Free Developer Tools

Base64

Encode & decode Base64 strings instantly

Encoder/Decoder

URL encode and decode strings with ease

HTML Entity

Encode and decode HTML entities (&, <, >…)

JWT Decoder

Decode JSON Web Tokens — view header, payload & expiry

JWT Encoder

Generate signed JSON Web Tokens with HS256, HS384, or HS512

JSON Formatter

Format, validate, and minify JSON with pretty-printing

JSON to String

Convert JSON objects to escaped strings and back

JSON to CSV

Convert JSON arrays to CSV with comma, tab, semicolon, or pipe delimiters

CSV to JSON

Convert CSV data to JSON arrays with auto type-casting

YAML ↔ JSON

Convert between YAML and JSON instantly — supports all standard types

Word Counter

Count words, characters, lines, sentences, and reading time

Case Converter

Convert between camelCase, snake_case, kebab-case & more

Diff Checker

Compare two text blocks and see line-by-line differences

Lorem Ipsum

Generate placeholder text by paragraphs, sentences, or words

Markdown Preview

Write Markdown and see live rendered HTML side by side

UUID Generator

Generate cryptographically random UUID v4 identifiers

Password Generator

Generate strong random passwords with entropy scoring

Color Theme

Generate matching color palettes from any hex color

Hash Generator

Generate SHA-256, SHA-512, SHA-384, and SHA-1 hashes

FauxImage

Placeholder image generator for mockups and prototypes

Image Compressor

Compress JPEG, PNG & WebP images in your browser — lossless for PNG, near-lossless for JPEG

Image Resizer

Resize JPEG, PNG & WebP images to exact dimensions with optional aspect ratio lock

SVG Optimizer

Minify and compress SVG files — remove editor bloat, comments, empty groups, and whitespace with live preview

QR Code Generator

Generate QR codes for URLs, text, emails or phone numbers — download as PNG or SVG

Favicon Generator

Upload a logo and generate all favicon sizes — ICO, PNG, Apple, Android, PWA — with HTML tags and a ZIP download

SQL Formatter

Format and beautify SQL queries with proper indentation and keyword casing

HTML Formatter

Beautify or minify HTML with proper indentation

CSS Formatter

Beautify or minify CSS stylesheets instantly

Epoch

Unix timestamp converter and date utility

Cron Parser

Translate cron expressions to plain English with next run times

Regex Tester

Test regular expressions with live match highlighting

Number Base

Convert between binary, octal, decimal, and hexadecimal

URL Parser

Break any URL into protocol, host, path, query params, and hash

OG Validator

Validate Open Graph and Twitter Card tags for any URL — get a score, fix issues, preview social shares

IP Lookup

See your public IPv4 and IPv6 addresses plus geolocation — country, continent, ASN, and coordinates

PDF Editor

Add text annotations to any PDF page and download the updated file

PDF Compressor

Reduce PDF file size with low, medium, or high compression

PDF Merger

Combine multiple PDF files into one — upload, reorder, and merge

PDF Page Remover

Delete pages from a PDF by clicking thumbnails and download the result