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Everything on ToolZip in one place — the Claude Code catalog, 45 browser tools, 44 guides, and 43+ conversion pages.
Claude Code Catalog
Curated, one-line-install agents, commands, MCP servers, skills, settings, and hooks. Browse by component type.
Claude Code Agents
Specialized AI subagents with their own prompt, tools, and context.
--agentClaude Code Commands
Reusable slash commands that automate repeatable prompts.
--commandClaude Code MCP Servers
Model Context Protocol servers that connect Claude Code to external tools.
--mcpClaude Code Skills
Packaged, model-invoked instruction bundles that add reusable capabilities.
--skillClaude Code Settings
Drop-in settings.json configurations for permissions, environment, and more.
--settingClaude Code Hooks
Shell commands that fire on Claude Code lifecycle events for automation.
--hookText Tools
13 toolsWord & Character Counter
Count words, characters, sentences & paragraphs with readability score
Case Converter
Convert text between camelCase, snake_case, kebab-case & 10+ formats
Lorem Ipsum Generator
Generate placeholder text — paragraphs, sentences, or words
Text Diff Checker
Compare two texts & highlight differences side by side
String Encoder / Decoder
URL encode, HTML entity encode/decode & more in a pipeline
Markdown to HTML Converter
Convert Markdown to HTML with live preview — GFM supported
Markdown Viewer
View MD files online — read mode, TOC, PDF & HTML export
Text Repeater & Manipulator
Repeat, reverse, sort, deduplicate & manipulate text
HTML Entity Encoder / Decoder
Encode & decode HTML entities — named, numeric & hex formats
HTML to Markdown Converter
Convert HTML to Markdown — headings, tables, code blocks & more
URL Slug Generator
Generate clean URL slugs from titles — bulk mode & custom separators
Character Frequency Analyzer
Visualize character frequency — counts, percentages & Unicode codes
Line Sorter & Deduplicator
Sort, deduplicate, shuffle & filter lines with prefix/suffix options
Developer Tools
24 toolsJSON Formatter & Validator
Format, validate & explore JSON with tree view & error highlighting
Regex Tester
Test regex patterns with live highlighting & plain-English explanations
UUID / ULID Generator
Generate UUID v4, v7 & ULID — bulk up to 1,000
Base64 Encoder / Decoder
Encode & decode Base64 — text, files & image preview
JWT Decoder
Decode JWTs — view header, payload & expiry status
Cron Expression Generator
Build cron expressions visually — see next 10 run times
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 & HMAC hashes
Password Generator
Generate secure passwords with custom length & character sets
QR Code Generator
Generate QR codes for URLs, text, Wi-Fi & more — download as PNG/SVG
JSON to CSV Converter
Convert JSON arrays to CSV with auto column detection & download
JSON to YAML Converter
Convert JSON to YAML and back — preserves types & nesting
SQL Formatter
Format & beautify SQL queries with proper indentation & keyword styling
Chmod Calculator
Calculate Unix file permissions — numeric & symbolic chmod notation
JSON to XML Converter
Convert JSON to XML and back — nested objects & arrays supported
CSV to JSON Converter
Convert CSV to JSON arrays with auto delimiter detection
JavaScript Formatter
Format, beautify & minify JavaScript with syntax highlighting
YAML Validator
Validate YAML syntax, find errors & convert to JSON
XML Formatter & Validator
Format, beautify & validate XML with error detection
IP Address Analyzer
Analyze IPv4 addresses with subnet calculator & binary/hex conversion
HTML Minifier
Minify HTML — remove comments, whitespace & optional tags
URL Parser & Decoder
Parse URLs into components — protocol, host, path, query params & hash
Backslash Escape / Unescape
Escape & unescape backslash sequences — \n, \t, \", \uXXXX
JSON Path Finder
Explore JSON interactively — click nodes to find & copy paths
Placeholder Image Generator
Generate placeholder images — custom size, color, text & download as PNG/SVG
Converters
8 toolsColor Converter
Convert HEX, RGB, HSL, CMYK with contrast checker & palette generator
Number Base Converter
Convert binary, octal, decimal & hex with step-by-step math
Unix Timestamp Converter
Convert Unix timestamps to dates & vice versa with timezone support
Unit Converter
Convert length, weight, temperature & 12+ unit categories
CSS Unit Converter
Convert px to rem, em, vh, vw with visual size preview
Image Format Converter
Convert PNG, JPG, WebP & AVIF — 100% client-side, no upload
CSS Gradient Generator
Create linear, radial & conic CSS gradients with live preview
Text to Binary Converter
Convert text to/from binary, hex, octal & decimal
Developer Guides
44 articlesHow to Validate JSON: A Complete Guide
Validate JSON data, fix common syntax errors, and learn why validation matters for APIs and configs. Practical examples and free tools.
8 min read · JSON & DataRegex for Email Validation: The Right Way
The correct regex pattern for email validation, why simple patterns fail, and implementation in JavaScript, Python, and PHP.
9 min read · Regular ExpressionsChmod Permissions Explained: Linux Guide
Master Unix file permissions. Learn what 755, 644, and 777 mean, symbolic notation, and security best practices with an interactive calculator.
10 min read · Unix & LinuxBase64 Encoding Explained: How It Works
What Base64 encoding is, how the algorithm works, and when to use it. Covers data URIs, JWT tokens, and API authentication with code examples.
10 min read · Encoding & SecurityHow to Convert Markdown to PDF: The Complete Guide (2026)
Five proven ways to convert Markdown files to PDF — browser-based, Pandoc CLI, VS Code, programmatic, and online converters. Compare quality, learn fixes for common issues (page breaks, code blocks, images), and pick the right method for READMEs, docs, and reports.
13 min read · Text ProcessingMD5 vs SHA-256: Which Hash to Use?
Compare MD5 and SHA-256 side by side. Differences in security, speed, output size, and when to use each for checksums and passwords.
11 min read · Encoding & SecurityJSON vs YAML: When to Use Each Format
Compare JSON and YAML side by side. Key differences in syntax, features, and when each is better for configuration, APIs, and data exchange.
9 min read · JSON & DataUUID v4 vs v7 vs ULID: Which to Use?
Compare UUID v4, v7, ULID, and NanoID. Differences in randomness, sortability, size, and performance for databases and APIs.
10 min read · Developer ToolsCron Expression Syntax: Complete Guide
Master cron syntax with this guide. The 5-field format, special characters, common schedules, and examples for Linux, AWS, and Kubernetes.
12 min read · Unix & LinuxPX vs REM vs EM: CSS Unit Guide
Differences between px, rem, and em in CSS. When to use each for fonts, spacing, and responsive layouts with accessibility best practices.
8 min read · CSS & Web DevWebP vs AVIF vs PNG: Format Comparison
Compare WebP, AVIF, and PNG image formats. Compression ratios, quality, browser support, and when to use each for web performance.
9 min read · Web PerformanceRegex Cheat Sheet: 20 Essential Patterns
20 most useful regex patterns for email, URL, phone, date, IP, and password validation. Copy-paste ready with explanations.
11 min read · Regular ExpressionsWhat is JWT? Developer's Guide
How JSON Web Tokens work: three-part structure, common claims, security best practices, and when to use JWTs vs sessions.
10 min read · Encoding & SecurityURL Encoding Explained: When You Need It
What URL encoding is, which characters need it, %20 vs +, and how to encode in JavaScript, Python, and PHP. Practical examples.
8 min read · Encoding & SecurityHEX vs RGB vs HSL: Color Format Guide
Differences between HEX, RGB, and HSL. When to use each, conversion tips, and practical CSS color management advice.
9 min read · CSS & Web DevWCAG Color Contrast: Quick Guide
WCAG contrast ratio requirements for AA and AAA. How to check, fix, and design accessible color combinations for text and UI.
8 min read · CSS & Web DevUnix Timestamps Explained
What Unix timestamps are, why developers use epoch time, seconds vs milliseconds, timezone pitfalls, and the Year 2038 problem.
9 min read · Developer ToolsMarkdown Cheat Sheet: Syntax Reference
Complete Markdown syntax reference: headings, bold, italic, links, images, code blocks, tables, task lists, and GFM extensions.
10 min read · Text ProcessingcamelCase vs snake_case vs kebab-case Guide
When to use camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE. Conventions for JS, Python, CSS, SQL, and APIs.
8 min read · Text ProcessingHow to Create a Strong Password
What makes a password strong, how entropy works, why length beats complexity, and modern NIST best practices with examples.
9 min read · Encoding & SecurityHow to Generate QR Codes: Complete Guide
Create QR codes for URLs, Wi-Fi, email, phone, and text. Static vs dynamic, sizing, design tips, and scanning troubleshooting.
8 min read · Developer ToolsImage Optimization for the Web
Reduce image sizes by 60-80% without quality loss. Format selection, responsive images, lazy loading, and Core Web Vitals tips.
11 min read · Web PerformanceRegex for Phone Number Validation
Regex patterns for US, UK, international, and E.164 phone numbers. Formatting variations, country codes, and regex vs libraries.
9 min read · Regular ExpressionsCSS Gradients: Linear, Radial & Conic Guide
Master CSS gradients with examples. Linear, radial, conic syntax, color stops, repeating gradients, and creative design patterns.
10 min read · CSS & Web DevCommon JSON Errors and How to Fix Them
Fix the 10 most common JSON syntax errors: trailing commas, single quotes, unquoted keys, and unexpected tokens with examples.
8 min read · JSON & DataHow to Compare Two Text Files: 5 Methods
Compare texts to spot every difference. Online diff tools, command-line diff, VS Code, Git diff, and programmatic comparison.
8 min read · Text ProcessingVerify File Integrity with Hash Checksums
Use MD5, SHA-256, SHA-512 to verify downloads. Step-by-step instructions for Windows, Mac, and Linux with examples.
8 min read · Encoding & SecuritySQL Formatting Best Practices
SQL formatting standards for readable queries. Indentation, keyword casing, JOIN layout, subqueries, CTEs, and team style guides.
8 min read · Developer ToolsLorem Ipsum Guide for Designers
What Lorem Ipsum is, why designers use it, when NOT to, 8 creative alternatives, and how much text you need for any design.
7 min read · Text Processing28 Best Free Online Developer Tools
Curated list of free online developer tools: JSON formatters, regex testers, encoders, converters. Browser-based, private, no signup.
12 min read · Developer ToolsWhat Is Claude Code? The Complete Guide (2026)
Claude Code is Anthropic's agentic CLI for coding in your terminal. Learn how it works, how to install it, and its core building blocks in this 2026 guide.
8 min read · Claude CodeClaude Code Agents: How to Install and Use Subagents
Learn what Claude Code subagents are, how the .claude/agents folder and frontmatter work, and how to install ready-made agents from ToolZip in one command.
8 min read · Claude CodeClaude Code MCP Servers: The Complete Setup Guide
Learn how MCP servers extend Claude Code with databases, browsers, and docs. Configure .mcp.json, pick a transport, and install servers in one command.
9 min read · Claude CodeClaude Code Slash Commands: Build Custom Commands
Learn how Claude Code slash commands work: the .claude/commands markdown format, arguments, when to use commands vs subagents, and how to install them fast.
8 min read · Claude CodeClaude Code Hooks: Automate Your Dev Workflow
Learn how Claude Code hooks run shell commands on lifecycle events to lint on save, block dangerous commands, and fire desktop notifications on their own.
9 min read · Claude CodeBest Claude Code Agents for Developers (2026)
The best Claude Code agents for developers in 2026: code reviewer, debugger, security auditor, database expert and more, each with a one-line install command.
8 min read · Claude CodeClaude Code Skills vs Agents vs Commands: The Complete Comparison
Skills vs agents vs slash commands in Claude Code, compared plainly: what each is, how it's triggered, when to use it, and how to install each one.
9 min read · Claude CodeClaude Code Slash Commands: The Complete Cheat Sheet (2026)
A practical cheat sheet for Claude Code slash commands: every built-in command in one table, plus how to build and install your own custom /commands.
7 min read · Claude CodeClaude Code vs Cursor: An Honest 2026 Comparison
A balanced look at Claude Code and Cursor in 2026: terminal agent vs AI IDE, autonomy, extensibility, when to pick each, and how to run both together.
8 min read · Claude CodeClaude Code Settings: settings.json, Permissions, and CLAUDE.md
Configure Claude Code with settings.json and CLAUDE.md: the three settings files and their precedence, the permissions allow and deny model, and project memory.
8 min read · Claude CodeCLAUDE.md: The Complete Guide to Claude Code Memory (2026)
CLAUDE.md is the memory file Claude Code reads at the start of every session. Learn where it lives, what to put in it, and how to write one that actually improves results.
9 min read · Claude CodeClaude Code Skills: How to Create and Use Agent Skills
Skills package reusable instructions and files that Claude Code loads on demand. Learn the SKILL.md format, progressive disclosure, and how to install skills in one command.
9 min read · Claude Code15 Best Claude Code MCP Servers for 2026
The most useful MCP servers for Claude Code — databases, browsers, docs, and dev platforms — with what each one does and how to install any of them in one command.
10 min read · Claude CodeClaude Code Best Practices: 12 Tips for Better Results
Twelve practical habits that make Claude Code faster and more reliable — from writing a strong CLAUDE.md to planning changes, managing context, and building a custom setup.
10 min read · Claude Code