stuffonscreen.

Free website tools.

Check your website, email setup and links. Get a report with recommended fixes.

Runs the site health, email, AI visibility and link preview checks together. You can also check redirects and email headers using the tools below.

All tools

NewFor any website

Site health check

Check domain and certificate renewal dates, security, broken links and page speed.

Check my site
NewFor any website

AI visibility

Check whether ChatGPT, Claude, Perplexity and Google’s AI can read your site.

Run a check
NewFor any business

Email deliverability

Check your domain’s SPF, DKIM and DMARC records and see any recommended changes.

Check my email
For email that went to spam

Email header check

Review an email’s authentication results, sending servers and spam-filter details.

Check the headers
NewFor anything you share

Link preview check

Preview how a page appears on iMessage, WhatsApp, Facebook, LinkedIn, Slack and X.

Check a link
NewFor site moves

Redirect checker

Check where old URLs redirect and identify chains, loops and broken links.

Check redirects