THE SA NERD'S
TOOLKIT.
Free tools and honest tech guides. Made in South Africa, built for the world.
Tools that actually work
Password Generator
Generate secure, random passwords instantly with customizable options for length and character types.
SA ID Validator
Validate South African ID numbers and extract information like date of birth, gender, and citizenship.
JSON Formatter & Validator
Format, validate, and minify JSON data. Features syntax highlighting and error detection.
Regex Tester
Test and evaluate regular expressions in real-time with syntax highlighting and match details.
Colour Picker & Converter
Pick colours and convert between HEX, RGB, and HSL formats. Includes WCAG contrast checking.
VAT Calculator
Calculate South African VAT (15%) easily. Add or remove VAT from any amount.
Built for Anywhere
Global tools, accessible everywhere, no VPN required.
No fluff
Every tool does one thing well. Free tools, no paywalls.
Private Tools
Tool data stays in your browser. Tools run client-side.
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Worth reading
How PAYE Works in South Africa: A Simple Guide for 2025
Understand the basics of the Pay-As-You-Earn (PAYE) tax system in South Africa, how it's calculated, and what it means for your salary.
Serverless Functions Explained: A Deep Dive into the Future of Cloud Computing
Discover what serverless functions are, how they work, and why they are revolutionizing the way we build and deploy applications in the cloud.
Demystifying Quantum Computing: Why It Matters for the Future
Quantum computing sounds like science fiction, but it's rapidly becoming a reality. Learn how qubits work and why they threaten modern encryption.
20 AI tools reviewed with a South African perspective
We checked what works globally, what it costs in ZAR, and what to watch out for.
Browse the AI directory