UD5 Toolkit
HTML Boilerplate Generator – Custom HTML5 Skeleton
Configure a modern HTML5 boilerplate with your choice of meta tags, social media cards, favicon links, and CSS/JS includes. Download or copy the code.
Tag: Meta Tag Tools - HTML Head
11+ toolsViewport Meta Tag Simulator - Online Test Mobile Rendering
Change the viewport meta tag and see how a page would render at different device widths. Understand responsive basics.
Link Preview Analyzer - Online See Open Graph & Meta of Any URL
Paste a URL and see the og:title, description, image, and twitter card that will be used when shared. No server needed.
SEO Title & Meta Optimizer - Online Pixel Width Preview
See how your page title and description will look in Google SERP. Check pixel width and character count. Local tool.
Social Card Meta Tester - Online See Facebook, Twitter, LinkedIn Previews
Enter a URL and see live mocked previews for Facebook, Twitter, LinkedIn, and Slack based on its meta tags. Find missing tags.
HTML Meta Inspector - Online View All Page Meta
Paste a URL and extract all meta tags, Open Graph, Twitter Cards, and JSON‑LD. View in a friendly table. Client‑side fetch.
color‑scheme Meta Generator - Online Dark/Light Opt‑in
Generate the <meta name='color‑scheme'> tag and CSS property to enable native dark/light rendering. Quick copy.
Open Graph Image Maker - Online Simple OG:Image Text
Create a basic Open Graph image with a title, background color, and logo. Download as PNG. Perfect for small sites.
HTML Head Snippet Generator - Online Meta, CSS & JS Starter
Generate a complete <head> section with meta charset, viewport, SEO, favicon, and social tags. Customize and copy.
Meta Viewport Generator - Online Responsive Tag Builder
Build a proper <meta name='viewport'> tag with width, initial‑scale, and user‑scalable options. Avoid common mobile rendering issues.
Open Graph Generator - Online OG Meta Tags Builder
Build perfect Open Graph meta tags for rich social media previews. Preview how your link will look on Facebook and LinkedIn. Structured data tools for better CTR.