Free checks for your website, email and AI assistant

• KDP print check and cover size calculator

  Page size, bleed, page count and margins of your book PDF, plus the paperback cover size. Your file never leaves your browser.

• Domain check: email, website security and SSL in one run

  Three technical checks with one input, plus the one check no tool can run for you: restore a backup.

• Email domain check (DMARC and SPF)

  Can someone send email in the name of your domain? Runs in your browser.

• Website security headers check

  HSTS, CSP, framing, referrer policy, https redirect and software disclosure, in plain words.

• SSL certificate and domain expiry check

  Who issued the certificate, days left, name match, TLS version and when the domain registration ends.

• Accessibility quick check

  Seven automatic checks on the page HTML. A quick look, not an accessibility audit.

• EPUB accessibility check (EPUBCheck and Ace)

  Upload an EPUB: format errors, accessibility violations by impact and missing accessibility metadata. The file is deleted right after the check.

• AI assistant disclosure self-check

  A short questionnaire for chatbots and voice assistants (EU AI Act Article 50). Runs in your browser.

Every tool is an automatic check with limits stated on its page. None is an audit, a compliance assessment or legal advice. For help with what a check finds, write to us, in writing. Romanian public institutions: the same tools in Romanian on devaland.cloud.