The Toolzen Blog
Guides, comparisons and product notes on building — and using — privacy-first, browser-based tools.
How to Create a Strong Password You'll Remember
The strongest password is one you never have to reset. Here's the passphrase method, the generator method, and the mistakes that quietly break both.
Is a Typed Signature Legally Valid?
Quick answer: yes, in most countries a typed, drawn, or uploaded signature is legally binding for the vast majority of everyday documents, as long as you intended to sign and can show it.
Dog Years to Human Years: The Real Science
The "multiply by 7" rule is a myth. Here's how vets actually estimate a dog's human age, and why breed size changes the math.
JPG vs PNG vs WebP: Which Format to Use
Quick answer: JPG for photos, PNG for transparency and screenshots, WebP when you can use it for either. Here's how to choose in under a minute.
Character Limits for Every Social Platform (2026)
Quick answer: X/Twitter is 280 characters (25,000 for Premium), Instagram captions are 2,200, LinkedIn posts are 3,000. Here's the full list, plus how to check your draft before you post.