Prompt
Type with Purpose
Good typography guides attention, improves understanding, and makes communication effortless.
The Anatomy of a Typeface
By FontSide · June 2026
Every typeface is a system of decisions — about stroke contrast, x-height, spacing, and rhythm. The best ones feel invisible: you stop seeing the letters and start hearing the voice behind them. That transparency is the hardest thing to design.
A high x-height opens up the counters and makes small text breathe. Tight tracking pulls a headline together; loose tracking gives a caption room to exhale. None of these choices are accidents — they are arguments about how reading should feel.
Uppercase
Lowercase
Numerals
Symbols
Configuration
Select the weights and styles you want to include in your project.
Weights
Styles
Package Manager
The recommended way to use fonts in modern web projects.
1. Install Package
pnpm add @fontsource/prompt 2. Import in App
// Please select at least one weight and style 3. CSS Usage
body {
font-family: "Prompt", sans-serif;
} Google Fonts CDN
Use Google's CDN to embed the fonts directly via HTML.
HTML <head>
<!-- Please select at least one weight and style --> Fontsource CDN
Skip the build step by adding this directly to your global CSS file.
Global CSS
/* Please select at least one weight and style */ Background & Story
Prompt in Thai means “ready,” the same as in English. Prompt is a loopless Thai and sans Latin typeface. The simple and geometric Latin was developed to work harmoniously with the loopless Thai that has wide proportions and airy negative space. It is suitable for both web and print usage, such as magazines, newspapers, and posters.
A similarity between some glyphs such as ก ถ ภ ฤ ฦ, ฎ ฏ, บ ป, ข ช is something to take into consideration because it might lead to confusion when typesetting very short texts. Formal loopless Thai typefaces are simplified, compared to traditional looped Thai types, and this simplification has to be done properly in order to preserve the essense of each character. The size and position of Thai vowel and tone marks has been managed carefully, because they are all relevant to readability, legibility, and overall texture.
The Prompt project is led by Cadson Demak, a type foundry in Thailand. To contribute, see github.com/cadsondemak/prompt
Tags & Moods
Subsets
Install
pnpm add @fontsource/prompt Designed by
Cadson Demak
Links
License
OFL-1.1