Developer Tools on FindPicked

Free Online Tools - Developer & Utility Tools

Sun, 12 Apr 2026 00:00:00 +0000

How to Convert CSV to JSON Online Free

Sun, 12 Apr 2026 00:00:00 +0000

CSV and JSON are the two most common data interchange formats on the web — but they don’t speak the same language. If you’ve ever needed to feed spreadsheet data into an API, migrate a database, or transform a flat file into a nested structure, you’ve hit this wall. Here’s how to convert CSV to JSON quickly, correctly, and without installing anything.

Why Convert CSV to JSON?

CSV (Comma-Separated Values) is the universal export format for spreadsheets, databases, and legacy systems. JSON (JavaScript Object Notation) is the standard for web APIs, NoSQL databases, and modern application configs. Converting between them is one of the most frequent data-wrangling tasks developers and analysts face.

How to Decode a JWT Token (Without a Library)

Sun, 12 Apr 2026 00:00:00 +0000

JWT (JSON Web Token) is the most widely used token format for authentication on the web. If you’ve ever worked with OAuth, API keys, or session tokens, you’ve almost certainly encountered a JWT. Here’s how to decode one, understand what’s inside, and avoid the security pitfalls that catch even experienced developers.

What Is a JWT?

A JWT is a compact, URL-safe string that carries a JSON payload. It looks like this:

JavaScript Beautifier

Sun, 12 Apr 2026 00:00:00 +0000

Base64 Encoder & Decoder

Fri, 10 Apr 2026 00:00:00 +0000

Chmod Calculator

Fri, 10 Apr 2026 00:00:00 +0000

Crontab Expression Generator

Fri, 10 Apr 2026 00:00:00 +0000

CSV to JSON Converter

Fri, 10 Apr 2026 00:00:00 +0000

Hash Generator (MD5, SHA-256, SHA-512)

Fri, 10 Apr 2026 00:00:00 +0000

How to Format JSON Online (Free, No Signup)

Fri, 10 Apr 2026 00:00:00 +0000

Whether you’re debugging an API response, cleaning up a config file, or validating data — messy JSON is one of the most common developer headaches. Here’s how to format JSON online in seconds.

Why Format JSON?

Raw JSON from APIs often comes as a single line of text with no whitespace. This makes it nearly impossible to read, debug, or edit. Formatted JSON adds proper indentation and line breaks, making the structure immediately visible.

How to Test Regex Online (with Live Matching & Debugging)

Fri, 10 Apr 2026 00:00:00 +0000

Regular expressions are powerful but notoriously hard to get right. Testing them in real-time with match highlighting saves hours of debugging. Here’s how.

How to Test Regex Online

Open our Regex Tester
Enter your regex pattern in the pattern field
Set flags (g = global, i = case-insensitive, m = multiline)
Paste your test string below
See matches highlighted instantly as you type

Essential Regex Patterns (Cheat Sheet)

Common Patterns

Pattern	Matches	Example
`\d+`	One or more digits	“123”, “42”
`\w+`	Word characters	“hello”, “user_1”
`[a-zA-Z]+`	Letters only	“Hello”, “world”
`\s+`	Whitespace	spaces, tabs, newlines
`.+`	Any character (except newline)	anything

Practical Examples

Email validation:

HTML Entity Encoder & Decoder

Fri, 10 Apr 2026 00:00:00 +0000

HTTP Status Codes Reference

Fri, 10 Apr 2026 00:00:00 +0000

JSON Formatter & Validator

Fri, 10 Apr 2026 00:00:00 +0000

JSON to CSV Converter

Fri, 10 Apr 2026 00:00:00 +0000

JSON to YAML Converter

Fri, 10 Apr 2026 00:00:00 +0000

JWT Token Decoder

Fri, 10 Apr 2026 00:00:00 +0000

Markdown to HTML Preview

Fri, 10 Apr 2026 00:00:00 +0000

Regex Tester & Debugger

Fri, 10 Apr 2026 00:00:00 +0000

Text Diff Checker

Fri, 10 Apr 2026 00:00:00 +0000

Text to Binary Converter

Fri, 10 Apr 2026 00:00:00 +0000

Unix Timestamp Converter

Fri, 10 Apr 2026 00:00:00 +0000

URL Encoder & Decoder

Fri, 10 Apr 2026 00:00:00 +0000

UUID Generator (v4)

Fri, 10 Apr 2026 00:00:00 +0000

Best Claude Code Skills 2026 - Curated Directory of AI Coding Skills

Mon, 01 Jan 0001 00:00:00 +0000

What are Claude Code Skills?

Skills are markdown files (SKILL.md) that give Claude Code specialized expertise in specific domains. When you install a skill, Claude automatically activates it when your task matches the skill’s trigger conditions.

For example:

Install the Homepage Audit skill → Claude can systematically score and improve your landing pages
Install the STRIDE Analysis skill → Claude can perform structured threat modeling
Install the SEO Optimizer skill → Claude can audit your content for search ranking improvements

How Skills Work

You install a SKILL.md file to ~/.claude/skills/
Claude detects the skill automatically on startup
When relevant, Claude applies the skill’s specialized knowledge
No configuration needed — skills are plug-and-play

Skill Quality Varies

There are 31,700+ skills on GitHub, but quality varies enormously. Some are well-crafted frameworks from major open source projects (Next.js, PyTorch, Electron). Others are auto-generated stubs with no real content.