Developer Tools

Format, validate, debug, convert and analyze developer data online.

16 Tools 100% Free Client-Side
Tools
Hot

Color Picker

Pick, convert, and copy colors instantly between HEX, RGB, RGBA, HSL, HSV, and CMYK using...

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Hot

JSON Formatter

Format and beautify JSON online, minify it back down, browse data in a collapsible tree vi...

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Hot

JSON Validator

Validate JSON online against the strict RFC 8259 spec, catching trailing commas, duplicate...

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Hot

CSS Formatter & Minifier

Minify CSS online by stripping comments, whitespace, and redundant units, shrinking styles...

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Hot

Hash Generator & File Checksum Verifier

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files instantly, then compar...

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URL Encoder & Decoder

Encode or decode URLs and query strings instantly, with automatic parsing of paths, parame...

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Hot

Unix Timestamp & Epoch Converter

Convert Unix timestamps to readable dates and back in real time, with a live epoch clock,...

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Hot

HTML Formatter & Validator

Beautify or minify HTML markup instantly, with customizable indentation, attribute formatt...

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Hot

Markdown Previewer

Write and preview GitHub-flavored Markdown live, with instant HTML export, syntax-highligh...

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JSON to CSV Converter

Convert JSON to CSV instantly, flattening nested objects, remapping or reordering headers,...

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CSV to JSON Converter

Convert CSV to JSON right in your browser, with auto-detected delimiters, typed values, an...

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SQL Formatter

Format and beautify SQL queries with custom indentation and keyword casing, or minify them...

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JavaScript Minifier

Minify JavaScript online by removing comments and whitespace and shortening syntax, cuttin...

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JWT Decoder & Inspector

Decode JWT tokens online to view header, payload, and signature, check expiration, and ver...

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Base64 Encoder Decoder

Encode or decode Base64 strings, images, and files instantly, with full UTF-8 support for...

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Popular in Developer Tools

Top utilities used daily

FEATURED
#1
Color Picker
#2
JSON Formatter
#3
JSON Validator
#4
CSS Formatter & Minifier

Complete Developer Tools Tools Directory

Direct links to all 16 active calculators & utilities

16 Tools
Color Picker
JSON Formatter
JSON to CSV Converter
JSON Validator
CSV to JSON Converter
SQL Formatter
CSS Formatter & Minifier
JavaScript Minifier
JWT Decoder & Inspector
Hash Generator & File Checksum Verifier
Base64 Encoder Decoder
URL Encoder & Decoder
Regex Tester & Debugger
Unix Timestamp & Epoch Converter
HTML Formatter & Validator
Markdown Previewer
Suite Overview

About Developer Tools

Format, validate, debug, convert and analyze developer data online. Paste JSON, XML, YAML, SQL, CSS, or HTML and get a readable result you can copy or download immediately.

Key Advantages & Capabilities

RFC Specifications

Checks JSON, XML, and YAML payloads against official structure parameters.

Syntax Highlighter Panels

Beautiful editors with line numbers, error alerts, and collapsible nodes.

Bi-Directional Converters

Convert data back and forth between formats (e.g. JSON to YAML) instantly.

Local CSS & JS Minify

Compress scripts and styles locally to reduce file sizes for web projects.

How to Use the Developer Tools Suite

1

Open the Developer Tool

Choose between JSON Formatter, Minifier, Epoch Converter, or XML Validator.

2

Paste Payload or Code

Insert your raw code payload or configuration string in the editor.

3

Prettify or Minify

Click the action button, locate errors on specific lines, and copy the clean output.

Zero Data Storage

100% Client-Side Computation

All operations execute securely within your local browser sandbox. Sensitive data and financial inputs are never stored or logged on remote servers.

No Server Logs or Tracking
Zero Account or Signup Barrier
High Precision Mathematical Output
100% Private & Free Forever
16 Tools in Suite
100% Free Access
Instant Calculations
0 Login No Signup
Knowledge Base

Frequently Asked Questions

Everything you need to know about Developer Tools tools, usage, and privacy.

Yes, our JSON formatter validates entries according to the RFC 8259 specification and outputs clean syntax-highlighted blocks with accurate error detection.
Yes, both CSS and JS minifiers process modern frameworks, minifying spaces, combining colors, and stripping comments cleanly.
Yes, our JSON, HTML, and CSS formatters provide full syntax highlighting, bracket matching, line numbering, and collapsible nodes for clear readability.
Our tools check for basic JSON syntax validity, missing commas, unescaped quotes, or syntax errors, showing you the exact line number of any error.
Yes. We support formatting conversions from JSON to YAML, JSON to XML, and vice-versa, preserving structure levels.
Yes, our URL processing scripts follow RFC 3986 encoding standards, keeping character query strings perfectly formatted.
Yes. You can convert Unix epoch timestamps (seconds/milliseconds) to human-readable dates and local clock times.
Yes. You can generate custom lorem ipsum passages, sentences, or word counts, and copy them directly to clipboard.
Ecosystem Discovery

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