Analyzers

Check WCAG 2 contrast ratios between foreground and background hex colors.

Subscribe to a WebSocket feed, parse JSON frames on the fly, filter events, and inspect structured payloads in real time.

Scan text for emails, phone numbers, SSNs, credit cards, and other personally identifiable information — locally in your browser.

Count words, characters, sentences, paragraphs, and estimated reading time — privately in your browser.

Increase or reduce image contrast with Fabric.js filters.

Enter a site URL to auto-detect the sitemap, or paste XML to audit URLs, duplicates, protocols, trailing slashes, lastmod, and nested child sitemaps — privately in your browser.

Paste a draft and see how often words and phrases appear — live keyword density, ranked n-grams, and stuffing guidance, all in your browser.

Preview estimated search snippets across major search engines and validate your SEO metadata.