> For the complete documentation index, see [llms.txt](/llms.txt).
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- webmaster
8 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.
[Start free →](/billing/checkout/?plan=free) [View OpenAPI](/v1/docs) [All categories](/tools/)
Advertising
[
CPC Calculator cpc-calculator
Calculate CPC, CPM, or CTR from two known campaign metrics.
1cr · v2026-04-22
](/tools/cpc-calculator/) [
CPM Calculator cpm-calculator
Calculate campaign cost, CPM, or impressions from two known advertising metrics.
1cr · v2026-04-22
](/tools/cpm-calculator/)
Analytics
[
Value of A Visitor Calculator value-of-a-visitor-calculator
Calculate website visitor value, conversion rate, annualized revenue, and traffic ROI.
2cr · v2026-04-22
](/tools/value-of-a-visitor-calculator/)
CSS
[
CSS Box Shadow Generator css-box-shadow-generator
Generate a CSS box-shadow declaration from numeric shadow controls.
1cr · v2026-04-22
](/tools/css-box-shadow-generator/) [
CSS Compressor css-compressor
Minify CSS and return compression statistics.
1cr · v2026-04-22
](/tools/css-compressor/)
Encoding
[
JSON String Escape/Unescape json-string-escape-unescape
Escape or unescape JSON string content deterministically.
1cr · v2026-04-22
](/tools/json-string-escape-unescape/)
IP
[
IP Address to Binary Converter ip-address-to-binary-converter
Convert IPv4 or IPv6 addresses to padded binary forms.
1cr · v2026-04-22
](/tools/ip-address-to-binary-converter/)
SEO
[
URL Slug Generator url-slug-generator
Generate an SEO-friendly URL slug from a title or phrase.
1cr · v2026-04-22
](/tools/url-slug-generator/)
API OPERATIONAL v1 · OpenAPI 3.1 · MCP 2025-06-18
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