# Web Font Pairing Lab Preview a heading + body Google Fonts pairing with weight and line-height controls, and copy a ready-to-paste CSS @import + variables snippet. Curated 22-face registry plus 7 proven pairing presets. > Canonical page: https://elysiatools.com/en/tools/webfont-pairing-lab - **Category:** Design - **Keywords:** font pairing, google fonts, typography, web fonts, heading body font, css import, @import, font combination, typeface, webfont ## Overview Preview a **heading + body** Google Fonts pairing side by side, tune weight and line-height, and copy a ready-to-paste CSS snippet. **How to use** 1. Pick a **heading font** and a **body font** from the curated registry of 22 faces — serif, sans-serif, display, handwriting and monospace. 2. Set the **heading weight** and **body weight**; each font snaps to its nearest available Google Fonts weight. 3. Tune **body size** (px) and **line-height**; the preview updates live. 4. Optionally customize the **heading sample** and **body sample** text. 5. Copy the generated CSS — it contains a single `@import` loading only the two weights you picked, plus CSS variables (`--font-heading`, `--font-body`) and rules for `h1, h2, h3` and `body, p`. **Curated pairings** — the side panel suggests 7 proven combinations (editorial, SaaS, news, tech, handmade, poster, dev-tool) so you can start from a known-good base. The registry covers Inter, Roboto, Open Sans, Lato, Montserrat, Poppins, Work Sans, DM Sans, Nunito, Space Grotesk, Playfair Display, Merriweather, Lora, Source Serif Pro, Crimson Text, EB Garamond, Libre Baskerville, Oswald, Bebas Neue, Caveat, JetBrains Mono and Fira Code. The preview loads the chosen fonts directly from Google Fonts, so what you see is what ships. ## Inputs - **标题字体** (select): The display / heading typeface. - **标题字重** (number): Snaps to the nearest available weight for the chosen font. - **正文字体** (select): The body / paragraph typeface. - **正文字重** (number): Snaps to the nearest available weight for the chosen font. - **正文大小 (px)** (number): Body paragraph font-size in pixels. - **正文行高** (number): Unitless line-height for body text. 1.4–1.7 is the readable range. - **标题示例文本** (text): Optional custom heading text. Defaults to a neutral sample. - **正文示例文本** (textarea): Optional custom body paragraph(s). Defaults to a neutral sample. ## When to use - When designing a new website or digital product and you need to test how different Google Fonts look together before writing code. - When you want to optimize web performance by generating a single CSS @import statement that only loads the specific font weights you need. - When you need to quickly establish a readable typographic hierarchy with custom font sizes and line-heights for headings and body copy. ## How it works - Select a heading font and a body font from the curated registry of 22 popular typefaces. - Adjust the font weights, body size in pixels, and line-height to fine-tune readability and visual hierarchy. - Optionally enter custom heading and body text to preview how your actual content will render. - Copy the generated CSS snippet containing the optimized Google Fonts @import link and CSS variables. ## Use cases - Prototyping typography systems for SaaS landing pages using clean sans-serif pairings like Montserrat and Inter. - Designing editorial layouts or blogs with high-contrast pairings like Playfair Display for headings and Lora for body text. - Setting up developer documentation sites using monospace fonts like JetBrains Mono or Fira Code alongside clean body text. ## Frequently asked questions ### Can I use fonts outside of the curated registry? No, the tool is limited to the curated registry of 22 popular Google Fonts to ensure high-quality combinations. ### What does the generated CSS snippet include? It includes a single @import rule for the selected fonts and weights, CSS variables for --font-heading and --font-body, and basic selectors for headings and paragraphs. ### How does the tool handle font weights that are not available? The tool automatically snaps the selected weight to the nearest available weight supported by that specific Google Font. ### Does the preview load actual web fonts? Yes, the preview renders live by loading the selected fonts directly from the Google Fonts API. ### Can I customize the preview text? 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