Thoughts, tutorials, and insights on web development
Why some PDFs shrink by 80% and others barely move — and how to reduce PDF file size the right way, entirely in your browser, with nothing uploaded to a server.
Need to break a big PDF into smaller files or pull out specific pages? Here's how to split a PDF by page range or into single pages — entirely in your browser.
Got a WebP file an app won't accept? Convert it to JPG or PNG in seconds — or go the other way and shrink your JPG/PNG images into WebP. Free, private, in your browser.
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Most password advice is outdated.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.