Modes
Six ways to see changes
Side by side with synced zoom, slider (vertical or horizontal), fade, blink, pixel difference and red highlights.
Image Compare Online · Image Diff Checker
Spot every pixel that changed.
Drop or paste two images — screenshots, designs or photos. Slide, fade, blink or highlight to see exactly what's different.
Original image
Changed image
Tip: paste a screenshot with ⌘V / Ctrl+V — it fills the next empty side.
Results appear here.
Add two images to compare them
Screenshots, designs, photos or exports — see every changed pixel. Images never leave your device.
How It Works
Three steps. No sign-up.
- 1
Drop, choose or paste (⌘V / Ctrl+V) two images — screenshots, designs, photos or exports in any common format.
- 2
Press Compare Images. Pixels are compared in your browser; small offsets are auto-aligned and different sizes are matched.
- 3
Switch between Side by Side, Slider, Fade, Blink, Difference and Highlight, jump to each changed region, and download the result.
Features
Built for real-world data.
Regions
Changes outlined for you
Changed areas are boxed and listed — click one to zoom straight to it. No more hunting for a 3-pixel change.
Align
Auto-alignment
Screenshots that shifted by a few pixels are lined up automatically, and different sizes can be scaled or aligned.
Ignore
Ignore areas & noise
Draw boxes over timestamps or ads to skip them, tune sensitivity, and ignore anti-aliasing on text edges.
AI
Describe the changes
Chrome’s on-device AI can describe what changed in words — without uploading either image.
Private
Images stay local
Designs and screenshots are compared in your browser and never uploaded. Works offline once installed.
FAQ
Questions & answers
Which image formats are supported?
PNG, JPG/JPEG, WebP, AVIF, GIF (first frame), BMP, ICO and SVG — anything your browser can display. HEIC and TIFF need to be exported as PNG or JPG first.
Can I compare images of different sizes?
Yes. Choose “Scale to match” (great for 1× vs 2× screenshots), “Align centers” or “Align top-left”. Auto-align also corrects small shifts.
How is the difference calculated?
Each pixel is compared using a perceptual color distance. Use Sensitivity to ignore tiny color shifts like compression noise, and “Ignore anti-aliasing” to skip smoothed edges of text and shapes.
Can I ignore parts of the image?
Yes. Click “Ignore Area” and drag over anything that always changes — timestamps, ads, avatars. Those pixels are excluded from the comparison.
Can I paste screenshots directly?
Yes. Copy a screenshot and press ⌘V or Ctrl+V on the page — it fills the next empty side.
Are my images uploaded?
No. Images are decoded and compared entirely in your browser.
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