PRIVACY

Privacy Policy

Effective and last updated:

Your document files

The free tools process images and PDFs locally in your browser without uploading them. Optional Pro processing is described separately below. If you use a browser share or print action, the browser and operating system handle that action under their own controls.

Accounts and optional Pro processing

Free tools do not require an account. Paid features require a verified sign-in through an email link, or Google when offered. We store account information, session records, orders, credit entries and task status. Session records include your IP address and browser/device user-agent and expire after 30 days. If you choose Google sign-in, we store your Google profile name, email and image and the authentication tokens needed for that connection. Stripe handles payment details; LensUp does not receive your card number. Email sign-in links are delivered through Resend.

Before Pro uploads a selected page, we show a cloud-processing notice and its credit cost. Image Pro sends the page through LensUp to Mathpix. When available, PDF Pro sends selected rendered pages through the configured model service; the tool identifies that service before use. Original PDFs are not uploaded by this flow. Temporary page images and Markdown results are stored privately on Cloudflare R2, available to the owning account for up to 24 hours, and then scheduled for deletion. Account, billing and task metadata are stored in Cloudflare D1. Provider processing is subject to the provider’s own retention policies; our 24-hour limit describes LensUp’s temporary storage.

Website analytics and cookies

LensUp uses Google Analytics to understand aggregate visits and improve the site. Google may receive technical visit information such as IP address, browser, device, referring page and interaction events. Site analytics start when you open a page and continue unless you reject them, so measurement is on by default. You can reject analytics at any time through Cookie settings. Rejecting clears the analytics cookies from this device and stops both cookie-based analytics and the product interaction events; a cookieless measurement signal for the page view is still sent. Advertising cookies are covered separately below.

Advertising

LensUp shows advertising supplied by Google AdSense. Ad revenue is what keeps these tools free and free of sign-up.

Third-party vendors, including Google, use cookies, web beacons, device identifiers and similar technologies to select, deliver, measure and report on those ads. Google’s use of advertising cookies enables Google and its partners to serve ads to you based on your visit to LensUp and to other sites on the internet. These vendors — not LensUp — decide what those technologies collect, and their processing is governed by their own policies.

A current list of the vendors Google may work with, and a description of what Google collects through them, is published in How Google uses information from sites or apps that use our services.

Your choices

What advertising never receives

Free-tool documents stay in your browser. Documents and results submitted to Pro are not sent to advertising or analytics vendors. LensUp does not send an email address, phone number, name or any other directly identifying information in an ad request, and does not build or use audience lists based on health, religion, sexual orientation or other sensitive categories.

Visitors in the EEA, the UK and Switzerland

If you are in the European Economic Area, the United Kingdom or Switzerland, advertising and analytics cookies are set only after you give consent through the consent banner, and you can withdraw or change that consent at any time through Cookie settings. Until you choose, LensUp serves only non-personalised ads and sets no advertising cookies.

Children

LensUp is a general-audience tool and is not directed to children under 13, or the equivalent minimum age where you live. We do not knowingly collect personal information from children, and we do not use interest-based advertising on content directed to children.

Local browser storage

LensUp may store settings, consent choices and recoverable work state in your browser. This information stays on that device unless your browser synchronizes it. You can remove it with your browser’s site-data controls.

Messages you send

If you contact us, we receive the address and content you provide so we can respond and investigate. Please do not send identity documents or other sensitive files.

The Feedback form in the footer works the same way, by email. A submission contains the message you typed, the category you picked, and — stated in the form itself — the address of the page you were on, the interface language, and your browser version. An email address is optional and is used only to reply to you. The submission is delivered to our inbox through Resend, a transactional email provider acting as our processor; it is not stored in any database of ours, and using the form sets no cookies. If you prefer, write to us directly instead.

Infrastructure

The site is hosted on Cloudflare Pages and served through Cloudflare’s network. As the hosting and network provider, Cloudflare processes connection data such as your IP address and request headers in order to deliver pages and to protect the site from abuse. That processing is technically necessary to serve a website at all and happens for every visitor, including one who refuses optional cookies. Cloudflare acts as our processor and does not receive the files you open in LensUp, because those never leave your browser.

How long data is kept

Account, payment and credit records are kept for account operation, support and reconciliation. Temporary Pro documents have the separate 24-hour limit above. Sign-in links expire after 15 minutes and are consumed once; sessions expire after 30 days without renewal or are revoked on sign-out. Contact us to request account deletion or discuss a refund. We will explain any payment records that must remain before completing the request.

Your rights

Depending on where you live, you may have the right to access the personal data we hold about you, to have it corrected or deleted, to object to or restrict processing, to withdraw a consent you gave, to receive your data in a portable form, and to opt out of the sale or sharing of personal information or of targeted advertising. To exercise any of these, email write@lensup.ai and say which right you are exercising. We do not charge for this and we will not treat you differently for asking.

Two practical notes. First, because documents on the free path are never uploaded, an access or deletion request cannot return a scan — there is nothing to return; a Pro account (e-mail address, credit ledger, run log) can be deleted on request. Second, the fastest route for advertising and analytics is usually direct: Cookie settings in the footer of any page changes your choice immediately, and the vendor opt-out links above reach further than we can on your behalf.

If you are in the EEA or the UK and think we have handled your data improperly, you may also complain to your national data protection authority.

At a glance

Changes to this policy

When this policy changes materially we update the date at the top of the page. Where a change requires your consent under applicable law, we will ask for it before the change takes effect rather than relying on the updated date alone.

Contact

For a privacy question or request, email write@lensup.ai.