# Show HN: No ads and noise from any page, get a clean AI reformat in one click

> Source: <https://code.intellios.ai/cwsum/>
> Published: 2026-06-30 05:14:30+00:00

# cwsum

A Chrome extension that summarizes and reformats any webpage with AI — with full bilingual support for English and Chinese output.

cwsum is a Manifest V3 extension that opens a clean right-side panel on
any webpage. Choose **TL;DR** for bullet-point takeaways or
**Reformat** for a clean, readable Markdown version of the
full page with images, links, and tables preserved. Both modes support
English and Chinese output, streaming results word-by-word as the AI
generates them. Your API key stays on your machine — no analytics,
no intermediary servers.

from the toolbar or

Cmd+Shift+S

Key stored in Chrome,

never leaves your box

No build step, vanilla JS,

~15 source files

## What it is

cwsum is a Chrome extension that puts AI summarization one click away on any webpage. Click the toolbar icon (or press Cmd+Shift+S) and the side panel opens with a structured summary of whatever you’re reading. The extension extracts the page’s visible text — stripping out navigation, sidebars, ads, and scripts — and sends it to the AI endpoint you configure.

Your API key lives in `chrome.storage.sync`

and is never sent
anywhere except directly to the API endpoint you specify. The extension
has no analytics, no tracking, and no intermediate server. It is a thin
client between your browser and your AI provider. Page content goes from
your tab to the model; the summary goes from the model to the side panel.
Nothing else happens.

## Features

**TL;DR** gives you bullet-point takeaways in under 200 words.

**Reformat** restructures the entire page as clean Markdown with images, links, and tables preserved — like a reader-mode that keeps the good parts. Both stream results live as they’re generated.

`Cached`

badge tells you it came from local storage, with
a relative timestamp (“3m ago”). Click the refresh button
to force a fresh fetch.
`⌘`

`Shift`

`S` on Mac,

`Ctrl`

`Shift`

`S` on Windows and Linux.

`deepseek-v4-flash`

, the cheapest DeepSeek model at
$0.14/M input tokens. Also works with OpenAI, Anthropic endpoints,
or any compatible API.
## Keyboard

Everything is reachable from the keyboard or a single click.

`⌘`

`Shift`

`S`/

`Ctrl`

`Shift`

`S` Open the side panel

## FAQ

`deepseek-v4-flash`

as the default — the cheapest
DeepSeek model at $0.14/M input tokens. You can change the model name
and API base URL in the extension Options.`gpt-4o-mini`

and
update the API endpoint URL if your OpenAI base URL differs. The extension
uses the standard chat completions format.## Install & use

cwsum is a Chrome Manifest V3 extension. It runs in any Chromium-based browser (Chrome 116+, Edge, Brave, Arc). Load it once and it stays out of your way.