HTML & XML Sitemap Index

Comprehensive HTML directory and sitemap indexing all 180+ developer tools, 25 categories, interactive cheat sheets, AI prompts, and tutorials.

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Tool Categories (25)

AEO Tools

Answer Engine Optimization (AEO) tools for analyzing direct answers, FAQs, question intent, and snippet extraction readiness.

GEO Tools

Generative Engine Optimization (GEO) tools for auditing content structure, entity mentions, citations, and AI search visibility.

AI Prompt Tools

Engineered prompt generators for ChatGPT, Claude, Gemini, Midjourney, SEO, AEO, GEO, and System Prompts.

JSON & Data Tools

Format, validate, minify, view, convert, diff, inspect schemas, and query JSON data online.

Security & Web Utilities

Analyze HTTP headers, generate CSP, SRI hashes, security headers, CORS, cookies, and MIME lookups.

URL & Web Development

Parse URLs, build query parameters, extract domains, clean URL lists, and resolve relative links.

API Development Tools

Build REST requests, generate cURL commands, fetch and Axios snippets, mock responses, and test cases.

Database Tools

Generate SQL queries, INSERT/UPDATE/DELETE builders, DDL schemas, mock data, and query explainers.

Git & Developer Workflow

Generate Git commands, conventional commits, branch names, PR templates, SemVer tools, and release notes.

Markdown & Documentation

Table generators, TOC builders, frontmatter tools, README generators, badges, and documentation previews.

CSS & Frontend Tools

Border radius, transforms, animations, filters, flexbox, grid, glassmorphism, clamp, and text shadow tools.

HTML Tools

HTML tables, forms, inputs, semantic media tags, email templates, accessibility checkers, and tag analyzers.

Frontend & Responsive Development

Breakpoint calculators, viewport units, specificity calculators, PWA manifest generator, and CSS grid tools.

Testing & QA

Test case generators, synthetic data creators, fake user profiles, boundary value calculators, and QA checklists.

AI Developer Tools

System prompt builders, token estimators, prompt cost calculators, few-shot builders, and structured outputs.

Data & Visualization Tools

CSV column analyzers, row filters, data cleaners, pivot generators, TSV converters, and Markdown table bridges.

Encoding & Decoding

Encode and decode Base64, URL, HTML entities, Hex, Unicode, and JWT tokens.

Generators

Generate UUIDs, secure passwords, random strings, QR codes, hashes, and mock data.

Code Tools

Format, beautify, and clean up HTML, CSS, JavaScript, SQL, and Markdown code.

Web Tools

Meta tag builders, Open Graph previewers, robots.txt, and sitemap generators.

Text Tools

Case converter, line deduplication, word counter, string sorting, slug generator, and text diff.

Calculator Tools

Percentage, average, ratio, proportion, discount, profit margin, markup, VAT, GST, age, and date calculators.

Conversion Tools

Length, weight, temperature, speed, area, volume, data storage, time zone, and binary converters.

Regex Tools

Test, debug, validate, and build regular expressions with match explanations.

Image Tools

Compress, resize, convert images, image to Base64, Base64 to image, and favicon generator.

Developer Tools (184)

AEO FAQ Analyzer

AEO Tools

FAQ Coverage Score

AEO Tools

AEO Content Score

AEO Tools

GEO Content Score

GEO Tools

AI Prompt Generator

AI Prompt Tools

AI Prompt Improver

AI Prompt Tools

SEO Prompt Generator

AI Prompt Tools

Blog Post Prompt Generator

AI Prompt Tools

AI Image Prompt Generator

AI Prompt Tools

AEO Prompt Generator

AI Prompt Tools

SEO & AEO Prompt Generator

AI Prompt Tools

GEO Prompt Generator

AI Prompt Tools

YouTube Prompt Generator

AI Prompt Tools

System Prompt Generator

AI Prompt Tools

JSON Formatter

JSON Tools

JSON Validator

JSON Tools

JSON Minifier

JSON Tools

JSON Viewer

JSON Tools

JSON Diff Checker

JSON Tools

Base64 Encoder

Encoding & Decoding

Base64 Decoder

Encoding & Decoding

Base64 Encoder & Decoder

Encoding & Decoding

JWT Decoder

Encoding & Decoding

URL Encoder

Encoding & Decoding

URL Decoder

Encoding & Decoding

HTML Entity Encoder

Encoding & Decoding

HTML Entity Decoder

Encoding & Decoding

Hex String Converter

Encoding & Decoding

Password Generator

Generators

QR Code Generator

Generators

Meta Tag Generator

Web Tools

Text Case Converter

Text Tools

URL Slug Generator

Text Tools

Text Diff Checker

Text Tools

Unix Timestamp Converter

Conversion Tools

Number Base Converter

Conversion Tools

Base64 Image Encoder

Image Tools

Percentage Calculator

Calculator Tools

Average Calculator

Calculator Tools

Ratio Calculator

Calculator Tools

Proportion Calculator

Calculator Tools

Discount Calculator

Calculator Tools

Profit Margin Calculator

Calculator Tools

Markup Calculator

Calculator Tools

VAT Calculator

Calculator Tools

GST Calculator

Calculator Tools

Age Calculator

Calculator Tools

Date Difference Calculator

Calculator Tools

Time Duration Calculator

Calculator Tools

Unit Converter

Conversion Tools

Length Converter

Conversion Tools

Weight Converter

Conversion Tools

Temperature Converter

Conversion Tools

Speed Converter

Conversion Tools

Area Converter

Conversion Tools

Volume Converter

Conversion Tools

Data Storage Converter

Conversion Tools

Time Zone Converter

Conversion Tools

Binary Converter

Conversion Tools

HTTP Header Analyzer

Security & Web Utilities

CSP Header Generator

Security & Web Utilities

SRI Hash Generator

Security & Web Utilities

Basic Auth Header Generator

Security & Web Utilities

Bearer Token Generator

Security & Web Utilities

CORS Header Generator

Security & Web Utilities

Set-Cookie Header Builder

Security & Web Utilities

Cache-Control Header Generator

Security & Web Utilities

MIME Type Lookup

Security & Web Utilities

HTTP Status Code Reference

Security & Web Utilities

Port Number Reference

Security & Web Utilities

URL Parser & Inspector

URL & Web Development

Domain & Hostname Extractor

URL & Web Development

URL Query Parameter Builder

URL & Web Development

URL Cleaner & Normalizer

URL & Web Development

URL List Cleaner & Deduplicator

URL & Web Development

cURL Command Parser

API Development Tools

cURL to Fetch Converter

API Development Tools

cURL to Axios Converter

API Development Tools

API Mock Response Generator

API Development Tools

API Error Response Generator

API Development Tools

SQL Index Generator

Database Tools

Markdown Table Generator

Markdown & Documentation

Markdown Table to JSON Converter

Markdown & Documentation

Markdown & Shields Badge Builder

Markdown & Documentation

Open Source License Generator

Markdown & Documentation

Pixel to REM / EM Calculator

Frontend & Responsive Development

Device Screen Resolution Reference

Frontend & Responsive Development

Viewport & Breakpoint Dimension Helper

Frontend & Responsive Development

Bulk UUID v4 Generator

Testing & QA

Vector Embedding Chunk Splitter

AI Developer Tools

Mermaid Flowchart Generator

Data & Visualization Tools

Mermaid Sequence Diagram Builder

Data & Visualization Tools

Mermaid ER Diagram Builder

Data & Visualization Tools

Mermaid Gantt Chart Generator

Data & Visualization Tools

Free Flowchart Maker

Data & Visualization Tools

Flowchart Creator

Data & Visualization Tools

Venn Diagram Generator

Data & Visualization Tools

Block Diagram Maker

Data & Visualization Tools

ERD Diagram Maker

Data & Visualization Tools

SQL to ERD Converter

Data & Visualization Tools

Mind Map Maker

Data & Visualization Tools

UML Diagram Maker

Data & Visualization Tools

Network Diagram Maker

Data & Visualization Tools

Mermaid Diagram Generator

Data & Visualization Tools

Text to Flowchart Converter

Data & Visualization Tools

GeoJSON Feature & Geometry Builder

Data & Visualization Tools

Geographic Bounding Box Calculator

Data & Visualization Tools

Git Commit Message Builder

Git & Developer Workflow

Conventional Commits Generator

Git & Developer Workflow

Git Alias Generator

Git & Developer Workflow

Git Branch Name Generator

Git & Developer Workflow

Crontab & Schedule Expression Generator

Git & Developer Workflow

Semantic Versioning (SemVer) Calculator

Git & Developer Workflow

CSS Glassmorphism Generator

CSS & Frontend Tools

CSS Aspect Ratio Calculator

CSS & Frontend Tools

CSS Specificity Calculator

CSS & Frontend Tools

JSONPath Evaluator & Finder

JSON & Data Tools

JSON to JSON Schema Generator

JSON & Data Tools

JSON Key Sorter

JSON & Data Tools

JSON String Escape / Unescape

JSON & Data Tools

Developer Cheat Sheets (5)

JavaScript Cheat Sheet

Quick reference for ES6+ array methods, async/await, DOM manipulation, promises, and object destruction.

Git Commands Cheat Sheet

Essential commands for repository setup, staging, commits, branches, stashing, and remote syncing.

HTTP Status Codes Cheat Sheet

Complete breakdown of HTTP status response codes (2xx, 3xx, 4xx, 5xx).

SQL Query Cheat Sheet

Quick reference for SELECT, JOINs, GROUP BY, indexes, and aggregation functions.

Markdown Syntax Cheat Sheet

Syntax for headers, emphasis, lists, code blocks, tables, and blockquotes.

Developer Guides & Blog (165)

How to Use AI for SEO

AI & Automation

What Is the Best SEO Tool?

AI & Automation