[BIO_EN — one or two sentences: what you build, how long you have been doing it, and why these tools exist. Example: "Backend developer working with Node and Angular since 2015. Built Fastway Tools after getting tired of pasting production data into websites that upload it."]
Articles by this author
What QR Codes Are and How to Create One
QR codes turn a URL or text into a scannable square. Here is how they work and how to generate one for free in your browser.
· 4 min read
How to Generate Realistic Test Data
Need names, emails, and IDs to test your app? Generate realistic fake data locally — no real user records required.
· 4 min read
How Cryptography Protects Your Data (A Practical Guide)
Cryptography is the engine behind passwords, tokens, and secure communication. Here is what every developer and curious user should know.
· 6 min read
Compound vs. Simple Interest: What's the Difference?
Simple interest is charged on the original amount; compound interest is charged on the growing balance. The gap is huge over time.
· 5 min read
How Loan Payments Work (and How to Calculate Them)
Every fixed loan payment splits between interest and principal. Here is how the monthly figure is calculated and why early payments barely move the balance.
· 5 min read
Why Client-Side Tools Are More Private
Client-side tools process your data in the browser and never upload it. Here is why that matters and how to tell the difference.
· 4 min read
How to Format, Validate, and Compare JSON
A practical guide to cleaning up messy JSON, catching syntax errors, and diffing two payloads — all in the browser.
· 5 min read