OpenSlides, at openslides.dev, is a presentation studio that runs in your browser tab. Paste your notes or load a Markdown file, check the slide-by-slide plan, and pick one of four looks. A first deck needs no AI model at all.

Every slide can move: motion backgrounds, kinetic type, charts that race, maps, diagrams that draw themselves, and widgets the presenter operates, such as sliders, spin wheels and quizzes. The presenter view keeps your notes, the next slide and a timer on your screen.

Each slide's notes become its script. Record it in your own voice, use a voice that runs in the browser, or dub it into another language, then export the deck as an MP4 video. You can also import a .pptx, and export a static .pptx or a PDF.

AI is optional. Add your own key for Anthropic, OpenAI or OpenRouter, or point it at a local model, and the studio shows an estimate before each turn. Decks, images and recordings stay in your browser, and there is no account. OpenSlides is open source under MIT or Apache-2.0.

Key features

• Builds a deck from your notes or a Markdown file, with or without an AI model
• Four looks for the same outline; import a .pptx template as one of them
• Motion backgrounds, kinetic type, live charts, maps and animated diagrams
• Interactive widgets the presenter operates during the talk
• Presenter view with notes, next slide and a timer
• Narrate in your own voice or a browser voice, and dub into another language
• Export as MP4 video, PDF or static .pptx
• Optional AI with your own Anthropic, OpenAI or OpenRouter key, or a local model
• Runs in your browser; decks stay on your device and there is no account
• Free and open source (MIT or Apache-2.0)

Website: https://openslides.dev/
Studio: https://openslides.dev/studio/
Source code: https://gitlab.com/open-slides/openslides