Framer image optimization is largely automatic. Framer compresses uploads, serves modern formats like WebP, generates responsive sizes, and lazy-loads images by default. Your job is to feed it the right source files and configure a few settings. Done well, this keeps your site fast, protects your Core Web Vitals, and improves search rankings without manual image wrangling.
What Framer Does Automatically
One of the strongest reasons to build on Framer is that it handles most performance work for you. When you upload an image, Framer processes it on the backend and serves an optimized version to each visitor. Understanding what happens under the hood helps you avoid fighting the system.
- Format conversion: Framer serves modern formats such as WebP when the visitor’s browser supports them, falling back gracefully when it does not.
- Responsive sizing: Framer generates multiple resolutions and delivers the size that fits the visitor’s screen and device pixel ratio, so phones do not download desktop-sized files.
- Compression: Uploads are compressed to reduce file size while keeping visual quality high.
- Lazy loading: Images below the fold load as the visitor scrolls toward them, reducing initial page weight.
- CDN delivery: Images are served from a global content delivery network, so they load quickly regardless of where the visitor is.
This automatic pipeline is why Framer sites often score well on speed tests with little manual effort. Your responsibility shifts from optimizing files by hand to providing good source material and configuring settings correctly.
Preparing Images Before You Upload
Garbage in, garbage out still applies. Framer optimizes what you give it, so starting with sensible source files produces the best results.
Size Source Files Sensibly
Do not upload a 6000 pixel wide photo for a thumbnail that displays at 400 pixels. While Framer will resize it, oversized originals waste processing and can occasionally produce a larger payload than necessary. A practical rule is to export source images at roughly twice the maximum display size to cover high-density screens, then let Framer handle the responsive variants.
Choose the Right Starting Format
Upload photographs as JPG and graphics with transparency or flat color as PNG. For vector content like logos and icons, use SVG, which stays crisp at any size and is tiny in file size. Framer will convert raster uploads to modern delivery formats automatically, so you do not need to manually create WebP files. If you want a deeper comparison of delivery formats, read our guide on WebP vs AVIF.
Compress Before Upload When It Helps
For very large photo libraries, running images through a compressor before upload can shave extra weight, though Framer’s own compression usually suffices. The bigger win is removing unnecessary metadata and avoiding uncompressed exports straight from a camera.
Configuring Images Inside Framer
Beyond the source files, a few in-editor choices affect performance and SEO.
Set the Right Object Fit
When you place an image in a frame, choose how it fills the space. Use fill or fit depending on whether you want cropping or letterboxing. Getting this right avoids visual stretching and helps maintain a stable layout, which protects your Cumulative Layout Shift score.
Always Write Alt Text
Every meaningful image needs descriptive alt text for accessibility and SEO. Framer provides an alt text field in the image properties. Decorative images can be left without alt text so screen readers skip them. For a full treatment, see our alt text for images guide.
Control Priority for the Hero Image
Lazy loading is great for below-the-fold content, but your hero image should load immediately because it is usually your Largest Contentful Paint element. Make sure your most important above-the-fold image is not deferred, so it appears as fast as possible and your LCP stays low.
Images and Core Web Vitals
Images are the single biggest factor in most performance scores. Three Core Web Vitals are directly affected by how you handle them.
- Largest Contentful Paint (LCP): Often your hero image. Keep it appropriately sized and load it eagerly so it renders quickly.
- Cumulative Layout Shift (CLS): Reserve space for images with fixed dimensions or aspect ratios so content does not jump as images load.
- Interaction to Next Paint (INP): Heavy image decoding can compete with interactivity, so avoid stacking many large images at the top of the page.
Framer’s responsive delivery and lazy loading address most of this for you. The remaining work is choosing the right hero image size and reserving layout space. For the bigger picture, read our Core Web Vitals guide.
Special Cases: Logos, Icons, and Animations
Use SVG for Logos and Icons
SVG files are vector based, so they scale perfectly and weigh almost nothing. Use them for logos, UI icons, and simple illustrations. They also stay sharp on retina displays without serving multiple resolutions.
Reach for Lottie Instead of Heavy GIFs
Animated GIFs are large and low quality. For looping animations and micro-interactions, use Lottie, which renders vector animations at a fraction of the file size. Framer supports Lottie natively, and you can learn the workflow in our Framer Lottie animations guide.
Be Deliberate With 3D and Spline
Interactive 3D scenes via Spline can be stunning but heavy. Use them where they add real value, ideally below the fold or on dedicated pages, and test their impact on load time before shipping.
An Image Optimization Checklist for Framer
- Export source images at roughly twice the display size, no larger.
- Upload photos as JPG, transparency as PNG, and logos as SVG.
- Let Framer handle format conversion and responsive sizing automatically.
- Write descriptive alt text on every meaningful image.
- Load the hero image eagerly and keep it sized for the viewport.
- Reserve layout space so images do not cause layout shift.
- Use Lottie for animation instead of GIFs.
- Run the published page through a speed test and review the heaviest assets.
Optimizing Background Images and Hero Sections
Background images deserve special attention because they are often large and load early. A full-width hero background can easily become the heaviest element on the page if you upload an oversized file. Size it for the largest viewport you support, then let Framer’s responsive delivery serve smaller versions to smaller screens.
Be deliberate about text-over-image readability too. Instead of darkening the entire image file before upload, which bakes in a fixed look, use a Framer overlay or gradient on top of the image. This keeps the source image clean, lets you adjust the overlay without re-exporting, and avoids shipping a needlessly dark or heavy file. For mobile, consider whether a busy background image even earns its place, since a simpler treatment often loads faster and reads better on small screens.
If your hero uses a video background, treat it with even more care than an image. Video files are far heavier, so provide a poster image that loads instantly, keep the clip short and compressed, and consider disabling autoplay video on mobile where bandwidth and battery matter most.
Auditing Image Performance After Launch
Optimization is not finished at publish. After your Framer site goes live, audit it on the production URL to confirm the real-world numbers match your expectations.
- Run a speed test. Use a tool that reports Core Web Vitals on the live URL, not a local preview, so you measure actual CDN delivery.
- Identify the largest payloads. Most tools list the heaviest resources. If images dominate, find the specific offenders and resize their source files.
- Check the LCP element. Confirm your hero image is the LCP element and that it renders quickly. If a different, slower element is your LCP, investigate why.
- Test on a real phone over mobile data. Lab scores are useful, but a real device on a cellular connection tells you how visitors actually experience the site.
- Re-test after content updates. Adding a heavy image to a busy page can quietly erode your scores, so re-audit periodically, especially after publishing new content.
This habit keeps performance from drifting over time. A site that launches fast can slowly get heavier as new images pile on, so periodic checks protect the speed you worked for.
How Framer Websites Approaches Image Performance
At Framer Websites, image optimization is built into our design process rather than bolted on at the end. We size hero images for fast LCP, use SVG and Lottie wherever they replace heavy assets, and test every page on real devices before launch. Because Framer handles the delivery pipeline, we can focus on the creative decisions that make a site both fast and beautiful.
If you want a site that loads quickly and ranks well without you managing a single image setting, our team builds it for you. See examples on our work page and get in touch when you are ready to start.
Frequently Asked Questions
Does Framer compress images automatically?
Yes. Framer automatically compresses uploaded images, converts them to modern formats like WebP when supported, generates responsive sizes, and serves them from a global CDN. You provide a good source file, and Framer handles the optimization and delivery for each visitor’s device.
What image format should I upload to Framer?
Upload photographs as JPG, images that need transparency as PNG, and logos or icons as SVG. You do not need to create WebP files yourself, because Framer converts raster uploads to optimized delivery formats automatically based on the visitor’s browser support.
How do I improve LCP on a Framer site?
Keep your hero image sized appropriately for the viewport and make sure it loads eagerly rather than being lazy-loaded, since it is usually your Largest Contentful Paint element. Avoid stacking several large images above the fold, and rely on Framer’s responsive delivery for everything below it.