Summarize 📝 — Link in, signal out.

Summarize extracts clean text and produces summaries from web pages, files, YouTube videos, podcasts, and other audio or video. Use it from the Node.js CLI or from the Chrome Side Panel and Firefox Sidebar.

Summarize extension screenshot

$ summarize "https://example.com" --extract --plain
This domain is for use in documentation examples without needing permission. Avoid use in operations.
[Learn more](https://iana.org/domains/example)

Install

Run it once without installing:

npx -y @steipete/summarize --version

Or install the CLI with npm or Homebrew:

npm install --global @steipete/summarize

brew install summarize

The npm package requires Node.js 24 or newer. Homebrew/core and the macOS archives on GitHub Releases provide standalone builds. See the installation guide for optional media tools and platform notes.

Quick start

Extract readable content without an API key:

summarize "https://example.com" --extract --plain

For a model-generated summary, configure a supported provider or use an authenticated coding CLI:

summarize "https://example.com" --cli codex

The default auto model chooses among configured providers. The five-minute quickstart covers API keys, local models, files, YouTube, podcasts, and JSON output.

Languages

The CLI and Chrome/Firefox extension interfaces support English, German, French, Spanish, Italian, Brazilian Portuguese, Dutch, Polish, Russian, Japanese, Simplified Chinese, Traditional Chinese, Korean, and Turkish.

The interface follows your system or browser language, with English as the fallback. Use --locale de or SUMMARIZE_LOCALE=de for German CLI help and progress, or select Interface language in the extension’s options. Summary language stays independent:

summarize "https://example.com" --locale de --language japanese

The localization guide covers locale selection, translation glossaries, adding languages, and the CI checks that keep catalogs complete.

What it handles

Input	Processing path
Web pages	Readability extraction, with optional Markdown and Firecrawl fallbacks
PDFs, images, and text files	File-aware extraction and model attachments where supported
YouTube and podcasts	Published transcripts first, then configured transcription fallbacks
Audio and video	Local or cloud transcription, with optional speaker labels
Video slides	Scene-based frames, optional OCR, and timestamped output

Use --extract when you only need clean content, --json for a stable automation envelope, and --slides for video frames. The command reference documents every flag.

Summarize CLI screenshot

Browser extension

Install Summarize Side Panel from the Chrome Web Store to summarize the active tab, chat with its content, and work with video transcripts and slides.

Direct mode runs without a companion service. Browser media uses Chrome capabilities for local transcription and slide extraction; the optional daemon adds CLI model backends, native media tools, OCR, shared caches, and Firefox media support.

To pair the installed CLI, copy the token shown by the extension and run:

summarize daemon install --token <TOKEN>

See the extension setup and architecture and troubleshooting guide.

Media and slides

Summarize prefers existing captions and podcast transcripts before it transcribes media. Native ffmpeg, yt-dlp, and tesseract extend codec, YouTube slide, and OCR support; a bundled WebAssembly FFmpeg path covers common media without a native install.

YouTube slide screenshots

The focused guides describe YouTube extraction, media routing, slides, and local ONNX transcription.

Models and configuration

Model IDs use provider/model names. Summarize works with configured API providers, OpenAI-compatible endpoints, Ollama, OpenRouter free models, and authenticated coding CLIs such as Codex, Claude, Gemini, OpenClaw, and GitHub Copilot.

Configuration lives at ~/.summarize/config.json; command-line flags take precedence. Inspect the effective setup without exposing keys:

summarize status

Read the model guide, automatic selection rules, CLI provider guide, and configuration reference for the full setup.

Library

For programmatic extraction without the CLI dependency surface, install @steipete/summarize-core:

npm install @steipete/summarize-core

The package exports focused content and prompt entry points. See the core package README for usage.

Documentation

Start with the documentation index, then follow the guide for your task:

Installation and quickstart
Commands and configuration
Website extraction and Firecrawl fallback
YouTube, media, and slides
Agent skill for automated workflows

Development

Requires Node.js 24 and pnpm 11.25.0.

pnpm install --frozen-lockfile
pnpm build
pnpm check

See CONTRIBUTING.md for repository layout and extension workflows.

License

MIT. See LICENSE.