For the complete documentation index, see llms.txt.
19 endpoints

Webmaster API

DNS, HTTP, meta, robots, and other webmaster utilities. Same bearer token, same credit pool, same JSON envelope as every other endpoint — drop them into apps, sites, workflows, or agents without rebuilding formulas, validation, or docs.

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Advertising
CPC Calculatorcpc-calculator
Calculate CPC, CPM, or CTR from two known campaign metrics.
1cr · v2026-04-22
CPM Calculatorcpm-calculator
Calculate campaign cost, CPM, or impressions from two known advertising metrics.
1cr · v2026-04-22
Analytics
Value of A Visitor Calculatorvalue-of-a-visitor-calculator
Calculate website visitor value, conversion rate, annualized revenue, and traffic ROI.
2cr · v2026-04-22
CSS
CSS Box Shadow Generatorcss-box-shadow-generator
Generate a CSS box-shadow declaration from numeric shadow controls.
1cr · v2026-04-22
CSS Compressorcss-compressor
Minify CSS and return compression statistics.
1cr · v2026-04-22
Encoding
JSON String Escape/Unescapejson-string-escape-unescape
Escape or unescape JSON string content deterministically.
1cr · v2026-04-22
HTML
HTML Beautifierhtml-beautifier
Indent and align HTML, or minify it, preserving the contents of pre, script, style and textarea.
1cr · v2026-04-22
HTML Compressorhtml-compressor
Compress HTML by removing comments and extra whitespace.
1cr · v2026-04-22
HTML Entity Encoder Decoderhtml-entity-encoder-decoder
Encode or decode HTML entities for text and markup snippets.
1cr · v2026-04-22
HTML to Markdown Converterhtml-to-markdown-converter
Convert HTML into Markdown, handling headings, emphasis, links, images, lists, blockquotes, code blocks, and tables, with script and style content removed.
1cr · v2026-04-22
HTML to Text Converterhtml-to-text-converter
Strip HTML tags, scripts, styles, and comments to extract plain text, with tag/script/style/comment counts and a size comparison.
1cr · v2026-04-22
IP
IP Address to Binary Converterip-address-to-binary-converter
Convert IPv4 or IPv6 addresses to padded binary forms.
1cr · v2026-04-22
Redirects
.htaccess Redirect Generatorhtaccess-redirect-generator
Generate Apache rules for path redirects, HTTPS, hostname normalization, or IP blocking.
1cr · v2026-04-22
SEO
Hreflang Tag Generatorhreflang-tag-generator
Generate hreflang link tags, HTTP Link headers, and sitemap XML from language and URL pairs.
1cr · v2026-04-22
Keyword Density Checkerkeyword-density-checker
One-, two- and three-word keyword density with stop-word filtering and word counts.
1cr · v2026-04-22
Meta Tag Generatormeta-tag-generator
Build SEO, Open Graph, and Twitter Card meta tags with inherited defaults, length checks, and Google, Facebook, and Twitter preview data.
1cr · v2026-04-22
Robots.txt Generatorrobots-txt-generator
Generate a robots.txt from allow/disallow paths, extra user-agent groups, and sitemaps, or validate an existing file for errors and crawler warnings.
1cr · v2026-04-22
URL Slug Generatorurl-slug-generator
Generate an SEO-friendly URL slug from a title or phrase.
1cr · v2026-04-22
XML Sitemap Generatorxml-sitemap-generator
Generate a validated XML sitemap from paths or URLs with lastmod, change frequency, and priority.
1cr · v2026-04-22