Help center.

Add it from the Chrome Web Store in Chrome on a computer.

1. Click Add to Chrome, then Add extension.
2. A welcome page opens. Sign in there, or choose Skip for now.
3. Refresh any tabs you already had open. Lensia can’t reach a page that loaded before it was installed.

Lensia works only in desktop Chrome. There’s no version for Firefox, Safari, Edge or phones.

With a Google account. Click Continue with Google on the welcome page, in the sidebar, or on the Options page under Account. There’s no password and no license key.

Use the Google account you want your plan on. A paid plan belongs to the account you used at checkout.

Click the Lensia icon in Chrome’s toolbar. If you don’t see it, click the puzzle-piece icon and pin Lensia.

You can also press Ctrl+Space, click the Lensia button on the edge of the page, or right-click and choose Ask Lensia.

Open the sidebar on that page and type your question. Lensia reads the page’s text when it needs it to answer.

1. For an overview, click Summarize this page on the sidebar’s start screen.
2. To ask about one part, like a chart or a table, press Ctrl+Shift+X and drag a box around it. With the sidebar open, the area joins your message there.
3. With the sidebar closed, the same shortcut answers in a floating panel on the page. Continue in Chat under the answer moves it into the sidebar.

The sidebar shows which model answered under each reply.

Yes. Open Lensia’s Options page (right-click the toolbar icon, then Options) and go to Shortcuts.

• Select from screen and Toggle floating panel: click the shortcut and press the new keys.
• Open sidebar: Chrome owns this one, so Edit takes you to chrome://extensions/shortcuts to change it.

Click the × on the button and choose Disable on this site or Disable on all sites.

To turn it off everywhere from settings, open Lensia’s Options, go to Sidebar and switch off Always show Lensia icon on page. Sites you disabled one at a time are listed there too, and you can turn them back on.

• Free: limited usage with the Essential models at Instant effort and PDFs up to 2 MB. What Free includes is on the homepage.
• Basic, $3 a week or $8 a month: more usage. Adds web search, Fetch URL, the Advanced models, Medium and High effort, Personalization, and PDFs up to 10 MB.
• Pro, $7 a week or $20 a month: even more usage, but not unlimited. Adds Task, the Frontier models, and PDFs up to 20 MB.

The pricing page has the full comparison.

Anything that sends a request to a model, charged at what that model costs. Lensia measures cost, not number of messages.

• Captures, sidebar messages, page summaries, Explain and Key Points all count.
• Larger models and long pages cost more per request.
• Web searches and page fetches add their own small cost.
• On Pro, Task spends a little checking steps on payment pages.

Opening the sidebar and checking your usage cost nothing. If you stop an answer, you pay only for what was written before you stopped it.

There are two limits, and each resets on its own.

• Session: 6 hours, starting with your first message. When it ends, the next message you send starts a new one.
• Weekly: a fixed 7-day cycle that started with your first request.

The bolt in the sidebar’s bottom-left corner shows how much of the session you’ve used. Hover it to see both limits and when each resets.

Your account page shows the same numbers under Billing.

Wait for the reset or upgrade. The banner above the message box says when the limit resets.

On Free, the banner may also offer a free pool of open-source models. It has a daily cap shared by everyone.

If a Task run hits the session limit partway through, Lensia usually ends it with a short summary of what it did and what’s left, so you can pick it up after the reset.

Monthly, if you’ll use Lensia all month. It works out about 38% less than a month of weekly payments on Basic, and 34% less on Pro. Weekly costs less up front and is easier to stop after a short project.

• Basic: $3 a week or $8 a month.
• Pro: $7 a week or $20 a month.

If you’ve never paid for Lensia, Pro costs $4 for the first week or $12 for the first month. After that it renews at the regular price.

Yes. A paid plan renews every week or every month, matching what you chose, until you cancel. Stripe emails a receipt for each charge.

To stop the next charge, cancel before your billing date.

Choose a plan on the pricing page and sign in with the Google account you use in Lensia.

If you already pay for a plan, Lensia shows what the switch will cost before you confirm. The change is prorated, so you pay only for the time left in your current period.

The extension picks up the new plan on its own. To see it right away, hover the usage bolt in the sidebar and click refresh.

1. Go to your account page and open the Billing tab.
2. Click Manage Billing. Stripe’s billing portal opens in a new tab.
3. Cancel your plan there.

You can also email [email protected] and we’ll cancel it for you.

You keep your plan until the end of the period you’ve paid for, then the account moves to Free.

Sometimes. Payments aren’t refundable unless the law requires it, but we can grant one at our discretion. Email [email protected] within 7 days of the charge, from the account you paid with, and say what went wrong.

Because Lensia can run on any site, and that is how Chrome words the permission. The capture shortcut, the floating panel and the button on the page all need it. So does the sidebar to read the tab you ask about, and Task to act on pages.

The warning describes what Chrome would allow, not what Lensia sends. Lensia sends page content only when you capture, send a sidebar message, summarize a page or give Task a job. What each one sends is below.

For Task, the Pro feature that clicks and types for you. The debugger lets it send real clicks and keystrokes, and take screenshots of a task’s tab while it’s in the background.

Task asks before it clicks, types or opens a page unless you turn on Full access, and even then it asks before paying. The homepage explains what it does without asking.

It depends on what you use, and nothing is sent until you use it.

• Floating panel: the area you selected, cropped on your computer, and anything you typed. On Basic and Pro, also your Personalization settings. Not the page’s text or address.
• Sidebar: your message and the tab’s title and address, with the query string and token-like parts removed. The page’s text too, when you attach the page or Lensia reads it to answer. Nothing from incognito windows or files on your computer.
• Images and PDFs you attach: the whole file.
• Web search and Fetch URL (Basic and Pro): your search queries go to Exa, or to Tavily if Exa can’t answer, and the pages Lensia fetches go to the model.
• Task: the content and real addresses of the pages it reads and acts on. Its screenshots mask private fields first.

Requests go to Lensia’s servers on Cloudflare, then through OpenRouter to the company hosting the model. The privacy policy names them.

• Your chat history stays in Chrome on your computer.
• Lensia’s servers keep usage records (the model, token counts, cost and time) to run your allowance.
• Screenshots and images aren’t saved: requests that carry one are logged without it.
• Other requests, such as sidebar messages and the page text sent with them, can be kept in request logs to improve the service, for up to 3 months. Then they’re deleted or anonymized.

Lensia doesn’t sell your information or use it for behavioral advertising, and doesn’t store your card details: Stripe handles payment.

Chat history is on your computer, so you delete it in the sidebar. Open Chat history, then use the ⋯ menu on a chat and choose Delete, or the trash icon to delete all chats.

To delete your account and the data Lensia’s servers hold, cancel any paid plan first, then email [email protected] from the account’s address.

The sidebar shows one of two notices when it can’t reach the tab.

• “This tab isn’t connected yet. Try refresh.” The tab loaded before Lensia was installed or updated. Click refresh in the notice, or reload the tab.
• “This page isn’t supported.” The tab isn’t a website: a Chrome page (anything starting chrome://), the New Tab page, or a file on your computer. Chrome keeps extensions off its own pages, so switch to a normal tab.

Two places show the first notice but won’t connect after a refresh. The Chrome Web Store blocks every extension. A PDF open in Chrome’s viewer can’t be read either, so download it and attach it with + instead.

Pages you’re signed in to work like any other: Lensia reads what the tab has loaded. If an ordinary site keeps showing a notice after a refresh, tell us which site.

The PDFs in one message can add up to 2 MB on Free, 10 MB on Basic and 20 MB on Pro, with at most five per message.

Split the file, or attach only the pages you need. A larger plan raises the limit.

Check that the extension is signed in with the Google account you used at checkout. The plan belongs to that account. Your account page shows which account and plan you’re on.

If it’s the right account, hover the usage bolt in the sidebar and click refresh. Lensia also checks on its own, and with your next message.

If the account page also shows the old plan, the payment may not have gone through. Manage Billing on the Billing tab shows its status. Still wrong? Email [email protected] with the email on your receipt.

Sign-in opens a small Google window. Finish it there: closing it early shows “Sign-in was cancelled.”, and it times out after 5 minutes.

• Try again from the sidebar or from Lensia’s Options page.
• If the window says “Access denied.”, try another Google account.
• If it says the link has expired, start a new sign-in. Each link works once.

If it keeps failing, email [email protected] with the exact message you see.

Models get things wrong, so check any answer that matters. To get a better one:

• Click Regenerate under the answer for a fresh try.
• Say what was wrong in a follow-up. The model can see the conversation.
• For a capture, drag the box around just the part you’re asking about, and zoom in first if the text is small.
• On Basic and Pro, raise the effort to Medium or High, or pick a larger model in the model picker.

If one kind of question keeps going wrong, tell us at [email protected].