DocsUser ExperienceHTML & Image Rendering Guide
Master Docs Hub Index
User Experience • Rendering

Rendering HTML & Inline Images Across Non-GUI Shells

Nuncio provides seamless HTML and image rendering mechanics across Terminal TUI, POSIX CLI, and AI MCP agents without compromising security.

1. Terminal TUI (Ratatui)

Converts HTML to clean ANSI text via `html2text` with tracking pixels blocked. High-resolution images render inline using Kitty Graphics Protocol, iTerm2 Inline Images, or Sixel graphics. Press o to view in system browser.

2. POSIX CLI

nuncio mail show <id> prints formatted plain text. Use --html for markdown output, --raw-html for piping to `w3m`/`lynx`, or --open for browser trigger.

3. AI MCP Agents

Converts HTML to token-efficient Markdown for LLM prompt contexts. Image attachments are passed as Base64 multimodal vision content blocks to Vision LLMs.

Automatic Tracking Pixel & Web Bug Neutralization

Nuncio automatically strips 1x1 tracking GIF/PNG pixels (`<img src="...track..." width="1" height="1">`), remote CSS `@import` triggers, and external script tags before rendering email payloads.