mktbox: free marketing tools

QR codes, UTM links, link previews, Google title checks, speed and vibe code audits for the page you're on. Free, no account.

Free marketing tools for the page you're on. No account, no paywall, nothing to upgrade. Click the mktbox icon on any page and pick what you want to make: • A QR code for the page. Download it as a PNG, or open it in the full QR generator to add your logo, colors and a frame. It never expires. • A tagged UTM link: source, medium and campaign, with suggestions as you type. Copy it, or turn it into a QR code in one click. • Check the page before you share it: see how its link preview looks on LinkedIn, X and WhatsApp, see how its title and description look in Google (and what to fix), run a speed audit, or run a vibe code audit on apps built with Lovable, Base44 or Bolt (SEO, security and speed). Right-click for more: • Selected text: score it as a headline, check how easy it is to read, or find keyword ideas for it. • A link: check its preview or make a QR code for it. • An image: resize it for every social size at once, or turn it into a subtle animated GIF. Made by mktbox.xyz, a set of free, open source marketing tools for marketers, founders and creators. Privacy: the extension only sees a page when you open it or use the right-click menu there. Nothing is stored or sent unless you click to open a tool. Full policy: https://mktbox.xyz/privacy