Developer Tools

Free, fast tools for developers. Format JSON, encode/decode, generate hashes, and more.

JSON Tools

JSON Formatter

Format, validate, and beautify JSON with syntax highlighting.

Open Tool
JSON Tools

JSON Validator

Validate JSON syntax and get clear error messages.

Open Tool
JSON Tools

JSON to CSV

Convert JSON array to CSV format.

Open Tool
JSON Tools

CSV to JSON

Convert CSV text to JSON array.

Open Tool
JSON Tools

JSON to XML

Convert JSON to XML format.

Open Tool
JSON Tools

JSON Minifier

Minify JSON by removing whitespace and newlines.

Open Tool
JSON Tools

JSON Pretty Print

Format JSON with indentation for readability.

Open Tool
File Converters

XML to JSON

Convert XML into JSON format.

Open Tool
File Converters

JSON to YAML

Convert JSON into YAML.

Open Tool
File Converters

YAML to JSON

Convert YAML into JSON.

Open Tool
File Converters

CSV to TSV

Convert CSV into TSV.

Open Tool
File Converters

TSV to CSV

Convert TSV into CSV.

Open Tool
File Converters

Base64 to Image

Preview Base64 image data as an image.

Open Tool
File Converters

Image to Base64

Convert an image file to Base64 (data URL).

Open Tool
Encoding Tools

Base64 Encoder

Encode text to Base64.

Open Tool
Encoding Tools

Base64 Decoder

Decode Base64 to text.

Open Tool
URL Tools

URL Encoder

Encode text for use in URLs.

Open Tool
URL Tools

URL Decoder

Decode URL-encoded text.

Open Tool
Encoding Tools

HTML Encoder

Encode text to HTML entities.

Open Tool
Encoding Tools

HTML Decoder

Decode HTML entities to text.

Open Tool
Security Tools

JWT Decoder

Decode and inspect JWT header and payload.

Open Tool
Security Tools

UUID Generator

Generate UUID v4 identifiers.

Open Tool
Security Tools

UUID Validator

Validate UUID strings (v1–v5).

Open Tool
Security Tools

Password Generator

Generate secure random passwords.

Open Tool
Security Tools

SHA256 Generator

Compute SHA-256 hash of text.

Open Tool
Security Tools

MD5 Generator

Compute MD5 hash of text.

Open Tool
Text Tools

Regex Tester

Test regular expressions and highlight matches.

Open Tool
Text Tools

Regex Generator

Generate regular expressions from common patterns.

Open Tool
Text Tools

Regex Explainer

Explain regular expressions in plain language.

Open Tool
Text Tools

Text Diff Checker

Compare two texts and see differences.

Open Tool
Text Tools

Remove Duplicate Lines

Remove duplicate lines from text.

Open Tool
Text Tools

Sort Text Lines

Sort lines of text alphabetically.

Open Tool
Text Tools

Word Counter

Count words, characters, and lines.

Open Tool
Text Tools

Case Converter

Convert text to camelCase, snake_case, kebab-case, and more.

Open Tool
Text Tools

Slug Generator

Generate URL-friendly slugs from text.

Open Tool
Text Tools

Random String Generator

Generate random strings with configurable charset.

Open Tool
Text Tools

Lorem Ipsum Generator

Generate placeholder lorem ipsum text.

Open Tool
Text Tools

JSON Diff Viewer

Compare two JSON objects and show differences.

Open Tool
Web Development Tools

CSS Minifier

Minify CSS code.

Open Tool
Web Development Tools

CSS Beautifier

Format and beautify CSS.

Open Tool
Web Development Tools

JS Minifier

Minify JavaScript code.

Open Tool
Web Development Tools

HTML Minifier

Minify HTML by removing comments and extra whitespace.

Open Tool
Web Development Tools

JS Beautifier

Format and beautify JavaScript.

Open Tool
Web Development Tools

Meta Tag Generator

Generate common SEO meta tags for a page.

Open Tool
Web Development Tools

Robots.txt Generator

Generate a robots.txt file for your site.

Open Tool
Date & Time Tools

Timestamp Converter

Convert date/time ↔ timestamp.

Open Tool
Date & Time Tools

Unix Timestamp Converter

Convert Unix timestamp seconds ↔ date/time.

Open Tool
Color Tools

Color Converter

Convert HEX ↔ RGB ↔ HSL.

Open Tool
URL Tools

URL Parser

Parse a URL into components and query params.

Open Tool
Web Development Tools

HTTP Header Parser

Parse raw HTTP headers into key/value pairs.

Open Tool
Web Development Tools

Cron Expression Generator

Build a cron expression from common fields.

Open Tool
Date & Time Tools

Date Difference Calculator

Calculate the difference between two dates.

Open Tool
Date & Time Tools

Timezone Converter

Convert a date/time between common timezones.

Open Tool
Date & Time Tools

Date Format Converter

Convert dates between common formats.

Open Tool
Color Tools

HEX to RGB

Convert HEX colors to RGB.

Open Tool
Color Tools

RGB to HEX

Convert RGB colors to HEX.

Open Tool
Color Tools

Color Picker

Pick a color and copy values in multiple formats.

Open Tool
Color Tools

Gradient Generator

Generate CSS gradients and preview them.

Open Tool
Color Tools

CSS Shadow Generator

Generate CSS box-shadow values with preview.

Open Tool
URL Tools

Query String Parser

Parse query strings into key/value pairs.

Open Tool
URL Tools

UTM Link Generator

Generate UTM-tracked URLs for campaigns.

Open Tool
Text Tools

Text Reverser

Reverse text by characters or by lines.

Open Tool
Text Tools

Random Text Generator

Generate random words/sentences for test data.

Open Tool
File Converters

Markdown to HTML

Convert Markdown into HTML.

Open Tool
File Converters

HTML to Markdown

Convert HTML into Markdown.

Open Tool
Developer Utilities

HTTP Status Code Lookup

Lookup HTTP status codes and meanings.

Open Tool
Developer Utilities

Regex Cheatsheet Generator

Quick regex syntax cheatsheet for developers.

Open Tool
Developer Utilities

Password Strength Checker

Estimate password strength and provide feedback.

Open Tool
Developer Utilities

Port Number Lookup

Lookup common TCP/UDP port numbers.

Open Tool
File Converters

JSON to TypeScript Interface

Generate TypeScript interfaces from JSON.

Open Tool
Security Tools

bcrypt Generator

Generate bcrypt hashes in the browser for testing.

Open Tool
Security Tools

JWT Generator

Create a signed JWT (HS256) from header/payload.

Open Tool
Security Tools

Hash Compare

Compare text vs a hash using common algorithms.

Open Tool
Security Tools

Checksum Generator

Generate checksums (SHA-256 / MD5) for text.

Open Tool
Security Tools

Random Token Generator

Generate secure random tokens for testing.

Open Tool
Web Development Tools

Htaccess Generator

Generate common .htaccess snippets.

Open Tool
Web Development Tools

Favicon Generator

Generate a simple favicon data URL from text/color.

Open Tool
Web Development Tools

Open Graph Preview

Preview how Open Graph meta tags render as a card.

Open Tool