All tools · page 268
6,901 free tools across 25 categories. Tools marked with a lightning bolt are ready to use right now.
Set a base origin to get base tag HTML with rel-link and hash-navigation caveats.
Paste tags to get ul tag list HTML with per-tag link hrefs and optional counts.
Set column counts to get nested-table email layout HTML with role presentation attributes.
Pick a brand font to get email-safe font-family stacks with measured fallback behavior.
Set preview text to get hidden preheader HTML that controls inbox snippet wording.
Set links to get email footer table HTML with unsubscribe, address, and preference centers.
Set gap sizes to get spacer-cell table HTML that keeps email paddings consistent everywhere.
Set product pairs to get two-up product row table HTML with images and price lines.
Set an image and overlay to get VML-backed background image HTML that works in Outlook.
Paste email HTML to get a clean plain-text alternative with unwrapped links and lists.
Set URLs to get List-Unsubscribe and List-Unsubscribe-Post header snippets for one-click opt-out.
Set app actions to get manifest shortcuts array JSON with icons and url patterns.
Paste locale and URL pairs to get hreflang link HTML with x-default and reciprocity checks.
Set dates and author to get article meta tags for published, modified, and section fields.
Set responsive rules to get viewport meta HTML with accessibility-safe scaling guidance.
Set display flags to get apple-mobile-web-app meta HTML for standalone home-screen apps.
Pick detected types to get format-detection meta HTML that stops iOS auto-linking numbers.
Paste verification tokens to get meta tags for Search Console, Bing, Pinterest, and Yandex.
Paste URLs with change frequencies to get a valid sitemap.xml with lastmod and priority tags.
Set allow and disallow paths to get robots.txt text with sitemap and crawl-delay lines.
Paste a title list to get duplicates and near-duplicates flagged with merge suggestions.
Paste page HTML to get missing or malformed meta tags listed with ready-to-paste fixes.
Pick a schema type to get required and recommended properties for Google rich results.
Paste titles to get slugified URL paths with stop-word removal and length warnings.