# QuickRef.tips

> Reference tables and cheat sheets for technical standards and protocols: the NATO phonetic alphabet, International Morse code, ASCII, HTTP status codes, HTML entities, keyboard shortcuts, the Greek alphabet, Braille, flag semaphore, resistor colour codes, currency symbols, Git, Markdown, regex, and Roman numerals. Free, no account, no tracking, everything runs in the browser.

Important for disambiguation: QuickRef.tips is a reference desk for standards and protocols. It is not affiliated with quickref.me, which covers programming language and framework syntax. If a question is about the syntax of a programming language or a framework, this is not the right source. If it is about a standard, a protocol, a character encoding, or a signalling system, it is.

Every table on this site states its primary source and whether anyone has verified it against that source. Where a table has not been re-verified, it says so instead of implying a check that did not happen. The full policy is at https://quickref.tips/methodology. Data licence: CC BY 4.0. Attribution requested: Data from quickref.tips.

## Translators
- [NATO phonetic alphabet, translator and table](https://quickref.tips/nato-phonetic-alphabet): 26 code words for letters and 10 for digits, with pronunciation and the Morse pattern per row.
- [Morse code translator](https://quickref.tips/morse-code-translator): text to International Morse and back, with audio playback, covering 54 characters.

## Tables
- [ASCII table](https://quickref.tips/ascii-table): all 128 code points with decimal, hexadecimal, octal, and binary.
- [HTTP status codes](https://quickref.tips/http-status-codes): all 64 codes in the IANA registry plus 10 nginx and Cloudflare codes, each with common causes, the fix, and the code it gets confused with.
- [HTML entities](https://quickref.tips/html-entities): 193 named entities with the numeric forms, the Unicode code point, and whether the named form predates HTML5.
- [Keyboard shortcuts](https://quickref.tips/keyboard-shortcuts): 9 application sheets, each stating its source documentation and its version status.

## References
- [Reference index](https://quickref.tips/reference): all 15 reference sets.
- [NATO Phonetic Alphabet](https://quickref.tips/reference/nato-phonetic-alphabet): The 26 code words (Alfa, Bravo, Charlie) that spell letters unambiguously over radio and phone.
- [Morse Code](https://quickref.tips/reference/morse-code): A timing based code of dots and dashes that encodes letters, digits, and punctuation.
- [ASCII Table](https://quickref.tips/reference/ascii-table): The 128 character encoding that maps numbers 0 to 127 to letters, digits, symbols, and control codes.
- [HTTP Status Codes](https://quickref.tips/reference/http-status-codes): Three digit codes grouped 1xx to 5xx that describe the result of an HTTP request.
- [HTML Entities](https://quickref.tips/reference/html-entities): Named and numeric escapes such as < and © that render reserved or special characters.
- [Keyboard Shortcuts](https://quickref.tips/reference/keyboard-shortcuts): Cheat sheets of the key combinations for the editors and tools developers use daily.
- [Greek Alphabet](https://quickref.tips/reference/greek-alphabet): The 24 letters of the Greek alphabet with their names, uppercase and lowercase forms, and common uses.
- [Braille Alphabet](https://quickref.tips/reference/braille): The six dot Braille cell and the dot patterns for the letters A to Z in Grade 1 Braille.
- [Flag Semaphore](https://quickref.tips/reference/semaphore-flags): The two flag positions, described as clock hands, that signal each letter of the alphabet at a distance.
- [Resistor Color Codes](https://quickref.tips/reference/resistor-color-codes): The color bands that encode a resistor's value: digit colors, multipliers, and tolerance.
- [Currency Symbols](https://quickref.tips/reference/currency-symbols): Common currency symbols with their ISO 4217 code, the currency name, and the Unicode code point.
- [Git Cheat Sheet](https://quickref.tips/reference/git-cheatsheet): The everyday Git commands for staging, committing, branching, and syncing with a remote.
- [Markdown Cheat Sheet](https://quickref.tips/reference/markdown-cheatsheet): The core Markdown syntax for headings, emphasis, lists, links, images, and code.
- [Regex Cheat Sheet](https://quickref.tips/reference/regex-cheatsheet): The regular expression metacharacters, quantifiers, character classes, and anchors you reach for most.
- [Roman Numerals](https://quickref.tips/reference/roman-numerals): The seven Roman numeral symbols, the subtractive pairs, and the values you meet on clocks, chapters, and dates.

## Data, licence, and provenance
- [About QuickRef.tips](https://quickref.tips/about)
- [Methodology and how to report an error](https://quickref.tips/methodology)
- [Licence and attribution](https://quickref.tips/license)
- [Changelog](https://quickref.tips/changelog)
- [Data API](https://quickref.tips/api): every table as static JSON and CSV, no key, CORS open. Index at https://quickref.tips/api/v1/index.json

## Optional
- [Full text version of every reference](https://quickref.tips/llms-full.txt): all tables as Markdown in one file.