mktbox: free marketing tools

ExtensionTools

Overview

QR codes, UTM links, link previews, speed and vibe code audits, and GIFs 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 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. • Build a tagged UTM link. Pick where you're sharing it (LinkedIn, Instagram, newsletter, Google Ads…), name the campaign and copy. Turn the tagged link 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, run a speed audit, score the page title, 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, 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

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Details

Version
1.1.0
Updated
October 14, 2026
Flag concern
Size
29.49KiB
Languages
English
Developer
Email
carlos@layerx.xyz
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

mktbox: free marketing tools has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.