beta v2.0

Tools Hub

Professional utilities for digital engineers.// Optimized for efficiency and precision.

UTM Builder

Marketing link constructor with validation and presets.

A/B Calculator

Statistical significance (Z-test) and confidence intervals.

Messenger Links

Direct link generator for WhatsApp, Telegram and Viber.

OG Previewer

Visual Open Graph tag editor for social networks.

JSON Formatter

Validation, formatting and syntax highlighting for JSON.

ROI / ROAS

Ad spend ROI and unit economics calculator.

Wi-Fi QR Code

QR code generator for instant Wi-Fi network joining.

UTM Parser

Decode and analyze parameters in marketing URLs.

Sample Size Calc

A/B test sample size calculator (Evan Miller formula).

QR Code Generator

Create a QR code for any link, text, or contact.

Base64 Encoder

Encode and decode text to/from Base64 format with UTF-8 support.

Regex Tester

Test regular expressions with live match highlighting and capture groups.

Cron Validator

Validate cron expressions, see next run times, and field breakdown.

Color Picker

Convert HEX/RGB/HSL/CMYK, color harmonies, palette, and WCAG contrast.

YouTube Thumbnail

Download YouTube video thumbnails in max HD quality.

Image Compressor

Compress JPEG/PNG/WebP images in-browser — no server uploads.

Password Generator

Cryptographically secure password generator.

Why Tools Hub?

Free & Private

Every tool runs entirely in your browser. Nothing is uploaded or transmitted to a server. Your data stays 100% private — no account, no telemetry, no paywalls.

Built for Marketers & Developers

From UTM builders and A/B test calculators to JSON formatters and regex testers — all the tools you actually need, in one place. No bloat, no distractions.

Always Free

Tools Hub is and will remain entirely free. We believe professional-grade tools should be accessible to everyone, from solo marketers to engineering teams.