# Summarizer

> Summarize URLs, PDFs, YouTube videos, and text content - extract key points and generate concise summaries

- Skill: `chainlesschain/summarizer` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add chainlesschain/summarizer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/chainlesschain/summarizer/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- License: MIT
- Author: chainlesschain (https://skillmd.com/u/chainlesschain)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/chainlesschain/summarizer

---


# Summarizer

Summarize URLs, text, files, and YouTube videos with key point extraction.

## Usage

```
/summarizer summarize-url <url>
/summarizer summarize-text <text content>
/summarizer summarize-file <file path>
```

## Actions

| Action | Description |
| --- | --- |
| `summarize-url` | Fetch and summarize content from a URL (web pages, YouTube) |
| `summarize-text` | Summarize provided text content directly |
| `summarize-file` | Read and summarize a local file |

## Features

- Extracts key points as a structured array
- Calculates word count and estimated reading time
- Handles HTML content by stripping tags
- YouTube video ID detection for transcript-based summarization
- Supports plain text, HTML, and Markdown files

## Examples

- Summarize a web article: `/summarizer summarize-url https://blog.example.com/post`
- Summarize text: `/summarizer summarize-text "Long text content here..."`
- Summarize a local file: `/summarizer summarize-file ./docs/report.txt`