Skip to main content
Browser extension · Free to install

The web has too much noise.
Focus gives you
silence.clarity.depth.understanding.presence.

Highlights, floating notes, a focus timer and a reading queue — all persistent, all local. The web reading tool for people who actually read.

Add to Chrome — Freeby The Arcaneum™ · 0.3 MB · No account needed
Arcaneum Focus reader mode on an article, showing highlights, page notes and the focus timer

Featured on

Arcaneum Focus - A reading companion for curious minds | Product HuntArcaneum Focus - A reading companion for curious minds | Product Hunt
See it work

Every tool you need, right where you read.

Reading, restored.

Turn any article into your personal research space. Highlight, annotate and save to your reading queue — all from one clean reader view.

Reader modeReading queue

Highlights with tags.

Mark what matters in color, add tags and keep your markup organized.

HighlightsTags

Notes that connect ideas.

Add notes, link passages and see the bigger picture right on the page. Watch your thinking take shape as a visual map of connected concepts.

Page notesString connections

Cite with ease.

Get accurate citations in APA, MLA and Chicago format right where you read. Copy them in one click — no switching tabs, no manual formatting.

APAMLAChicago

A PDF viewer that works the same way.

Open any PDF and use the same highlights, notes and citations you use on web articles. PDFs saved on your computer need one setting: see the FAQ.

PDF viewer
Features

Everything a serious reader needs. Nothing they don't.

Focus Mode

Strip the web down to just the article. No sidebars, ads or noise. Pure text, perfect margins, your pace.

Inline Highlights

Six color modes. Select any text, tap a color, done. Works on articles and PDFs.

Floating Notes

Drop notes exactly where they belong. Tether them to paragraphs with connector lines — like digital marginalia.

Focus Timer

Built-in Pomodoro timer. Set 5, 15, 25, 45 or 60 minute sessions without leaving the page.

Reading Queue

Save pages to read later from the popup. One click to open, one click to remove.

Persistent & Local

Everything stays in your browser. No account, no server, no accidental cloud wipe. Your data, your device.

Why we built this
Most reading tools are built for productivity.
Arcaneum Focus is built for understanding.

Speed counters and streak dashboards treat knowledge like a quota. We built something quieter — a reading layer that gets out of the way and lets thought happen.

Get started

Up and running in 60 seconds.

Three steps. No account, no setup.

01
EXTENSION STORE

Open the extension store

Focus installs directly from your browser's official extension store — no download, no account.
Add to Chrome — Free
Extension store listing page for Arcaneum Focus
02
INSTALL

Add it to your browser

  1. 1On the store page, click “Add to browser”.
  2. 2Confirm by clicking “Add extension”.

Access to all sites is what lets Focus work on any page you read.

Chrome sometimes shows this for newer publishers. Arcaneum Focus is our first extension, so we have no track record yet. Focus has no accounts, no servers and no analytics, and everything you save stays on your computer. If you're comfortable, click “Continue to install”. If not, click “Close”.

Read the privacy policy
Browser dialog asking to confirm adding Arcaneum Focus
03
TOOLBAR

Pin it for quick access

Pinning keeps the Focus icon one click away whenever you want to activate reader mode.
  1. 1Click the puzzle-piece Extensions icon in your toolbar.
  2. 2Find Arcaneum Focus and click the pin beside it.
Browser Extensions panel showing Arcaneum Focus with a pin icon

Also works in Chrome, Edge, Brave and Arc.

FAQ

Questions, answered quietly.

Yes. Focus is free for students, educators and researchers, with no account and no catch. If you use it at work for a company, please write to licensing@thearcaneum.org for a commercial license.