AI Text Summarizer

Summarize Text, Files, and Pages in Chrome

Nano Summarizer is an AI text summarizer for active-tab reading. It helps you summarize web pages, readable PDFs, TXT, Markdown, logs, and CSV files without pasting content into a separate web app.

Works with readable text exposed in the active browser tab

What text can Nano Summarizer summarize?

Nano Summarizer is built for content that Chrome can expose as text in the active tab. That makes it useful for articles, documentation, notes, plain text files, Markdown drafts, logs, CSV files, and PDFs with a selectable text layer.

Text

TXT and Markdown

Summarize notes, drafts, outlines, README files, changelogs, and other plain text documents opened in Chrome.

Data

Logs and CSV

Use summaries to detect repeated patterns, notable rows, errors, warnings, or high-level structure before manual inspection.

Docs

PDF and web pages

Summarize readable PDFs, help pages, reports, and long website content when the browser exposes usable text.

Text summarizer prompts to try

The best summary depends on what you are reading. After Nano Summarizer creates the first summary, use follow-up questions to shape the answer around your goal.

"Give me the key points and any caveats."
"What decisions or action items are mentioned?"
"Summarize this for a technical reader."
"What risks, limits, or assumptions appear in this text?"
"Turn this page into a short executive summary."

How Nano Summarizer differs from paste-in text summarizers

Traditional text summarizer websites usually ask you to copy and paste content into a form. Nano Summarizer keeps the reading flow inside Chrome: the source stays open, the side panel shows the result, and follow-up questions stay connected to the active tab.

  • No copy-paste workflow: summarize the tab you already have open.
  • Side-panel context: keep the original text visible while reading the summary.
  • Local AI path: use Chrome built-in browser AI on supported devices.
  • Privacy posture: no transfer of extracted text, questions, summaries, or answers to cloud services.

Practical limits to understand

Image-only documents

If a PDF or screenshot does not contain selectable text, Nano Summarizer may not have enough content to summarize.

Restricted browser pages

Chrome and website security rules can block extension access on some internal, store, or protected pages.

Model availability

Chrome built-in AI support depends on browser version, device support, and local model readiness.

Accuracy

AI-generated summaries can compress too much, miss nuance, or misinterpret context. Important details still need source verification.

AI text summarizer FAQ

Can Nano Summarizer summarize a whole website?

It summarizes the active tab, not an entire multi-page website crawl. Open the page you want to summarize and run the extension there.

Does it store my text?

No. Nano Summarizer does not persist extracted page text, user questions, summaries, or answers in extension storage.

Can it summarize CSV files?

Yes, when the CSV text is opened in Chrome and readable to the extension. For very large files, the summary may focus on visible or extractable text limits.

Use a text summarizer in your browser

Install Nano Summarizer and summarize readable text directly from the active Chrome tab.

Install Nano Summarizer