<!-- Primary Meta Tags --> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Free Online Developer Tools — Format, Convert & Generate | Toolz</title> <meta name="description" content="A fast, private collection of 600+ browser-based tools for developers: JSON, PDF, image, text, and more. No signup, no uploads, 100% client-side." /> <meta name="keywords" content="developer tools, json formatter, online tools, free tools" /> <meta name="author" content="Toolz" /> <meta name="robots" content="index, follow" /> <meta name="language" content="en" /> <meta name="theme-color" content="#4466EE" /> <link rel="canonical" href="https://toolz.dev/" /> <!-- Open Graph / Facebook --> <meta property="og:type" content="website" /> <meta property="og:url" content="https://toolz.dev/" /> <meta property="og:title" content="Free Online Developer Tools — Format, Convert & Generate | Toolz" /> <meta property="og:description" content="A fast, private collection of 600+ browser-based tools for developers: JSON, PDF, image, text, and more. No signup, no uploads, 100% client-side." /> <meta property="og:site_name" content="Toolz" /> <meta property="og:image" content="https://toolz.dev/og-image.png" /> <meta property="og:image:alt" content="Toolz — free online developer tools" /> <meta property="og:locale" content="en_EN" /> <!-- Twitter Card --> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:url" content="https://toolz.dev/" /> <meta name="twitter:title" content="Free Online Developer Tools — Format, Convert & Generate | Toolz" /> <meta name="twitter:description" content="A fast, private collection of 600+ browser-based tools for developers: JSON, PDF, image, text, and more. No signup, no uploads, 100% client-side." /> <meta name="twitter:image" content="https://toolz.dev/og-image.png" /> <meta name="twitter:image:alt" content="Toolz — free online developer tools" /> <meta name="twitter:site" content="@toolz" /> <meta name="twitter:creator" content="@toolz" />
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</script>A Meta Tag Generator builds the block of HTML that lives in a page's <head> and tells search engines and social networks how to display your page. You fill in a title, description, image, and a few other fields once, and the tool outputs correctly formatted meta tags — standard SEO tags, Open Graph tags for Facebook and LinkedIn, and Twitter Card tags — that you paste straight into your template. No more hand-typing repetitive property="og:..." lines or forgetting the twitter:card tag.
Getting these tags right matters because they control your search snippet and your link previews. The <title> and meta description shape how your result looks in Google; the Open Graph title, description, and image decide what a shared link looks like in a social feed. This generator keeps all three in sync from a single set of inputs, flags titles and descriptions that run past the length search engines display, and can add a matching JSON-LD block for structured data.
Everything runs 100% in your browser. The URLs, copy, and image links you enter are never uploaded, so you can prepare tags for unreleased pages or internal tools privately. The generator works offline once loaded, and the output is plain HTML you own — copy it, drop it into your framework, and ship.
Fill in the page title and meta description. The character counters and warnings tell you when either runs past the length search engines typically display.
Set the canonical URL, site name, social share image, and Twitter handle so your Open Graph and Twitter Card previews are complete.
Choose the Open Graph type, the Twitter card style, robots directive, and whether to include charset and viewport tags. The output updates live.
Copy the full meta tag block and paste it into your page's <head>. Optionally copy the matching JSON-LD structured-data snippet too.
Generates standard search tags plus Open Graph and Twitter Card tags together, kept in sync from a single set of inputs
Flags titles over ~60 characters and descriptions over ~160 so your snippet is not truncated in search results
Optionally outputs a matching WebSite or Article JSON-LD block to reinforce your page's meaning for search engines
Quotes, ampersands, and angle brackets in your text are safely escaped so the generated tags never break your markup
Turn any title or text into a clean, SEO-friendly URL slug — with accent transliteration, hyphen or underscore separators, stop-word removal, and batch mode.
Encode and decode HTML entities — named (&), decimal (&), and hex (&) forms, with XSS-safe special-character escaping
Encode and decode URLs, query strings, and form data with encodeURIComponent, encodeURI, or form-urlencoded modes
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