Blog & guides
Practical tips, security guides, and productivity advice for the free tools you use every day.
How to Optimize Images for the Web — Speed, Quality, and SEO Impact
Learn the practical techniques to compress, resize, and format images for faster websites and better search rankings.
JSON Formatting, Validation & Debugging — A Developer's Complete Guide
Malformed JSON breaks APIs, configs, and deployments. Learn how to format, validate, and debug JSON effectively — plus common pitfalls that trip up even experienced developers.
Base64 Encoding Explained — What It Is, How It Works, and When to Use It
Base64 turns binary data into text. Learn exactly how the encoding works, where developers use it daily, and the common mistakes to avoid.
How Mortgage Payments Actually Work — Principal, Interest, and the Amortization Trick
Your first mortgage payment is mostly interest. Your last is mostly principal. Understanding this shift can save you tens of thousands of dollars over the life of your loan.
Salary vs. Hourly: How to Compare Job Offers Without Getting Tricked by the Numbers
A $60,000 salary sounds better than $28/hour — until you do the math. Learn how to convert between salary and hourly, account for unpaid time, and compare the real value of job offers.
How to Create Strong Passwords You Can Actually Remember
Ditch "password123" for good. Learn the science behind uncrackable passwords and the passphrase technique that makes them memorable.
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