HTML to Video Converter
Convert HTML/CSS animations to MP4 video. Perfect for social media content, animated ads, and marketing materials.
How it works
Server-side rendering captures CSS animations frame by frame and encodes to H.264 MP4.
HTML Input
Preview
Paste HTML with CSS animations and click Convert
Outputs H.264 MP4 video
CSS Animation Capture
Frame-by-frame capture of CSS transitions and keyframe animations.
Up to 4K Resolution
Export videos up to 3840x2160 for crisp, high-quality output.
Configurable FPS
Choose from 15 to 60 FPS for smooth playback.
H.264 MP4 Output
Universal format compatible with all devices and platforms.
When to Use HTML to Video Conversion
Perfect For:
- ✓Creating animated social media content from HTML/CSS
- ✓Converting CSS animations to video for Instagram Reels
- ✓Exporting animated banners and ads as video
- ✓Recording animated data visualizations
- ✓Creating looping background videos from web animations
Supported Animation Types:
CSS Keyframe Animations
@keyframes with transform, opacity, color transitions
CSS Transitions
Smooth property changes with timing functions
SVG Animations
Animated SVG graphics and path drawings
How HTML Becomes Video
Browsers render CSS animations live, but there is no built-in "export to video" button. This tool bridges that gap on the server. When you click convert, your HTML and CSS are sent to a headless Chrome instance that loads the markup at your chosen resolution. The renderer then steps through the animation's timeline and captures a screenshot at each frame — if you pick 3 seconds at 30 fps, that is 90 individual frames. FFmpeg stitches those frames together and encodes them as an H.264 MP4, the codec supported natively by virtually every phone, browser, and social platform. Because this all happens on our servers rather than in your browser, complex layouts, web fonts, and gradients render exactly as Chrome would show them.
Frame rate is the main quality-versus-size dial. You can choose between 15 and 60 fps: 30 fps is the standard for smooth social content, while 60 fps suits fast motion and 15–24 fps keeps files small for simple loops. Clips can run from 1 to 15 seconds, and resolution presets cover 1080p and 720p landscape, 1080×1080 square, and 1080×1920 vertical for Instagram Stories, Reels, and TikTok. Higher resolutions and frame rates mean more frames to capture and encode, so a 1080p clip at 60 fps takes noticeably longer than a 720p clip at 30 fps.
Getting Clean, Loopable Results
The capture starts when the page loads, so set your CSS animations to begin immediately rather than after a delay, or the first frames will be blank. To make a video that loops seamlessly, design the animation so its end state matches its start state — keyframes that return to 0% at 100% are ideal, and set the clip duration to a whole multiple of the animation's cycle length. Inline your styles or include them in a <style> block within the pasted HTML, since external stylesheets and fonts hosted elsewhere may not load in time to be captured. Pick a background color that matches your design so there are no unexpected borders in the final frame.
Frequently Asked Questions
Does this record my CSS animations or just take one screenshot?
It records the full animation. A headless Chrome browser loads your HTML and captures a screenshot at every frame across the timeline you set, then FFmpeg encodes those frames into an H.264 MP4. A 3-second clip at 30 fps produces 90 captured frames of continuous motion.
What frame rates and durations can I use?
You can set the frame rate anywhere from 15 to 60 fps and the duration from 1 to 15 seconds. 30 fps is the standard choice for smooth social content; use 60 fps for fast motion and 15-24 fps to keep files small for simple loops.
My animation starts partway through the video. How do I fix it?
Capture begins the moment the page loads, so remove any animation-delay or start the animation at once. For a seamless loop, make the animation end where it begins and set the clip length to a whole multiple of the animation cycle.
Why did my external fonts or images not appear?
Assets loaded from other servers may not arrive in time to be captured. Inline your CSS in a style block within the pasted HTML, and embed critical images as data URIs where possible, so everything is available the instant the page renders.
Is the video processed in my browser or on a server?
On a server. The rendering and encoding require a real Chrome instance and FFmpeg, so your HTML is sent to our backend for conversion and the finished MP4 is returned for download. It is not generated client-side.
What can I use the exported MP4 for?
H.264 MP4 plays natively on essentially every device and platform, so it works for Instagram Reels and Stories, TikTok, animated ads and banners, presentation clips, looping background videos, and recorded data visualizations.
Guides & Tutorials
Step-by-step walkthroughs with copy-paste examples for common conversions:
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