Free tools
Small, free browser tools for WordPress, course platforms and advertising – no sign-up, no backend, calculated entirely in your browser.
Platform Fee Calculator
Compare live what Digistore24, ablefy, CopeCart, Udemy, Hotmart & co. really cost – against your own WordPress course platform with MemberJet.
Open toolAdblock Revenue Loss Calculator
See how much ad revenue adblockers really cost you – and what adblock recovery with Adjet gets you back.
Open toolAdSense Calculator & ads.txt
Estimate your realistic AdSense earnings and generate a correct ads.txt for your domain in seconds.
Open toolCRA self-declaration
Document your security contact and support period under Art. 13(8) of the Cyber Resilience Act: security.txt, readme section and public security details in two minutes, no account needed.
Open tool.htaccess Generator
Assemble redirects, caching rules and security headers into a ready-to-use .htaccess file with a few clicks.
Open toolSchema Generator
Generate valid JSON-LD structured data for FAQ, HowTo and articles – ready to paste straight into your page.
Open toolEmoji Password Generator
Roll an absurd emoji story like 🦄💡🛁 and get a strong password you can actually remember – entirely in your browser.
Open toolHarbour Ipsum: placeholder text generator
Placeholder text with a twist: word worlds from harbour to law firm, realistic word lengths, layout building blocks – and export as ready-made WordPress blocks.
Open toolMissing a tool?
Tell us which free tool you miss in your daily work – we keep building more tools for the hafenstudios family.
The tools grow out of our work on our WordPress plugins. Take a look at Linkjet, MemberJet and Adjet
No time to fix it yourself? Our WordPress agency starts on urgent errors within four hours on business days. See agency services and prices
