Thoughts, tutorials, and insights on web development
What is a hash, why is MD5 'broken' but still useful, and when should you use SHA-256? A plain-English guide to hashing — including why you never 'decrypt' a hash.
Base64 turns binary data into plain text so it can travel safely through systems built for text. Here's what it is, what it isn't (it's not encryption!), and when to use it.
Regex looks like line noise until it clicks. This beginner-friendly guide explains the core syntax with examples and shows how to test patterns live before you ship them.
Most password advice is outdated. Here's what actually makes a password hard to crack, why a random 16-character password beats 'P@ssw0rd!', and how to generate one privately in your browser.
Every photo from your phone carries your exact GPS location, the time it was taken and your device model. Here's how to see that hidden data — and remove it without losing image quality.
Create QR codes for links, WiFi, text and more — and learn the practical tips (size, contrast, error correction) that make them actually scan reliably.
PNG, JPEG and WebP each win in different situations. Here's a clear, practical breakdown of when to use each — with real guidance on quality, transparency, and file size.
Reorder, rotate and delete pages, add text and highlights, sign documents and fill forms — all for free in your browser, with no upload and no watermark.
Turn one or many JPG, PNG or WebP images into a single, tidy PDF — with the right page order, size and margins. Free and entirely in your browser.