Fix frequent microtypography errors in multiple languages. Write neat texts without bothering about typography rules. Typopo works for English, German, Slovak, Czech and Rusyn language.

• Official website
• Online app
• VS Code extension and the corresponding repository
• NPM package
• Support the project, buy me a coffee
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• Links
• Contents
• Features
• Use
  • Online app
  • VS Code extension
  • Installation
    • ES Module (Recommended)
    • CommonJS
    • Browser/UMD
  • API
• News & Releases
• Support
• Feedback
• License
• Special thanks

Typopo fixes microtypography hiccups in five languages:

• English
• German
• Czech
• Slovak
• Rusyn

Typopo fixes punctuation:

• double quotes (and accidentally typed punctuation related to the use of double quotes)
• direct speech introduction (colon/comma before opening double quotes)
• double primes
• single quotes (with an assumption they are used as secondary and in pairs)
• single primes
• apostrophes
• hyphens & dashes
  • between words with a proper spacing per locale
  • between ordinal and cardinal numbers (e.g. 1–3 eggs)
  • within date (e.g. 2020–08–04)
  • between percentage range (e.g. 20–30 %)
• period & ellipsis

Typopo fixes whitespace characters:

• removes extra white spaces
  • at the beginning and the end of sentences (leading and trailing spaces)
  • between words and paragraphs
  • before or after punctuation (where applicable)
  • around an ellipsis and an aposiopesis (where applicable)
  • between a number sign (#) and a number
  • before ordinal indicators (e.g. 1 st → 1st)
• removes empty lines
• fixes non-breaking spaces
  • removes a nbsp between multi-letter words
  • replaces a space with a nbsp
    • after one-word prepositions
    • around “×”,
    • after “&”, “§”, “¶”, “©”, “℗”, “№”
    • after cardinal numbers
    • after ordinal numbers
    • after ordinal Roman numerals
    • before single capital letters that are part of the phrase (e.g. Project X)
    • after name initials (e.g. Philip K. Dick)
    • after common single-word and multiple-word abbreviations
    • before % (percent), ‰ (per mille), ‱ (per myriad)

Typopo fixes words:

• accidental uPPERCASE
• the spelling of e.g., i.e., a.m. and p.m.
• ISSN and ISBN formatting

Typopo fixes symbols:

• multiplication sign (2 x 3 → 2 × 3)
• copyright ((c)2020 → © 2020)
• sound recording copyright ((p)2020 → ℗ 2020)
• registered trademark (Brand(r) → Brand®)
• service mark (Brand(sm) → Brand℠)
• trademark (Brand(tm) → Brand™)
• plus-minus sign (+-, -+ → ±)
• square and cube exponents (e.g. 100 µm² → 100 µm², 50 km³ → 50 km³)

You can use Typopo as an online app, VS Code extension, or NPM package.

URL → https://typopo.org/

The online app is useful especially when you’re a book designer or a DTP operator. Before you typeset raw texts in a DTP app of your choice, run it through Typopo and fix microtypography with a single click.

For modern Node.js and bundler environments:

npm install typopo

import { fixTypos } from 'typopo';

For legacy Node.js environments or when require() is needed:

const { fixTypos } = require('typopo');

For direct browser usage without a bundler:

<script src="https://unpkg.com/typopo/dist/typopo.umd.js"></script>
<script>
  const correctedText = typopo.fixTypos('Your text here');
</script>

Check out the API section for usage details.

Fix typos in given text (string) and locale; with an optional configuration:

fixTypos(string, locale, [configuration])

Locale options (supported languages):

• "en-us" (English, default)
• "rue" (Rusyn)
• "sk" (Slovak)
• "cs" (Czech)
• "de-de" (German)

Optional configuration as a JavaScript object:

configuration = {
	// If true, removes empty lines between paragraphs
	removeLines : true, 
  
	// if true, removes empty spaces before a nested Markdown list or blockquote; 
	// set as false when you use Typopo to fix typography of your Markdown files and you want to keep the nesting
	removeWhitespacesBeforeMarkdownList : true, 

	// if true, markdown code blocks (i.e. `code`, ``code``, ```code```) will be ignored from being identified as incorrectly used single quote or double quote pairs
	// set as false when you want to fix typos in generic texts (non-Markdown files)
	// set as true when you want to keep Markdown code blocks in your Markdown files
	keepMarkdownCodeBlocks: false,
}

Check out the Release notes, or typopo_app on X.

If you love Typopo and you find it helpful, buy me a coffee.

Your support will let me continue improving Typopo ecosystem—the app, NPM package and VS Code Extension.

Have you found a bug? Do you have an idea for a feature request? You’re more than welcome to submit an issue here on GitHub.

If you prefer to email, drop me a line at [email protected].

Licensed under MIT license. (See LICENCE.TXT.)

• @Viclick, @tomashruby, @vit-svoboda for technical consultancy
• @skurzinz for consultation on German typography
• Filip Blažek for consultation on Czech typography