Developer Utilities & Sandboxes
WebAssembly CodeJudge, JWT debuggers, Cron parsers, JSON converters, and syntax diff checkers.
AI System Prompt Studio & Meta-Prompt Optimizer
Engineer, audit, and auto-architect developer-grade system prompts with AI. Supports Claude 3.7 XML, GPT-4o Markdown, DeepSeek CoT, token telemetry, security auditing, and SDK export.
RAG Chunking & Retrieval Studio
Simulate document chunking strategies, visualize sliding overlaps, test vector semantic retrieval ranking, and estimate Vector DB memory and embedding costs.
CodeJudge Core (Online Judge & Sandbox)
Automated code assessment and online judge bench for students and competitive programmers with in-browser Pyodide WebAssembly and JavaScript engines.
JWT Debugger & Security Studio
Decode, verify signatures, audit security vulnerabilities, and craft JSON Web Tokens locally with Web Crypto API. Zero server transmission.
Cron Expression Studio & Visual Builder
Parse, visually compose, explain in plain English, and simulate upcoming execution timestamps for 5-part and 6-part cron schedules across multi-cloud ecosystems.
Text & Code Diff Studio
Compare text and source code side-by-side or unified with intra-line word/character highlights, change navigation, patch generation, and zero server uploads.
JSON to Multi-Language Schema Studio
Convert JSON payloads into strongly-typed models for Python Pydantic V2/V1, Dataclasses, TypedDict, TypeScript, Rust Serde, Go Structs, and SQL DDL.
Universal Base64, URL & Hex Converter Studio
Encode and decode Base64 strings, Image data URIs, URL query components, Hexadecimal memory dumps, Binary bits, and HTML entities with 100% in-browser privacy.
Universal UUID / ULID & Secure API Key Generator
Generate bulk RFC 4122 UUID v4, time-ordered UUID v7, sortable ULIDs, NanoIDs, and API bearer keys powered directly by browser Web Cryptography API.
CSV ↔ JSON & Table Data Studio
Convert bidirectionally between CSV, TSV, JSON, YAML, Markdown Tables, and SQL INSERT queries with auto-delimiter sniffing, dot-notation unflattening, and an interactive virtual data grid.
Meta Tag, Open Graph & Social Card Studio
Audit meta tags, Open Graph og:*, and Twitter cards with pixel-accurate live SERP, Twitter, LinkedIn, and Discord card simulators, character count budgets, and Next.js App Router code export.
HTTP Redirect & Status Chain Visualizer
Trace full HTTP redirect chains (301, 302, 307, 308 to 200 OK) with animated hop diagrams, protocol upgrade detection, per-hop latency telemetry, loop warnings, and SEO crawl budget audits.
HTTP Security Headers & SSL Scanner
Evaluate domain defensive posture from A+ to F across CSP, HSTS, X-Frame-Options, and Permissions-Policy with 1-click ready-to-copy code fixes for Next.js, Nginx, Apache, and Cloudflare Workers.
Universal DNS & MX Record Studio
Concurrent DNS resolution for A, AAAA, MX (priority-sorted), TXT (SPF/DKIM/DMARC linter), CNAME, NS, SOA, and CAA records with RFC 1035 master zone file export.
Reverse DNS & IP Geolocation Studio
Auto-detect client IP, perform reverse PTR lookup, inspect Autonomous System (ASN) routes, organization, geographic coordinates, and real-time round-trip latency telemetry.
Robots.txt & Sitemap Tree Visualizer
Validate and parse robots.txt rules with a live URL crawler path tester, expand recursive XML sitemaps in a virtual tree grid with lastmod freshness scoring, and export sitemap URLs to CSV.
Google Index & Canonical Inspector
Audit search engine crawlability and indexability: check noindex/nofollow directives, self-referencing canonical tag consistency, soft 404 indicators, and Googlebot search accessibility.
Tech Stack & Framework Fingerprinter
Detect web technologies, CMS engines (WordPress, Shopify, Webflow), Web Frameworks (Next.js, React, Vue, Nuxt, Astro), Cloud/CDN providers (Vercel, Cloudflare, AWS), and Analytics platforms from headers, scripts, and DOM signatures.
Keyword Density & Content NLP Analyzer
Calculate 1-gram, 2-gram, and 3-gram keyword density percentages, filter English stop words, evaluate 6 readability algorithms (Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG), and analyze sentence burstiness in browser memory.
Unified Technical, AEO & GEO Audit Studio
Single-click 5-phase SEO, AEO and Generative Engine Optimization audit: inspect dynamic CSR hydration diffs, Core Web Vitals, Schema.org AST graphs, and AI search citation readiness with 1-click code fixes.
Universal Web Crawler & Recursive Site Spider Studio (WebSonar Pro)
Autonomous recursive website crawler, link spider, and structured page dataset compiler (WebSonar, CrawlForge, SiteCartographer). Spiders full domains, extracts H1/H2s, words, and latency, and exports to JSON, CSV, and XML Sitemap.
SchemaMatrix Pro — Research-Grade Web Semantic Extractor & API Studio
Research-grade zero-rule web semantic extractor, ontology classifier, and multi-language data contract synthesis engine. Converts URLs into type-safe JSON, TypeScript interfaces, and Pydantic v2 models with confidence and provenance scores.