Tech & Digital Art 60 FPS Hardware Accelerated
UI Visual Regression & Pixel Diff Slider
Compare Figma mockups against deployed production DOM, or verify frontend CSS refactors with automated pixel difference heatmaps and synchronized zooming.
Embed This Interactive Slider on Your Site
Works with WordPress, Webflow, Shopify, Squarespace, Ghost, Notion, and HTML websites.
<iframe src="https://diffslider.app/embed/demo-visual-regression-testing" width="100%" height="600" frameborder="0" allowfullscreen loading="lazy" style="border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; overflow: hidden; max-width: 100%;"></iframe>
Customizing your embed:
-
?theme=light– Force clean white background -
?toolbar=0– Ultra-clean minimalist mode (slider only) -
?pos=65– Set default divider split position to 65% -
?mode=side– Default to side-by-side mode
Make Your Own
Create Your Own Before & After Comparison
Drag & drop 2 to 10 photos. No software to install, no watermark, 60 FPS mobile-ready.
- ✓ Free & no credit card required
- ✓ Up to 1600% synchronized pixel zoom
- ✓ Instant permanent link & embed snippet
Photography & Alignment Protocol
- Use the Toggle mode to flip back and forth at 60 FPS to detect font antialiasing differences.
- Paste the comparison URL directly into GitHub Pull Request review descriptions.
- Switch between horizontal and vertical sliders to audit responsive mobile viewports.
Frequently Asked Questions
Can I zoom into individual CSS icons and borders? ▼
Yes, our engine supports smooth continuous zoom up to 1600% with locked coordinates.