Freedom251 › AI Presentation Makers
Slidemason
What Slidemason is
Slidemason is a free, open-source presentation builder that turns prompts and source documents into decks through an AI coding agent. Its browser studio guides users through a seven-step brief, then generates slides from PDF, Markdown, text and image inputs such as screenshots, diagrams and photos. Users can export to PDF or PPTX, although PPTX layouts may require manual rearrangement. The project includes 36 slide primitives for layouts, visuals, data, animation and interactive elements, along with 12 themes, curated font pairings, Google Fonts search and brand controls. Slidemason runs locally, needs no API keys or accounts, and says it does not upload user data. Briefs are stored as JSON and slides as TSX, described as open and inspectable. Compatible coding agents include Cursor, Windsurf, GitHub Copilot and Claude Code. Setup requires Node.js, pnpm and Git, with the studio running at localhost:4200. The MIT-licensed project requires an AI coding tool, which may have its own cost.
Who it suits
Slidemason suits people who want AI-assisted presentations and can use an AI coding tool. Coding knowledge is not required when working through such a tool, but local setup requires developer software.
What it does well
- Free and open source under MIT license
- Runs locally without accounts or API keys
- Accepts documents and images
- Exports PDF and PPTX
- Brand controls and 12 themes
What to know first
- Requires Node.js, pnpm and Git
- Needs an AI coding tool
- PPTX layouts may need rearrangement
- No hosted service is listed
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Slidemason | Free and open source · requires an AI coding tool, which may have its own cost | Free |
As github.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
Slidemason offers local, inspectable deck generation with broad input support and configurable slide building. Its free license is useful, but installation and an AI coding tool remain necessary.
Facts from Slidemason's own pages
- AI integrations
- The maker lists Cursor, Windsurf, GitHub Copilot, Claude Code, and other AI coding agents as compatible tools. · github.com, 11 Oct 2026
- Brand controls
- Yes · github.com, 22 Sept 2026
- Data format
- Briefs are stored as JSON and slides as TSX, which the maker describes as open and inspectable. · github.com, 11 Oct 2026
- Document-to-deck generation
- Yes · github.com, 22 Sept 2026
- Exports
- Users can export decks to PDF or PPTX; the maker cautions that PPTX layouts may need manual rearrangement. · github.com, 11 Oct 2026
- Free plan
- Yes · github.com, 22 Sept 2026
- Input files
- The studio accepts PDF, Markdown, and text source files, plus images such as screenshots, diagrams, and photos. · github.com, 11 Oct 2026
- Intended users
- The maker presents it for people who want AI-assisted presentations and says coding knowledge is not required when using an AI coding tool. · github.com, 11 Oct 2026
- License
- The repository is released under the MIT license. · github.com, 11 Oct 2026
- Local use
- The project says it runs locally, requires no API keys or accounts, and does not upload user data. · github.com, 11 Oct 2026
- PDF export
- Yes · github.com, 22 Sept 2026
- PPTX export
- Yes · github.com, 22 Sept 2026
- Prompt-to-deck generation
- Yes · github.com, 22 Sept 2026
- Purpose
- Slidemason is an open-source AI presentation builder that turns documents into polished decks using an AI coding agent. · github.com, 11 Oct 2026
- Runtime requirements
- The quick start requires Node.js, pnpm, and Git, and runs the studio in a browser at localhost:4200. · github.com, 11 Oct 2026
- Slide building
- The project includes 36 slide primitives for layout, visuals, data, animation, and interactive elements. · github.com, 11 Oct 2026
- Themes and fonts
- It includes 12 themes and supports curated font pairings or searching Google Fonts. · github.com, 11 Oct 2026
- Workflow
- Its browser-based studio guides users through a seven-step brief, which an AI agent reads to generate slides. · github.com, 11 Oct 2026
Where Slidemason stands on Freedom251
- AI Presentation Makers#37 of 109
- AI Presentation Software#47 of 84