Webmaster, SEO &amp; Text Tools

✓ Real-time visual previews for Google SERP search results, Twitter/X Cards, and Facebook / LinkedIn link previews

SEO Meta Tag & OpenGraph SERP Generator

Generate SEO meta tags with live visual previews for Google, Twitter, and Facebook.

✓ Character count and pixel-width warning indicators for Titles (60 chars) and Descriptions (155 chars)

✓ Split-screen dual-pane editor with synchronized scrolling and instantaneous preview rendering

Markdown Live Editor & HTML Converter

Real-time split-screen Markdown editor with live preview and HTML export.

✓ Full GitHub Flavored Markdown (GFM) support: tables, task lists, strikethrough, and code blocks

✓ Cryptographically secure pseudo-random number generator (CSPRNG) via `crypto.getRandomValues`

Secure Password & UUID v4 Generator

Generate cryptographically secure random passwords with entropy ratings, alongside bulk UUID v4 generation.

✓ Customizable password complexity: length (8-128 chars), uppercase, lowercase, numbers, and symbols

✓ Universal case conversion: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and URL slugs

Text Inspector, Case Converter & Visual Diff Checker

Convert text cases (camelCase, snake_case, UPPERCASE), analyze word counts and reading time, and compare text diffs.

✓ In-depth text metrics: word count, character count (with/without spaces), sentence count, and reading time

✓ Complete asset bundle: favicon.ico (16x16, 32x32, 48x48), Apple Touch Icon (180x180), and Android PWA icons (192x192, 512x512)

Favicon & App Icon Suite Generator (with ZIP download)

Generate a full multi-platform favicon suite, web manifest, and HTML tags with ZIP export.

✓ Automatic site.webmanifest JSON file generation configured for Progressive Web Apps (PWA)

✓ Multi-payload support: Generate QR codes for URLs, Wi-Fi auto-connect (WPA/WEP), vCard 3.0 contacts, SMS, Email, and plain text

Custom QR Code Studio & Logo Embedder

Create custom styled QR codes with logo embedding, colors, error correction, and SVG/PNG export.

✓ Center logo & icon embedding with automatic center clearing and circular/square masking

✓ Pre-configured bot profiles for Googlebot, Bingbot, Baiduspider, YandexBot, DuckDuckBot, and Yahoo Slurp

Robots.txt & AI Crawler Rules Generator

Create optimized robots.txt files with directives for search engines and modern AI web crawlers.

✓ Dedicated AI Scraper & LLM Crawler Controls: configure or block GPTBot (OpenAI), ClaudeBot (Anthropic), CCBot (Common Crawl), and Bytespider

✓ Canonical URL redirects: Force HTTPS (SSL), enforce or strip www. subdomains, and eliminate trailing slashes

Apache .htaccess & Nginx Redirect / Security Rules Generator

Generate Apache .htaccess and Nginx rules for redirects, HTTPS enforcement, and security headers.

✓ Automated 301 permanent and 302 temporary rewrite rule builder with RegEx pattern matching

✓ Intelligent HTML minification: removes redundant whitespace, newlines, and collapses consecutive spaces

HTML, Inline CSS & JavaScript Minifier

Minify raw HTML markup, inline CSS styles, and inline scripts for faster page load times.

✓ Deep inline minification: compresses inline <style> tags and <script> blocks within HTML documents

✓ Visual schema generator supporting 8 essential Google rich result types: FAQPage, Article, Product, LocalBusiness, HowTo, Recipe, SoftwareApplication, and BreadcrumbList

Schema.org JSON-LD Rich Snippet & Structured Data Generator

Visual Schema.org JSON-LD structured data generator for Google rich snippets and search results.

✓ Live Google SERP Rich Snippet simulator rendering star ratings, price badges, FAQ accordions, and breadcrumbs in real-time

✓ Visual table manager and bulk URL text importer for generating RFC 0.9 compliant sitemap.xml files in seconds

Visual XML Sitemap Generator, Validator & Downloader

Generate valid XML sitemap files with bulk import, priority mapping, and image tags.

✓ Fine-grained crawling directives: <lastmod> date picker, <changefreq> frequency selectors, and <priority> weight dials (0.0 to 1.0)

✓ Comprehensive multi-gram frequency breakdown: 1-Word (unigrams), 2-Word (bigrams), and 3-Word (trigrams) keyword density analysis

SEO Keyword Density, N-Gram Frequency & Readability Analyzer

Analyze keyword density, N-gram phrase frequencies, and content readability scores.

✓ Algorithmic Keyword Stuffing Guard: Visual status indicators warning when phrase frequency exceeds the safe 3.5% threshold

✓ Generate Google and Bing compliant hreflang link tags supporting ISO 639-1 language codes and ISO 3166-1 regional alpha-2 codes

Hreflang Multi-Language & Regional SEO Tags Generator

Generate multi-language and regional hreflang tags for international SEO.

✓ Dual-format generator: Exports both HTML <head> <link rel="alternate"> tags and XML Sitemap <xhtml:link> extension syntax

✓ RFC 3986 compliant URL building with automatic lowercasing, space-to-hyphen slugification, and special character sanitization

Universal UTM Campaign Link & QR Code Studio

Generate clean, standardized Google Analytics UTM campaign tracking URLs with channel presets, auto-slugify, and instant QR codes.

✓ Comprehensive GA4 parameter support: utm_source, utm_medium, utm_campaign, utm_term, utm_content, utm_id, and custom parameters

✓ Real-time Google Responsive Search Ads (RSA) simulator with strict 30-character headline and 90-character description counters

Google & Meta Ads Copy Editor & Live Card Preview

Real-time Google Responsive Search Ads and Meta Facebook/Instagram sponsored feed ad copy editor with character limits and live card preview.

✓ Meta Ads feed mockup editor supporting Primary Text (125 chars), Headline (27-40 chars), Link Description, and Call-to-Action buttons

✓ Multi-algorithm linguistic scoring: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau, and Automated Readability Index (ARI)

Readability Score & Flesch-Kincaid Text Quality Inspector

Calculate Flesch Reading Ease, Grade Level, and sentence complexity with live passive voice highlighting and reading time estimators.

✓ Real-time sentence complexity heatmap highlighting very hard-to-read sentences (>25 words) and dense polysyllabic phrasing

✓ Two-Tailed Z-Test and P-value calculation engine for binomial conversion distributions with 90%, 95%, and 99% confidence intervals

A/B Test Statistical Significance & Conversion Lift Calculator

Calculate two-tailed Z-score, P-value, conversion uplift %, and sample size requirements for CRO experimentation with 95% / 99% confidence.

✓ Precise Conversion Lift (%) and absolute difference metrics comparing Baseline Control against Experimental Variants

✓ Comprehensive 0-100 Headline Quality Index evaluating word balance across Common (20-30%), Uncommon (10-20%), Emotional (10-15%), and Power words (1+)

Conversion Headline, Power Words & CTR Potential Scorer

Score headlines from 0 to 100 based on power words, emotional triggers, character limits, and estimated click-through rate (CTR) potential.

✓ Curiosity Gap and Psychological Hook Inspector detecting urgency, exclusivity, questions, listicle numerals, and high-CTR phrasing

✓ Client-Side DOCX Binary Parsing: Parses Microsoft Word OpenXML (.docx) files locally using Mammoth.js

Word DOCX to Markdown & HTML Document Converter

Convert Microsoft Word .DOCX files to Markdown and HTML with table parsing and live preview.

✓ GitHub-Flavored Markdown: Converts headings (H1-H6), bulleted lists, numbered lists, bold, italics, blockquotes, and tables

✓ Comprehensive CSP Directive Selector: Granular control over default-src, script-src, style-src, img-src, connect-src, font-src, frame-ancestors, object-src, and base-uri

Security

Content Security Policy (CSP) & CORS Header Studio

Build and audit Content Security Policy (CSP) and CORS HTTP headers for Apache, Nginx, and Cloudflare.

✓ Interactive CORS Configurator: Configure Access-Control-Allow-Origin, Allow-Methods, Allow-Headers, Expose-Headers, Allow-Credentials, and Max-Age preflight cache

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WebCraftKit Platform 100% Client-Side Engine

Air-Gapped Privacy & Zero-Latency Developer Utilities

Every cryptographic algorithm, schema transformer, color space converter, and binary extractor runs entirely in your browser RAM. Your tokens, API secrets, and source code are never sent to external servers.

Zero Server Telemetry

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Sub-Millisecond Execution

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80 Production Tools

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Dev & Data

Developer & Data Utilities

Format, validate, encode, decode, and transform developer data formats with zero server latency.

CSS & Design

CSS & UI Design Tools

Generate high-performance CSS styles, smooth box shadows, modern glassmorphism, and accessible palettes.

AI & LLM

AI & LLM Engineering

Professional browser-native utilities for prompt engineering, token counting, structured outputs, and RAG vector chunking.

Mobile & Apps

Mobile & App Development

Generate Xcode/Android icon suites, design App Store screenshot mockups, convert strings.xml, calculate DPI, and test deep links.