SEO & Webmaster
SERP preview, keyword density, UTM builder, and robots.txt tools for SEO professionals
Responsive 728x90 / 320x100 Ad Slot
(CLS Prevention Active 路 Zero Shift)Available Tools (9)
Google & Naver SERP Snippet Preview
Calculate title pixel width, check meta description limits, and simulate desktop & mobile SERP previews.
Keyword Density & Frequency Analyzer
Analyze word frequencies, 1-3 word n-gram densities, filter stopwords, and detect keyword stuffing risks.
UTM Campaign Link Builder for GA4
Build clean, validated UTM tracking URLs for Google Analytics 4, email campaigns, and paid social ads.
robots.txt Directives & SEO HTML Meta / OpenGraph Generator
Build search engine robots.txt files and HTML <head> meta tags including OpenGraph social cards.
Email mailto 路 SMS 路 WhatsApp Deep Link & HTML Button Generator
Generate pre-filled mailto, SMS, and WhatsApp universal deep links with responsive HTML button code.
JSON-LD Schema Markup Generator
Generate valid Schema.org JSON-LD structured data for Google Rich Results (Articles, FAQs, Products, Local Business).
Open Graph & Twitter Card Preview
Simulate live social share preview cards for X (Twitter), Slack, Discord, Facebook, LinkedIn, and KakaoTalk with HTML meta tags.
Hreflang Tag & Sitemap Generator
Generate reciprocal multi-language hreflang HTML link tags and XML sitemap annotations for International SEO.
XML Sitemap Validator & Splitter
Validate sitemap.xml syntax, extract clean URLs to CSV/text, and split large sitemaps into sub-files with sitemap_index.xml.
Wide Responsive Banner
(CLS Prevention Active 路 Zero Shift)