Developer Tools

30 In-Browser Tools

JSON formatter, validator, JWT debugger, UUID generator, base64/URL encoders, and Web Crypto hash calculators. Zero cloud uploads — runs locally on your machine in volatile memory.

Subcategories:

Developer Tools

30 In-Browser Tools Private

JSON formatter, validator, JWT debugger, UUID generator, base64/URL encoders, and Web Crypto hash calculators.

JSON Formatter, Validator & Tree Viewer

formatter

Format, beautify, minify, validate JSON data with exact syntax error highlighting and interactive tree inspection.

Base64 Text Encoder & Decoder

encoder

Encode and decode standard UTF-8 text strings to and from Base64 representation.

URL Encoder & Decoder

encoder

Percent-encode and decode query parameters, path components, and complete URLs.

JWT Decoder & Token Inspector

decoder

Decode JSON Web Tokens (JWT) into human-readable Header, Payload, and Signature components.

UUID v4 Generator

generator

Generate cryptographically secure random UUID Version-4 identifiers in bulk.

Cryptographic Hash Generator

generator

Generate SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes from text strings or files.

Unix Timestamp & Epoch Converter

converter

Convert Unix epoch timestamps (seconds and milliseconds) to human-readable dates and vice versa.

RegEx Tester & Match Highlighter

tester

Test regular expressions in real-time with syntax error detection, group capture breakdown, and match highlighting.

XML to JSON & JSON to XML Converter

converter

Bidirectionally convert data structures between XML documents and JSON objects.

HTML Entity Encoder & Decoder

encoder

Encode special characters into HTML entities (&, <, >) and decode entities back to plain text.

CSS Minifier & Compressor

formatter

Minify CSS stylesheets by stripping comments, spaces, newlines, and trailing semicolons to maximize load speed.

Cron Expression Generator & Human Parser

generator

Generate and decode standard 5-part cron expressions with human-readable English explanations.

SQL Query Formatter & Beautifier

formatter

Beautify, indent, and uppercase SQL queries with clean syntax formatting.

YAML to JSON & JSON to YAML Converter

converter

Convert configuration files seamlessly between YAML and JSON formats.

Strong Password Generator

security

Generate cryptographically secure random passwords, memorable passphrases, and numeric PINs with entropy measurement.

JSON Diff & Compare Tool

json

Compare two JSON objects or files semantically with key-by-key added, removed, and modified highlighting.

cURL to Fetch & Code Converter

converter

Convert cURL command-line requests into JavaScript fetch(), Axios, Python requests, and Go net/http code.

Regex Explainer & Interactive Pattern Tester

tester

Test regular expressions with real-time capture group visualization and plain-English pattern token breakdown.

JWT Inspector & Claims Security Analyzer

security

Decode and inspect JSON Web Tokens (JWT) with claim validation, expiration timeline, and security vulnerability analysis.

SQL Query Formatter & Syntax Beautifier

sql

Format, indent, beautify, and standardize unformatted SQL queries with uppercase keywords and line wrapping.

YAML to JSON Parser & Structure Validator

formats

Convert YAML configurations to clean JSON structures and vice versa with syntax error validation.

Cron Expression Generator & Human Explainer

automation

Build, debug, and translate standard 5-part cron schedule expressions into plain English descriptions.

Base64 File Encoder & Binary Decoder

encoding

Convert binary files, PDFs, and images into Base64 Data URIs and decode Base64 strings back to downloadable files.

JSON to XML Converter & Formatter

data

Convert structured JSON payloads to clean, indented, and well-formed XML documents with customizable root tags.

JSON to YAML Converter & Beautifier

data

Convert complex JSON configurations into clean, human-readable YAML for Docker Compose, Kubernetes, and CI/CD pipelines.

UUID v5 Generator (Deterministic SHA-1 Namespaces)

security

Generate deterministic, reproducible RFC 4122 UUID version 5 identifiers from DNS, URL, OID, or custom namespaces.

JSON to TypeScript Interface & Type Generator

code-generation

Generate strongly-typed TypeScript interfaces and type definitions from JSON data.

JSON Schema (Draft-07) Auto-Generator

code-generation

Generate standards-compliant JSON Schema (Draft-07) definitions from sample JSON data.

SQL CREATE TABLE to TypeScript Interface Converter

code-generation

Generate TypeScript type definitions and interfaces from SQL DDL CREATE TABLE statements.

Developer JSON Toolkit & Data Transformation Suite

workflows

All-in-one developer workspace to format, validate, minify, diff, and generate TypeScript from JSON.