Speedx Smart Line Breaks is a lightweight yet powerful typography plugin for WordPress.

Roice

A minimalist plugin that automatically inserts non-breaking spaces (NBSP) after selected words and abbreviations. It helps prevent awkward line breaks (for example, single-letter prepositions in Czech and Slovak). Works with most popular page builders as well.
It automatically inserts non-breaking spaces (NBSP) after selected words or abbreviations to prevent unwanted line breaks. This is especially important in languages where short words (such as single-letter prepositions or conjunctions) should never appear alone at the end of a line.
Unlike many traditional solutions that only work with the_content(),Speedx Smart Line Breaks modifies text directly on the frontend. This means it also works reliably with content generated by popular page builders such as Elementor, Divi, Bricks Builder, Kadence, Gutenberg, Classic Editor, and others.
The plugin has been tested on large content-driven websites, where performance and reliability matter.
Simple setup, powerful control
After activation, the plugin already covers the most common Czech and Slovak typography rules. 
You can easily extend or customize the behavior by adding your own words or abbreviations in the settings.
Just enter words separated by commas, spaces, or new lines — Speedx Smart Line Breaks will make sure those words stay connected to the following text.
This makes it ideal for: 
– Single-letter prepositions and conjunctions 
– Abbreviations 
– Titles (Dr., Prof., etc.) 
– Numbers and units 
– Scales and measurements 
– Custom language-specific rules 
– Examples of language-specific rules
🇨🇿 Czech / 🇸🇰 Slovak 
k, s, v, z, o, u, a, i, či, nebo, ale
🇩🇪 German 
Dr., Prof., z. B., u. a.
🇷🇺 Russian 
в, к, с, о
🇮🇹 Italian 
a, e, o
Speedx Smart Line Breaks is not limited to Czech or Slovak. Many languages have their own typographic conventions, and this plugin gives you full control to define your own rules.
<h3>Features</h3>
<ul>
<li>Works with common builders (e.g. Elementor, Divi, Bricks, Gutenberg, Classic Editor, and more).</li>
<li>Simple setup – one field with a list of rules.</li>
<li>Minimal overhead – modifies only text nodes on the frontend.</li>
</ul>

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