Present PDFs from the browser: upload to start a slideshow or validate Presio sidecars. No auth.

🛠️ Key Features

Upload PDFs directly in the browser
Start a slideshow from uploaded documents
Validate Presio sidecars alongside PDFs
No authentication required for access

🚀 Use Cases

Quick in-browser presentation of PDF documents
Local validation of Presio sidecar files
Lightweight workflow for showcasing PDFs without server auth

⚡ Developer Benefits

Simple, auth-free client-side workflow
Clear, browser-based interactions for uploads and previews
Straightforward integration with Presio-related sidecar validation

⚠️ Limitations

No authentication or access control
Descriptive details limited to PDFs and Presio sidecars
Feature set constrained by in-browser operations

{ "type": "object", "properties": { "pdf_base64": { "type": "string", "description": "PDF file contents, base64-encoded" }, "filename": { "description": "Original filename, e.g. deck.pdf", "type": "string" } }, "required": [ "pdf_base64" ], "$schema": "http://json-schema.org/draft-07/schema#" }

{ "type": "object", "properties": { "pdf_base64": { "type": "string", "description": "PDF file contents, base64-encoded" } }, "required": [ "pdf_base64" ], "$schema": "http://json-schema.org/draft-07/schema#" }

Use it from an AI agent

Nothing to install — agents talk to the hosted service directly:

MCP — connect to https://presio.xyz/mcp (streamable HTTP, no auth). Tools: present_pdf, check_pdf.

Claude Code: claude mcp add --transport http presio https://presio.xyz/mcp
Claude.ai, ChatGPT, Cursor, …: add a custom connector / MCP server with that URL

REST — curl -F file=@deck.pdf https://presio.xyz/api/present returns a link; opening it in a browser starts the presentation.

Agent docs — llms.txt · AGENTS.md · api.md · OpenAPI

Demo

Features

Local by default — your PDF stays in the browser and is never uploaded. Works offline; local presentations are kept for up to 7 days.

Controller + viewer — drive slides from the controller window while a viewer window mirrors it, kept perfectly in sync.

Present across devices — log in and sync online to get a 6-character session code. Viewers enter it on the home page and follow along live over WebSockets.

Shared control — hand out a controller passphrase to let someone else drive.

Speaker notes — written next to your current and next slide, rendered as markdown.

Embedded media — local videos and GIFs, direct video URLs, and YouTube/Vimeo. Playback, autoplay, and seeking all stay in sync with viewers.

Presentation timer — track how long you've been talking.

Customizable controller — rearrange the layout and remap keyboard shortcuts.

Recent presentations — pick up where you left off from the home page.

Download — anyone can grab the PDF from the presentation view.

Agent APIs — MCP server and REST API for AI agents; see Use it from an AI agent.

Adding videos and speaker notes

The easiest way to attach videos and speaker notes is the Presio Typst package:

typst

#import "@preview/presio:0.2.1": media, speaker-notes

= Introduction

Hello world.

#speaker-notes[
  Remember to mention the demo before moving on.
]

#media("https://www.youtube.com/watch?v=dQw4w9WgXcQ", width: 60%, aspect-ratio: 16/9)

Presio reads the attached media and notes from the PDF automatically. Notes can also be embedded by hand from plain Typst or LaTeX. See the about page for details.

Install

Tools (2)

present_pdfcheck_pdf

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://presio.xyz/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "presio": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://presio.xyz/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

pdf_base64	string	required	PDF file contents, base64-encoded
filename	string	optional	Original filename, e.g. deck.pdf