Font Fallback Stack Generator
Generate production-ready CSS font-family stacks with proper cross-platform fallbacks. Choose from 90+ curated Google Fonts across 5 categories - Sans Serif, Serif, Monospace, Display, and Handwriting. Each category comes with multiple curated fallback stack options covering macOS, Windows, Linux, iOS, and Android system fonts. Preview your stack live, copy the CSS declaration, the @import snippet, or any stack variant - all with one click. Completely free, no signup required.
Select a primary font and a fallback category to generate your CSS font-family stack.
Or switch to "Quick Presets" for ready-to-use recommendations.
Curated Font Collection
Choose from 90+ curated Google Fonts across 5 categories - Sans Serif, Serif, Monospace, Display, and Handwriting. Search by name and filter by category to find your font fast.
Intelligent Fallback Stacks
Each category has multiple system-fallback stack options generated automatically. The most comprehensive stack is recommended by default, with alternatives for different compatibility needs.
One-Click CSS Export
Copy the complete font-family declaration, @import snippet, or individual stack variants with one click. Every snippet is production-ready with proper quoting and fallback order.
Live Font Preview & Presets
See your font stack rendered immediately with custom sample text. Quick Presets provide 7 ready-to-use recommendations covering modern, classic, code, display, and handwriting use cases.
Web Development
Generate production-ready font-family stacks for any project. Copy the CSS declaration directly into your stylesheet, CSS-in-JS, or Tailwind config with proper fallbacks for every browser.
UI/UX Design Handoff
Include the exact font stack in design handoff documentation. Developers get a complete, ordered fallback chain instead of a vague "use a sans-serif font" note in the spec.
Design System Tokens
Define font-family tokens in your design system with consistent, cross-platform fallback stacks. Ensure typography renders predictably across all supported platforms.
Editorial & Blog Layouts
Build reliable serif and sans-serif stacks for long-form reading. A well-crafted fallback stack ensures readability remains high even when the primary font fails to load.
Game & Creative Web UIs
Display and handwriting fonts need careful fallback planning. Generate stacks for bold headlines, decorative elements, and custom UI that degrade gracefully.
Email Templates
Email clients have limited font support. A robust fallback stack with web-safe fonts like Georgia, Arial, and Courier ensures your email typography renders correctly everywhere.
What Is a Font Fallback Stack?
A font-family stack is a comma-separated list of fonts in your CSS. The browser tries each font in order - if the primary font is not installed or fails to load, it falls back to the next one. A well-crafted stack ensures text is always readable, even when your custom web font is unavailable.
How the Stacks Are Generated
This tool combines your chosen primary font (Google Font or any custom font name) with curated system-fallback lists organised by category. Each category - Sans Serif, Serif, Monospace, Display, and Handwriting - has multiple stack variants from basic (Arial, Helvetica, sans-serif) to comprehensive (Apple system fonts, Segoe UI, Roboto, etc.).
Why Fallbacks Matter for Performance
Even with font-display: swap, there is a brief moment where the fallback font renders before the custom font loads. A good fallback stack with similar metrics (x-height, width, weight) reduces Cumulative Layout Shift (CLS) and provides a smoother reading experience. This is critical for Core Web Vitals.
Choosing the Right Fallback Category
Always match the fallback category to your primary font. A serif primary font should fall back to serif system fonts, not sans-serif. Mismatched categories cause jarring visual shifts when the fallback renders. This tool automatically selects the primary font's category as the default fallback category.
Font Pair Explorer
Browse 40+ curated Google Font pairings for headings and body text. Preview with custom text and copy CSS snippets instantly.
Font Size Converter
Convert font sizes between px, em, rem, %, pt, and vw. Set base font size and see a reference table of common values.
Google Fonts Previewer
Preview any Google Font with custom text, size, weight, and line-height. Compare two fonts side-by-side. Copy @import and link tags.
Line Height Calculator
Calculate optimal line-height based on font size and font family. Shows px, unitless, and percentage values with live preview.
A font-family stack is a prioritized list of fonts in your CSS. The browser attempts to use the first font; if it's not available or fails to load, it tries the next one, and so on. Example: font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;. This ensures text is always displayed in a readable font.
This tool generates comprehensive, cross-platform stacks that cover macOS, Windows, Linux, iOS, Android, and ChromeOS. Writing these manually is error-prone - you might forget a platform-specific font (like -apple-system for macOS) or use incorrect quotes. The tool ensures every stack is correct and complete.
Each category has multiple stack variants. Stack 1 (Recommended) is the most comprehensive - it covers all major operating systems with system-native fonts. Stack 2 is a shorter fallback for older browsers. Stack 3 is the minimal web-safe fallback. Use the comprehensive stack for broad compatibility.
Yes - font names with spaces (like "Times New Roman") must be quoted. Generic keywords (serif, sans-serif, monospace, cursive) and system font names starting with a dash (like -apple-system) should NOT be quoted. The tool handles quoting correctly in all generated output.
Yes. Click "Select a font…" and you can type any font name in the search - even if it's not in the curated list. The tool will generate the fallback stack using your custom font name. For custom fonts, you'll need to host them yourself or use a different font service.
The font-family declaration and font-display property work together. font-display controls the loading behaviour (swap, fallback, optional), while the font-family stack controls what renders during the loading period. A good fallback stack ensures the swap font looks similar to the custom font, reducing layout shift.
CLS measures visual stability - unexpected layout shifts during page load hurt the user experience. When a custom web font loads, text may shift if the fallback font has different metrics. A well-matched fallback stack minimizes this shift. Our tool recommends fallback fonts with similar characteristics to your primary font.
Yes. Add the stack to your tailwind.config.js under theme.extend.fontFamily. For example: fontFamily: { heading: ['Playfair Display', 'Georgia', 'Cambria', 'serif'] }. Then use font-heading in your HTML. The tool outputs the stack in a format you can paste directly into your config.
Yes - email clients have very limited font support. Most only render web-safe fonts like Arial, Helvetica, Georgia, Times New Roman, Courier, and Verdana. Email-safe stacks should be shorter and rely on these universally available fonts. Our Sans Serif and Serif fallback stacks work well for email.