To improve page speed in Webflow and eliminate render-blocking resources, you'll need to optimize how scripts, styles, and media are loaded to enhance the first paint.
1. Defer or Move Custom Scripts
- Place custom scripts in the Footer instead of the Head. Go to Page Settings > Custom Code > Footer Code and move any non-essential JavaScript there.
- Use the “defer” or “async” attribute for third-party script URLs when possible. In Webflow, you can manually add these in the script tag when embedding via Custom Code.
2. Minimize and Consolidate CSS
- Use Webflow’s built-in CSS minification: Enabled by default in Site Settings > Publishing > Minify CSS.
- Consolidate styles by minimizing the use of multiple Webflow style sheets across different symbols and pages.
3. Optimize and Lazy-Load Images
- Use Webflow’s built-in responsive image generation by uploading high-resolution images once; Webflow handles multiple sizes automatically.
- Apply lazy loading (loading="lazy") to all offscreen images and videos. Webflow adds this by default for most image elements.
4. Limit Use of Web Fonts
- Reduce the number of custom fonts and weights. Only use essential font family variants (e.g., Regular and Bold) to minimize font file size.
- Avoid multiple font providers (like mixing Google Fonts with Typekit).
5. Use Preload Strategically
- Use on-page Custom Code to preload critical assets (e.g., above-the-fold images or your main font). Example:
<link rel="preload" as="font" href="..." type="font/woff2" crossorigin>
. - Keep in mind Webflow does not yet offer a native UI for preload directives, so this must be coded manually.
6. Reduce Third-Party Scripts and Integrations
- Audit for unnecessary chat widgets, analytics tools, or embeds (e.g., YouTube iframes, heatmaps).
- Load third-party scripts only when needed or after user interaction (e.g., load YouTube after someone clicks a play button).
7. Delay Non-Critical Animations
- Use the “While page is scrolling” or “After page load” triggers wisely in interactions.
- Eliminate or delay animations that slow down initial viewport rendering.
- In Site Settings > Publishing, ensure both Minify HTML and Minify CSS are enabled.
- Enable asset compression via Webflow’s automatic asset optimization.
Summary
To speed up your Webflow site’s first paint and reduce render-blocking resources: move scripts to the footer with defer/async, minify and combine CSS, lazy-load images, streamline fonts, and limit third-party tools. These steps will significantly improve load time and user experience.