.com
AI assistance
NoRead 20 Sep 2026 · github.com
Audience and limits
The project targets desktop browsers and explicitly lists mobile support and complete PowerPoint feature parity as non-goals for v0.0.x.Read 11 Oct 2026 · github.com
Browser processing
PowerPoint file parsing and serialization run in Web Workers so multi-megabyte decks do not block the main thread.Read 11 Oct 2026 · github.com
Collaboration limit
Co-editing is described as a single-active-editor spike, and the planned Yjs and Hocuspocus migration is not yet implemented.Read 11 Oct 2026 · github.com
Data and persistence
The repository says v0.0.x has no persistence or accounts and uses anonymous sessions identified by room URL; rooms are held in memory and are lost when the container restarts.Read 11 Oct 2026 · github.com
Editing features
The editor includes an Office-style ribbon, slide thumbnails, six layout templates, themes, solid and gradient backgrounds, speaker notes, and slideshow mode.Read 11 Oct 2026 · github.com
Export
The project description lists PDF and PNG export among its implemented features.Read 11 Oct 2026 · github.com
PowerPoint export
YesRead 20 Sep 2026 · github.com
PowerPoint files
It can open and save .pptx files and aims to preserve presentation content through OOXML round-tripping.Read 11 Oct 2026 · github.com
PowerPoint import
YesRead 20 Sep 2026 · github.com
Presenter mode
YesRead 20 Sep 2026 · github.com
Real-time collaboration
NoRead 20 Sep 2026 · github.com
Round-trip fidelity
The repository reports 68 of 87 presentation fidelity probes passing in its wave 7o snapshot.Read 11 Oct 2026 · github.com
Security and compliance
The repository describes the self-hosted runtime but does not state security certifications or compliance attestations.Read 11 Oct 2026 · github.com
Self-hosting
The repository provides Docker and Docker Compose instructions for running the web app and WebSocket relay on one port.Read 11 Oct 2026 · github.com
Supported platforms
web; desktop browsers; self-hostedRead 20 Sep 2026 · github.com

Plans and prices

Open-source self-hosted Free Self-hosted web editor · Desktop browsers only · Collaboration is a single-active-editor spike Read 11 Oct 2026 · github.com

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