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Tips, tutorials, and updates from the Molixa team
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How to Verify a File Checksum (SHA-256)
Downloaded an ISO or installer and want to confirm it was not corrupted or tampered with? Here is how to generate and compare a SHA-256 checksum on Windows, Mac, and Linux, by command line or by drag-and-drop in your browser.
Impermanent Loss in DeFi, Explained
Provide liquidity and you might earn less than just holding. That gap is impermanent loss. Here is the math, a worked example, and how to minimize it.
When to Use Base64 Images in CSS (and When Not To)
Data URIs feel faster but often aren't. A clear rule for when inlining base64 images in CSS helps versus hurts: HTTP-request savings vs the 33% bloat, lost caching, and render-blocking on mobile.
What Is a Good Keyword Density in 2026?
Keyword density isn't a ranking dial, but stuffing still gets pages buried. Here's the honest 1-3% framing for 2026, how to measure it with n-grams, and what to optimize instead.
How Compound Interest Works (+ Rule of 72)
Compound interest earns money on your money and on the interest it already made. Here is the formula in plain English, why compounding frequency matters, and the Rule of 72 shortcut to estimate doubling time, plus a calculator to see it.
Base64URL vs Base64: What's the Difference?
Standard base64 breaks inside URLs because + and / are reserved. Base64URL fixes it with two character swaps and dropped padding. Here is exactly when you must use each, with a side-by-side decoder.
Free Paraphrasing Tools With No Word Limit (2026)
QuillBot caps free users at 125 words. We compare the genuinely free, no-word-limit paraphrasers in 2026 on quality, modes, and privacy.
MD5 vs SHA-256 vs bcrypt for Passwords
MD5 is broken, raw SHA-256 is too fast for passwords, and bcrypt was built for exactly this job. Here is the developer's guide to choosing a password hash in 2026: speed, salting, work factors, and where Argon2 fits.
APR vs APY in Crypto Staking: The Difference
A 100% APR and a 100% APY are not the same return. Compounding is the difference, and in DeFi it can swing your yield by double digits. Here is the full breakdown.
Convert SVG to PNG at High Resolution (Retina)
Why exported PNGs look blurry and how to fix it: understand the 1x/2x/3x retina convention, choose 96 vs 300 DPI, keep a transparent background, and convert fonts to paths before rasterizing.
How to Add Open Graph Tags for Social Sharing
Make your links look great when shared: the essential Open Graph and Twitter Card tags, the right og:image size, where they go in the head, and how to preview before you ship.
How Much House Can I Afford? The 28/36 Rule
The price tag a lender approves is not what you can actually afford. This guide applies the 28/36 rule, debt-to-income math, and full PITI to show what your salary really buys, with a calculator to model it.