What leaves your computer, and what does not.

The checker

When you drop files on the home page, they are read by JavaScript in your browser tab and checked there. They are not sent anywhere. That page loads only this site’s own files: no analytics and no other third-party script. Its security policy (set in the page’s headers and repeated inside the page) lets it connect only to this site, which serves static files and has nothing that accepts an upload, so the page could not send your files to another server even by mistake.

Check it yourself: open your browser’s developer tools, switch to the Network tab, and drop a board. You will see only this site’s own files load, and no request carrying your data.

Visit counting

Every page except the checker counts visits and clicks on its main buttons with a small script of mine, hosted on my own Cloudflare Worker. It records which page was opened and the name of the button clicked. The checker page does not load it, and that page’s security policy has no entry for it, so the browser would refuse to run or contact it even if it were added by mistake. The cost is that visits to the checker page itself are not counted. The pages that do load the counter have no way to pick files from your computer.

One thing does pass from the checker to a counted page: the “Send me your board” button carries a short summary of the check in the page address after a #, which a browser never sends to a server. It holds rule counts and no part or net names. The request form page, where the counter runs, can see that address. The summary is sent with your request only if you tick its box.

The request form

Your email, name, project link and note are used to reply to you and to carry out the review. I do not sell them and do not add you to a mailing list.

Files you send for a paid review

I use them for your review only. I delete them thirty days after I deliver the report unless you ask me to keep them. I do not publish a paid review. Open-source reviews are published only with your yes, and only about the public repository you pointed me to.

Payments

Payments go through Stripe payment links. I never see card numbers.

JLCPCB

To check part rotation I load your fab files (Gerbers, BOM, placement) into JLCPCB’s own order tool, the same place you would upload them, and look at the placement preview. I do not place an order. JLCPCB handles those files under its own privacy policy.