About AmpWhat

Amp What is a quick, interactive reference of thousands of HTML character entities and common Unicode characters, 8859-1 characters, quotation marks, punctuation marks, accented characters, symbols, mathematical symbols, and Greek letters, icons, and markup-significant & internationalization characters.


  1. Unicode.org, “Latest Unicode.org international character reference”
  2. Unicode.org, “CLDR Data”
  3. Unicode.org, “Emoji Data” and “Emoji Sequences”
  4. W3, “HTML entities”
  5. W3, “Using character escapes in markup and CSS”


I originally built Amp-what using Remy Sharp's excellent work and supplemented it with my own annotations. I imported documents such as hacker jargon, and added hundreds of my own annotations (after watching for zero-result searches by my users). Now, much of this data is included in Unicode reference documents, although there's still a long pipeline combining different source data. No matter what data it contains, AmpWhat continues to presents the Unicode reference materials in a way I think is most discoverable and fun.

Thanks to Mathias Bynens for correcting me several times, but more importantly, for contributing immensely to the subtle craft of drawing text. His name pops up whenever I have a question about something tricky. AmpWhat also uses jsesc.

Steve Deach, an early mentor, got me interested in text layout, typography, and I dare say, SGML-- before it was hip.

an interaction
NDP Software

Comments? amp-what@ndpsoftware.com

© 2011-2022 NDP Software and Andrew J. Peterson. All Rights Reserved.
Comments? amp-what@ndpsoftware.com

Here is the original announcement.