DarnlyFree launch and domain tools for vibecoders
For the stretch between “it works on my machine” and a site real people use. Run a launch check for the basics, test page speed, accessibility and broken links, see how pages look on phones, and confirm your SSL certificate and PWA setup. Find and check a domain name, see what any other site is built with, and write redirect rules for your host. There are generators for a privacy policy and a cookie banner too, as starting points you should read and adjust for your own app.
- Launch checkerIs your site ready to launch? Title, share preview, favicon, sitemap, 404 and more, with fixes.
- Tech stack finderSee what any website is built with, where it’s hosted and which analytics it uses.
- Privacy policy generatorA plain-English privacy policy and terms for your app, naming the services you use. Not legal advice.
- Cookie banner generatorDesign a cookie consent banner live and copy a tiny snippet that holds back analytics until people agree.
- Page speed checkerWhy is my site slow? Phone and laptop scores, a load filmstrip and the top 3 fixes as prompts.
- Accessibility checkerAn accessibility score for your site, with the HTML behind each problem, a one-line fix and one prompt for your AI agent.
- SSL checkerIs your certificate valid? Days left, who issued it, whether www is covered, and its history.
- Broken link checkerFind every dead link and missing image on your site, with the page it’s on, and fix them with one prompt.
- Redirect generatorOld and new URLs in, redirect rules out for Vercel, Netlify, Cloudflare, Next.js, nginx and .htaccess. Loops and chains in red.
- PWA checkerSee the “Install app” sheet and home-screen icon your site would get, what’s missing, and a ready manifest to fix it.
- Domain name finderType a project name, see if it’s free on .com, .dev, .app, .io, .ai and .co, and get name ideas checked live.
- Responsive checkerSee any page at phone, tablet and desktop widths side by side.
- NewDomain checkerWhy isn’t my domain working? DNS records, host, https and redirects, with a plain fix for each.
Questions
Are these tools really free?
Yes. Every tool on darnly.dev is free, with no sign-in and nothing to install. They are made by Darnly, a free Chrome extension and Mac app that turns a bug you see on screen into context your AI coding agent can fix.
What should I check before I launch?
Start with the launch checker: it looks at your title, share preview, favicon, sitemap, 404 page and more, and tells you how to fix each one. Then run the page speed and accessibility checkers, and the broken link checker once your pages are live.
Is the generated privacy policy legally enough?
It is a plain-language starting point, not legal advice. Read it, make sure it matches what your app really collects and which services it uses, and ask a lawyer if you handle sensitive data or sell in places with strict privacy laws.