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Compare Images

Put two images side by side. Slide, fade, blink or diff. Free, in your browser.

A
Image A
B
Image B
Drop both at once or one after the other, or browse your files. Any format, full resolution.

How to compare two images

1
Drop both images
A and B fill the frame. Swap either one for another version any time.
2
Pick how to look
Side by side to judge, slider or fade to inspect, blink to spot, diff to prove.
3
Save the answer
Export a still, or record the comparison as MP4 or GIF.
What you get inside

A compare frame you can work in, not a report you read

Both images open in the frame together. Switch how you look at them, swap in other versions, and record the comparison as a video.

Side by side
Slider
Fade
Blink
Diff
REC
A
B
The frame holds both
Zoom in to 100% and past it; both sides stay in the one frame.
Five ways to look
Side by side, slider, fade, blink, diff. One click between them, same view.
Record the comparison
Turn the wipe or the blink into an MP4 or GIF you can post.
The blink test
Flip between the two and your eye catches what a slider hides.
More than a pair
Swap A or B for any other version, as many times as you like.
MP4 and GIF out
A comparison that moves travels better than a screenshot.

What each mode is for

Five questions, five ways of asking. The blink is the one nobody else has.

Side by side
Composition
For choosing between two takes. Whole frames, nothing hidden.
Slider
Retouch
For edits in one region. Wipe across the seam and watch it change.
Fade
Overall look
For grades and colour. One dissolves into the other, so the whole frame shifts at once.
blink 2/s
Blink
Small changes
The two swap in place. Anything that moves, your eye jumps to. It is how astronomers find planets.
[IMAGE 16:10: a difference map of two UI screenshots, flat where they match]
Diff
Pixels
Only what differs lights up. For proving a change, not judging it.

What happens to your pixels

It stays in your browser
The comparison runs on your machine. Nothing is uploaded, ever.
Any format
JPG, PNG, WEBP, GIF. Two different formats compare fine.
Full resolution
Zoom to 100% and past it. Nothing is downscaled to fit the frame.

What people compare

AI generations
Two attempts of the same prompt, side by side.
Blink
Photo edits
Your grade next to the original file.
Slider
UI screenshots
Before and after a build, down to the pixel.
Diff
Upscales
Where the model invented detail and where it held.
Slider
Compression levels
How far you can push quality before it shows.
Blink
Product photos
Which shot sells it. Whole frames, no wipe.
Side by side

More in Compix

Crop image
Crop to any size, straighten, resize.
Image splitter
Split a photo into a grid or a poster over pages.
Animate
Turn the comparison into motion.

Questions

How do I compare two photos for differences?+
Drop both. Blink is the fastest read. The two swap in place and anything that changed flickers. For a pixel-level answer, switch to diff.
Is there a before / after slider?+
Yes. Slider mode puts a wipe between the two images; drag it, or record the wipe as a video.
Can I compare more than two images?+
Two at a time in the frame — and you can swap A or B for any other version as often as you like, so a whole set is a few clicks.
Does it work on a phone?+
Yes. Drop or pick two photos from the camera roll and all five modes work in a mobile browser.
Can I compare AI-generated images?+
That is the most common use. Blink between your reference and each generation. Small errors in hands, text and eyes show up immediately.
Do you give an SSIM or PSNR score?+
No. We do the visual comparison; we do not produce similarity scores or PDF reports.
Are my images uploaded?+
No. Everything runs in your browser; nothing is sent anywhere. Signing in only saves the design to your account.
Drop two images and you're inside
No account needed to compare, record and download. Sign in when you want to keep it.
Drop image A and image B
or browse your files
Crop image Compare images Image splitter Templates Privacy
Nothing leaves your browser.