All Developer Utilities

Search and filter our complete suite of 46 offline, client-side tools.

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JSON Formatter & Validator

JSON

Format, validate against Schema, and minify JSON with smart fixes.

jsonformat

JSON Compare

JSON

Compare two JSON documents side-by-side to find differences.

jsoncompare

JSON Minifier

JSON

Minify and compress JSON by removing all whitespace and newlines.

jsonminify

XML Formatter

Converters

Format, validate, and minify XML instantly. Supports XML 1.0 and namespaces.

xmlformat

JSON to YAML

Converters

Convert JSON objects to clean YAML format instantly.

jsonyaml

JSON to TypeScript

Converters

Generate TypeScript interfaces and types from JSON data automatically.

jsontypescript

JSON to C# Class

Converters

Generate C# classes from JSON data automatically.

jsoncsharp

JSON to CSV

Converters

Convert JSON array data to CSV format.

jsoncsv

JSON Escape String

Converters

Escape or unescape JSON string characters.

jsonescape

CSV ↔ JSON

Converters

Convert between CSV and JSON formats effortlessly.

csvjson

CSS / JS Minifier

Converters

Minify or beautify CSS and JavaScript code.

cssjs

SQL Formatter

Converters

Format, beautify, and layout SQL database queries with custom dialect parameters.

sqlformat

SQL Sandbox

Converters

Run in-browser SQL queries against CSV or JSON files with a custom query engine.

sqlsandbox

HTML Entity Encoder

Web & Frontend

Safely encode special characters to HTML entities or decode them.

htmlencode

URL Parser

Web & Frontend

Parse, edit, and reconstruct URLs and query strings.

urlparse

URL Encode/Decode

Web & Frontend

Safely encode special characters for query strings and URLs.

urlencode

Image → Base64

Web & Frontend

Convert images to Base64 data URIs for embedding in HTML/CSS.

imagebase64

Image Converter

Web & Frontend

Convert images client-side between standard formats (PNG, JPEG, WebP, GIF, BMP).

imageconvert

SVG → Image

Web & Frontend

Convert vector SVG XML code or files to rasterized PNG or JPEG formats.

svgpng

ICO Generator

Web & Frontend

Convert standard images into multi-resolution .ico favicon files locally.

icofavicon

Image Compressor

Web & Frontend

Compress and optimize images locally to reduce file sizes.

imagecompress

Image Combiner

Web & Frontend

Combine two images side-by-side or stacked with custom spacing and alignment.

imagecombine

Base64 Encode/Decode

Security

Encode text or files to Base64 and decode Base64 strings

base64encode

JWT Decoder

Security

Decode and inspect JSON Web Token header, payload and signature

jwtjson web token

SHA-256 Hasher

Security

Calculate cryptographic hashes for text or files without server transmission.

sha256hash

UUID Generator

Generators

Generate cryptographically secure UUIDs v4 in bulk.

uuidgenerate

QR Code Generator

Generators

Generate customizable QR codes for URLs, Wi-Fi credentials, contact info.

qrqrcode

Mock Data Generator

Generators

Generate massive datasets of random names, emails, addresses, and more.

mockdata

Lorem Ipsum Generator

Generators

Generate realistic placeholder text for designs and mockups.

loremipsum

Regex Tester

Text Tools

Test regular expressions against target text with real-time highlighting.

regexregexp

Text Diff

Text Tools

Compare two text snippets side-by-side to find differences.

diffcompare

Markdown Preview

Text Tools

Live preview Markdown syntax while you type.

markdownpreview

Cron Expression Generator

Text Tools

Generate and translate Cron expressions to plain English.

cronschedule

Timestamp Converter

Text Tools

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

timestampunix

Color Converter

Text Tools

Convert colors between HEX, RGB, HSL, and CMYK formats.

colorhex

Text Utilities

Text Tools

Case converter and real-time word/character counter tool.

textcase

YAML ↔ JSON Converter

Converters

Convert YAML configuration payloads to structured JSON files instantly.

yamljson

HTML Formatter & Beautifier

Web & Frontend

Format and beautify HTML documents with custom indentation levels.

htmlformat

RSA Key Generator

Security

Generate secure RSA public/private key pairs and SSH keys locally.

rsassh

Bcrypt Hasher & Verifier

Security

Hash passwords and verify text against Bcrypt hashes locally and securely.

bcryptpassword

Base64 to File Converter

Converters

Decode Base64 strings back into their original binary files (PDF, PNG, ZIP, etc.) locally.

base64file

Git Command Generator

Text Tools

Generate the exact Git commands for common workflow scenarios interactively.

gitcommand

JSON Schema Generator

JSON

Convert sample JSON payloads into fully draft-compliant JSON Schema structures.

jsonschema

CSS Glassmorphism & Shadow Generator

Web & Frontend

Generate modern CSS backdrop-filter glassmorphism and box-shadow styles with a live preview.

cssglassmorphism

Number Base Converter

Converters

Convert numbers between Binary, Octal, Decimal, Hexadecimal, Base36, and Base62 with BigInt precision.

baseconverter

HTML Preview Tool

Web & Frontend

Live interactive HTML viewer and previewer with sandbox isolation.

htmlpreview

Privacy-First Developer Toolbox

Welcome to our comprehensive suite of offline-first developer tools. Every single tool here runs 100% locally in your web browser using HTML5, client-side JavaScript, and Web Workers. We guarantee that your sensitive keys, JSON payloads, personal certificates, and source code are never uploaded to any remote server.

Designed to streamline daily coding workflows, this toolbox provides modern web utilities with instant offline execution, PWA installation support, and responsive developer-focused design.

Key Features

•
100% Client-Side Processing: Zero server calls, protecting your data privacy.
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Instant Response: Powered by local execution for lag-free formatting and conversion.
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Offline Capability: Installable as a PWA to work seamlessly even without internet access.
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Comprehensive Toolsets: From JSON syntax validation to cryptographic key generation.