Banana Slides is an open-source, AI-native presentation generator with more than 15,800 stars on GitHub that turns a single sentence, an outline, or page-by-page descriptions into a complete slide deck within minutes.
Most slide tools treat AI as an add-on that fills in text boxes. Banana Slides works the other way around: it is built on image generation models such as Nano Banana Pro and GPT Image, rendering each slide as one coherent, visually consistent page rather than a pile of separate elements. You can start from a one-line idea, a structured outline, or a description of every page, and the app generates the full deck for you. It also parses uploaded material intelligently — bring your own template image, documents, or existing slides, and it extracts the content and rebuilds the presentation in a fresh design. When something is off, you describe the fix in plain language, even selecting a specific region of a page to redraw, instead of fighting with layout tools. The project is actively developed, with the repository updated in 2026, and it is released under the AGPL-3.0 license, so the code is fully open to inspect, self-host, and extend.
Banana Slides is free and open source under the AGPL-3.0 license: you can run it yourself at no cost, supplying your own image-generation and LLM API keys. A hosted online edition is in closed beta testing by invitation, but the self-hosted open-source version is the complete product.
Teachers, students, marketers, founders, and anyone who needs polished slides fast but does not want to wrestle with traditional presentation software — especially people who think in outlines and would rather describe a deck than design one.