AI Text Summarizer
Summarize long articles, essays, and text blocks 100% locally in your browser using Chrome Gemini Nano.
Chrome Built-in AI Required
This tool requires Chrome's experimental **built-in on-device Summarizer API** (Gemini Nano) to run text summaries 100% locally.
- Open **Google Chrome** (version 127 or newer, Dev/Canary channel recommended).
- Navigate to
chrome://flags/#optimization-guide-on-device-modeland set to Enabled BypassPrefRequirement. - Navigate to
chrome://flags/#prompt-api-for-gemini-nanoand set to Enabled. - Relaunch Chrome.
- Navigate to
chrome://components, find **"Optimization Guide On Device Model"**, click **Check for update**, and wait for the model to download.
How to use this tool
Zero Server Latency
This summarizer works entirely in your browser client-side. Because it uses your local graphics card or CPU via Google Chrome’s built-in on-device Gemini Nano model, your text is never uploaded to any server.
How to Summarize Text Locally
Set your configuration details and extract core points in milliseconds.
Paste Text
Input or paste the article, documentation, or notes you want to condense.
Choose Type & Length
Select the format (Key points, TL;DR, or paragraph) and length (Short, Medium, Long).
Summarize Off-Grid
Press Summarize to run the local Gemini Nano model and get a secure summary instantly.
Frequently Asked Questions
Understanding client-side on-device summarization.
How does on-device summarization work?
Recent versions of Google Chrome (v127+) support built-in hardware-accelerated AI models (Gemini Nano) that execute directly on your computer’s OS layers. The browser exposes a window.ai.summarizer API, allowing this site to perform AI actions without sending API requests.
What are the maximum input length limitations?
Gemini Nano has a context window of around 4,000 tokens (roughly 3,000 words). If you paste extremely long documents, the model might truncate the input. For best results, paste articles under 2,500 words at a time.
Privacy & Safety Policy
All tools run completely in your browser via client-side JavaScript. We do not upload your files, interest parameters, or JSON payloads to any server. Your data remains yours.