Stack Sans Text

OFL-1.1 | Updated: Feb 2026

About Stack Sans Text

Classification
sans-serif
Weights
Variable (100-900)
Features
Variable
SIL Open Font License 1.1

Free to use, modify, and distribute. Can be used commercially without attribution.

What's allowed?
  • Client work
  • SaaS / Web apps
  • YouTube / Video
  • Sell products
  • Print materials

Note: Derivative fonts must use the same license.

Full license guide →
Get Stack Sans Text Free ↗

Stack Sans Text is a sans-serif typeface designed by Dylan Young at Koto (a global brand agency with studios in Berlin, London, LA, New York, and Sydney), created specifically for Stack Overflow, the world's largest developer Q&A platform. Part of the broader Stack Sans family (which includes Headline and Notch variants), the Text variant is optimized for body copy and sustained reading of the technical content that defines Stack Overflow's platform. It includes 520 glyphs with support for 286 languages, and features subtle notched detailing that connects it to the coding and building process central to Stack Overflow's identity.

Design and Character

Rooted in modernist sans-serif principles, Stack Sans Text features clean, functional letterforms with comfortable spacing and even text color for extended reading. The typeface was refined through the requirements of one of the internet's most text-heavy platforms, where millions of developers daily read dense technical Q&A answers for comprehension rather than scanning.

Best For

  • Developer documentation and Q&A platforms
  • Technical content interfaces
  • Code-adjacent prose and articles
  • Knowledge base and wiki systems
  • Technology company branding

Technical Features

  • Variable font: Continuous weight axis from Light (300) to Bold (700)
  • Body text optimization: Tuned for sustained reading at 14-18px with comfortable spacing
  • Developer-friendly glyphs: Clear differentiation between l/1/I and O/0
  • Stack Sans family: Companion Headline and Notch variants available

Usage Tips

Use Regular weight for body text in Q&A and documentation contexts. Medium works well for subheadings and emphasis. Pair with a monospace font like JetBrains Mono or Source Code Pro for code blocks adjacent to prose.

FAQ

What is the difference between Stack Sans Text, Headline, and Notch?

Stack Sans Text is optimized for body copy and sustained reading. Stack Sans Headline is designed for display sizes with proportions suited for headlines and large text. Stack Sans Notch features distinctive notched detailing inspired by the building and coding process, giving it a more expressive character for branding and display use.

Who designed Stack Sans Text?

Stack Sans was designed by Dylan Young at Koto, a global brand agency with studios in Berlin, London, LA, New York, and Sydney. Koto created the Stack Sans family as part of Stack Overflow's brand identity refresh.

Is Stack Sans Text on Google Fonts?

Yes, Stack Sans Text is available for free on Google Fonts. Get Stack Sans Text on Google Fonts ↗

Compare Stack Sans Text

See how Stack Sans Text compares to other fonts side by side.

Variable Font Axes

Stack Sans Text is a variable font with 1 axis you can fine-tune.

Axis Min Default Max
wght 300 400 700

Font Pairings

Fonts that pair well with Stack Sans Text based on contrast and complementary design characteristics.

Inconsolata + Stack Sans Text
92/100
mono + sans-serif
Enterprise Accessibility
Source Code Pro + Stack Sans Text
92/100
mono + sans-serif
Enterprise Accessibility
Space Mono + Stack Sans Text
92/100
mono + sans-serif
Enterprise Accessibility
Koh Santepheap + Stack Sans Text
78/100
serif + sans-serif
Enterprise
Roboto Slab + Stack Sans Text
78/100
serif + sans-serif
Enterprise Accessibility

Performance

Key metrics for evaluating Stack Sans Text in production.

Score
72 /100 Good
File Size
88.4 KB Light
Weights
9 (variable)
Languages
2 groups CDN delivery

Font Metrics

x-Height Ratio
0.56
Cap Height Ratio
0.7
Ascender
1000
Descender
-300

Fallback CSS Overrides

Apply these overrides to Arial to minimize layout shift when loading Stack Sans Text.

@font-face {
  font-family: 'Stack Sans Text Fallback';
  src: local('Arial');
  ascent-override: 100%;
  descent-override: 30%;
  line-gap-override: 0%;
  size-adjust: 107.99%;
}
woff2 Measured via Google Fonts API Metrics extracted from WOFF2

How to Use Stack Sans Text

Copy these code snippets to quickly add Stack Sans Text to your project.

Quick Start

CSS code for Stack Sans Text

@import url('https://fonts.googleapis.com/css2?family=Stack+Sans+Text:wght@100..900&display=swap');