LogoDev & Data Toolbox

All-in-One Developer & Data Toolbox

A comprehensive collection of free, privacy-first tools for developers, designers, writers, and data analysts. Everything runs in your browser - your data never leaves your device.

100% Client-Side Processing

Tools by Category

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Data & Developer Tools

Professional tools for developers and data analysts.

Cron Job Generator
Cron Job Generator

Create cron expressions with a simple UI.

CSS Gradient Generator
CSS Gradient Generator

Design gradients visually and get CSS code.

Advanced Color Picker
Advanced Color Picker

Pick colors from images, screen, or use advanced color tools.

URL Encoder / Decoder
URL Encoder / Decoder

Encode or decode URLs instantly.

JSON Formatter / Validator
JSON Formatter / Validator

Format and validate JSON data.

JSON Converters
JSON Converters

Convert JSON to multiple formats: CSV, YAML, XML, and more.

Base64 Encoder / Decoder
Base64 Encoder / Decoder

Encode text and files to Base64 or decode Base64 back to original format.

Hash Generator
Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes of text input using Web Crypto API.

UUID / GUID Generator
UUID / GUID Generator

Generate UUIDs/GUIDs in multiple versions (v1, v4, v5) with various formatting options.

JWT Decoder & Verifier
JWT Decoder & Verifier

Decode and verify JSON Web Tokens with real-time validation and signature verification.

Epoch & Unix Timestamp Converter
Epoch & Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates with live current time display.

QR Code Generator
QR Code Generator

Create custom QR codes for URLs, WiFi networks, contact information, email, SMS, and location coordinates with logo support.

Random Number Generator
Random Number Generator

Generate cryptographically secure random numbers with advanced options. Perfect for contests, games, decisions, and statistical sampling.

CSV Viewer & Editor
CSV Viewer & Editor

View, edit, sort, filter, and manipulate CSV files directly in your browser. Import CSV files, edit data in a spreadsheet-like interface, and export results instantly.

Data Table Generator from JSON or CSV
Data Table Generator from JSON or CSV

Convert JSON arrays or CSV data into beautifully formatted HTML tables with styling options. Perfect for documentation, reports, and web content creation.

Why Choose Our Tools?

Privacy First

All processing happens in your browser. Your data never leaves your device.

Lightning Fast

No server round-trips. Instant results with client-side processing.

Free Forever

No registration, no ads, no tracking. Just free tools for everyone.