DnilX Web Tools Suite
Free, high-performance browser-based tools for developers, designers, and everyday productivity. Processed 100% client-side.
Meta Tag Generator
Meta & Social
Craft SEO-optimized titles, descriptions, and OpenGraph/Twitter social cards.
Robots.txt Generator
Crawling & Indexing
Generate crawl directives for Googlebot, Bingbot, Baidu, and GPTBot.
XML Sitemap Generator
Crawling & Indexing
Build structured XML sitemaps with priority, changefreq, and lastmod tags.
Keyword Density Checker
Content & Keywords
Analyze one-word, two-word, and three-word phrase frequencies and density.
Canonical URL Builder
Meta & Social
Prevent duplicate content penalties by standardizing primary page URLs.
OpenGraph Image Previewer
Meta & Social
Live preview how your web links render across Discord, Facebook, and LinkedIn.
Twitter Card Generator
Meta & Social
Generate Summary and Large Image summary Twitter card meta tags.
Schema JSON-LD Creator
Meta & Social
Create Article, Organization, Product, FAQ, and Breadcrumb Schema markup.
SERP Google Snippet Preview
Meta & Social
Simulate Google desktop and mobile search engine results page snippets.
URL Slug Formatter
URL & Links
Convert article titles into clean, SEO-friendly permalinks with custom separators.
UTM Campaign URL Builder
URL & Links
Tag URLs with utm_source, utm_medium, and utm_campaign for Google Analytics.
HTTP Status Code Lookup
Audit & Performance
Reference 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response codes and crawl meanings.
Hreflang Tag Generator
Meta & Social
Generate multi-language and multi-regional hreflang alternate links.
Redirect .htaccess Generator
URL & Links
Create 301 and 302 Apache .htaccess rewrite rules and HTTPS redirects.
Nginx Redirect Rule Maker
URL & Links
Generate Nginx server block rewrite and return 301 redirect configs.
Heading Hierarchy Validator
Content & Keywords
Check DOM heading hierarchy (H1, H2, H3) for accessibility and SEO.
Image Alt Tag Checker
Audit & Performance
Ensure every graphic has descriptive, keyword-rich alternative text.
Readability Score Calculator
Content & Keywords
Evaluate Flesch Reading Ease and Flesch-Kincaid grade levels for content.
Keyword Permutation Studio
Content & Keywords
Combine prefixes, keywords, and suffixes to discover long-tail search terms.
Robots Meta Tag Tester
Crawling & Indexing
Validate noindex, nofollow, noarchive, nosnippet, and max-image-preview tags.
Disavow Links Formatter
Crawling & Indexing
Format domain-level and URL-level disavow text files for Google Search Console.
Anchor Text Analyzer
URL & Links
Classify internal and external backlink anchor text distribution.
Website Favicon Meta Builder
Meta & Social
Generate HTML links for Apple Touch Icons, favicon.ico, and Web Manifest.
JSON Feed & RSS Generator
Crawling & Indexing
Generate RSS 2.0 and JSON Feed markup for blog syndication.
Mobile Viewport Meta Maker
Meta & Social
Generate responsive viewport meta tags for modern mobile web apps.
FAQ Schema Markup Maker
Meta & Social
Build structured FAQPage schema to trigger expandable accordion SERP results.
Product Schema Generator
Meta & Social
Generate Product schema with price, currency, availability, and review ratings.
Local Business Schema
Meta & Social
Create LocalBusiness schema with address, geo coordinates, and opening hours.
Recipe Schema Builder
Meta & Social
Generate Recipe JSON-LD with ingredients, prep time, calories, and instructions.
Website Speed Budget Calc
Audit & Performance
Calculate target byte budgets for HTML, CSS, JS, fonts, and images.
Link Counter & Extractor
URL & Links
Count total, internal, external, and nofollow links in HTML snippets.
HTML Minifier for SEO
Audit & Performance
Strip whitespace and comments to reduce Time-To-First-Byte (TTFB).
Word Count & Keyword Target
Content & Keywords
Track word count against competitive SERP top-10 length benchmarks.
Meta Description Length Checker
Meta & Social
Validate meta description character length and pixel width limits.
SEO Title Pixel Width Calc
Meta & Social
Check if title fits within Google’s 600px desktop truncation threshold.