Is Toolkita free to use?

Yes, all tools are completely free. No subscription, no account, and no usage limits.

Do I need to create an account?

No. Every tool works instantly in your browser without any registration or login.

Yes. All processing happens entirely inside your browser. No data is sent to any server.

What tools does Toolkita include?

Toolkita includes JSON formatter, SQL formatter, Base64 encoder, URL encoder, JWT decoder & generator, hash generator, UUID generator, password generator, QR code generator, barcode generator, regex tester, color picker, timestamp converter, image compressor, PDF merger, PDF splitter, PDF to JPG, JPG to PDF, XML formatter, XML to JSON, YAML to JSON, CSV to JSON, and more.

100% client-side & private

Developer tools,
right in your browser.

36 essential utilities — format, convert, generate, and encode. Entirely client-side. Your data never leaves your device.

Try JSON Formatter

JSON

JSON Formatter

Format, validate, and minify JSON data instantly.

Converters

JSON to Spring DTO

Convert JSON to Java Records, Lombok classes, or POJO DTOs for Spring Boot.

Spring Repo to SQL

Convert Spring Data JPA repository methods to Postgres, MySQL, Oracle, or SQLite queries.

Spring Props / YAML

Convert between Spring Boot application.properties and application.yml format.

XML Formatter

Beautify XML data for readability.

XML to JSON

Convert XML structure into JSON format.

YAML to JSON

Convert YAML configuration into JSON.

CSV to JSON

Parse and convert CSV data into JSON arrays.

SQL Formatter

Beautify and format messy SQL queries.

JSON to TS

Convert JSON to TypeScript interfaces.

Text & Code

Diff Checker

Compare two text blocks and highlight differences.

Markdown Preview

Live preview markdown to HTML.

SVG Formatter

Format and preview raw SVG code.

Web & UI

URL Parser

Parse URLs into host, path, and query parameters.

Cron Parser

Convert cron expressions to human-readable text.

CSS Unit Converter

Convert CSS units (px to rem).

Color Contrast

Check WCAG color contrast ratio.

Encode & Security

Base64 Encoder

Encode and decode text to/from Base64 format.

URL Encoder/Decoder

Encode or decode strings for safe URL usage.

JWT Generator

Create custom JSON Web Tokens (JWT) with payload.

JWT Decoder

Decode and inspect JSON Web Tokens safely.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

Password Analyzer

Check password strength and crack time.

Bcrypt Generator

Generate and compare bcrypt hashes.

Generators

UUID Generator

Generate robust version 4 UUIDs quickly.

Password Generator

Create strong, secure passwords with customizable options.

QR Code Generator

Generate custom QR codes from text or URLs.

Barcode Generator

Create standard 1D barcodes for your products.

Utilities

Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa.

Regex Tester

Test and debug Regular Expressions with real-time highlighting.

Color Picker

Pick colors, convert formats (HEX, RGB, HSL), and discover palettes.

PDF & Image

Image Compressor

Compress PNG and JPEG images to reduce file size without losing quality.

PDF Merger

Combine multiple PDF files into a single document.

PDF Splitter

Extract pages from a PDF or split it into multiple files.

PDF to JPG

Convert PDF pages into high-quality JPG images.

JPG to PDF

Convert and merge JPG images into a single PDF document.

Developer tools, right in your browser.