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CSS Grid Layout Explained: fr, Gap vs Flexbox
CSS Grid is a two-dimensional layout model that controls rows and columns at the same time.
How to Simplify Ratios and Solve Proportions
A ratio compares two quantities, written A to B. Simplifying it means dividing both sides by their greatest common divisor until the numbers are as small as they can be, so 1920:1080 becomes 16:9.
Why Pasted Text Breaks Mid-Sentence (and Fixes)
Text copied from PDFs, emails, and terminals often has a line break at the end of every display line instead of only at the end of each paragraph. Pasting it leaves broken, ragged lines.
How to Calculate and Reverse Sales Tax
Adding sales tax is easy: multiply the price by the rate and add it on. Removing tax from a total is the one that trips people up, because you divide by one plus the rate, not subtract the rate.
JSON to TOML: Convert Config Files the Right Way
TOML is a typed configuration format used by Cargo, Poetry, Hugo and a lot of Rust and Go tooling.
What Do HTTP Status Codes Mean? 1xx to 5xx
An HTTP status code is a three-digit number a server sends back to describe the result of a request.
How to Crack a Caesar Cipher Without the Key
A Caesar cipher replaces each letter with one a fixed number of positions further along the alphabet. Shift by 3 and A becomes D.
How to Convert JSON to SQL INSERT Statements
The JSON to SQL Converter turns a JSON array of objects into CREATE TABLE and INSERT statements for MySQL, PostgreSQL, SQLite, or standard SQL.
How JWT Signing Works: HS256 vs HS384 vs HS512
A JWT generator turns a JSON payload plus a secret into a signed token. Paste your claims, pick HS256, HS384, or HS512, enter the secret, and copy the token.