Drop or Paste Image A
Click to browse file, drag & drop PNG/JPG/WebP, or press Ctrl + V to paste from clipboard.
Drop or Paste Image B
Click to browse file, drag & drop PNG/JPG/WebP, or press Ctrl + V to paste from clipboard.
Need this comparison board locked floating above your software?
FloatBoard desktop app hovers this exact dual comparison board always-on-top above Blender, Photoshop, Premiere, and your code editor with zero window-switching. Works 100% offline with global hotkeys.
Zero-Upload Privacy Guarantee
Unlike online file converters that upload your confidential UI mockups, client NDAs, or proprietary 3D renders to remote cloud servers, FloatBoard processes every byte locally in your browser memory.
60 FPS Hardware Acceleration
Smooth split-screen dragging and pixel diff comparison powered by your GPU via HTML5 Canvas. Inspect 4K render passes, RAW photo adjustments, and SVG exports with zero lag.
Direct Clipboard Ingestion
Copy any screenshot with Win+Shift+S (or Cmd+Shift+4) and press Ctrl+V directly on the stage. No temporary files in your Downloads folder and no file dialog clicks needed.
Frequently Asked Questions
How does the online image comparison tool work?
The tool uses modern browser APIs (FileReader and HTML5 Canvas) to render two images in parallel memory. You can toggle between side-by-side view, draggable before/after slider, and difference overlay without sending data over the network.
Is there any file size limit for image comparison?
Because processing happens locally in your device RAM, you can compare large 4K and 8K PNG, JPG, or WebP images up to your system memory capacity without upload timeouts.
How do I compare vehicle blueprints or 3D renders?
Load your front orthographic view in Slot A and your side orthographic view in Slot B. You can inspect alignment, silhouette proportions, and edge loop curvature side by side. For Blender workflows, the desktop app pins this board directly over your 3D Viewport.
Can I run this comparison board offline on my computer?
Yes. The standalone FloatBoard desktop app runs natively on Windows 11/10, macOS, and Linux without internet access. It pins reference boards always-on-top above any application.