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What Is an XML Formatter? Beautify vs Minify
An XML formatter re-writes a document's insignificant whitespace - the space *between* tags - without touching its meaning.
How to Calculate Discounts and Sale Prices
To find a sale price, multiply the original price by (100 − discount%) ÷ 100 - so 30% off a $50 item is $50 × 0.70 = $35.
How Many Characters Does the ASCII Table Have?
ASCII maps every basic English character and a set of control signals to the numbers 0–127; extended sets like ISO 8859-1 (Latin-1) fill in 128–255.
What Are Hreflang Tags? Format and Common Errors
hreflang tags tell search engines which language/region version of a page to serve each user, using the rel="alternate" hreflang="x" annotation.
What Is Schema Markup? How JSON-LD Code Works
Schema markup is structured data (using the schema.org vocabulary) that tells search engines exactly what a page is about, making it eligible for rich results like FAQ accordions, product prices, and breadcrumbs.
How to Write Numbers and Amounts in Words
A number-to-words converter spells a numeric value in English - 1,234 becomes "one thousand two hundred thirty-four." It handles cardinals (one, two, three), ordinals (first, second, third), currency ("one hundred dollars and fifty cents"), and decimals read digit by digit ("three point one four").
PX vs REM: How to Convert CSS Units by Hand
A CSS unit converter turns a value in one unit - px, rem, em, pt, or % - into the equivalent value in every other unit, based on a root font size you control (16px by default).
How to Read and Write Roman Numerals
The Roman Numeral Converter turns numbers into Roman numerals and decodes Roman numerals back into numbers, over the standard 1 to 3999 range.
How to Write in Morse Code: Letters and Spacing
The Morse Code Translator converts plain text to International Morse code and decodes Morse back to text, using the standard letter and word spacing so your output is unambiguous.