Free·No account needed·Ready in seconds·No compression
Compare two images with a before and after slider
How it works
A before and an after. Drag them in or click to browse, up to ten in one comparison.
Both images lock into the same spot, so the only thing that moves is what your edit changed.
Publish for a permanent link anyone can open, or embed it on your own site.
What is imgi?
imgi is a free before and after image slider for comparing two images side by side. Drop in a before and an after, drag the slider across the difference, and see exactly what changed: game mods and texture packs against vanilla, AI upscales and DLSS presets against their sources, photo edits against originals, renders, and compression tests.
Why use a slider
Side by side screenshots hide small differences. A comparison slider puts both images in exactly the same place, so texture, sharpness, banding, and color shifts become obvious the moment you drag. When the difference matters, this is the fastest way to show it.
Every comparison becomes a permanent short link you can share with anyone. No account is needed, viewers get the same interactive image slider with no app or signup, and you can embed it on your own site. Links stay yours: rename them, flip them private, or delete them whenever you want. Two files, one drag, one link to share.
What you can do
One link, and everyone gets the same before and after
Publish a comparison and you get a permanent URL. Anyone you send it to drags the same handle you did, straight in their browser. Nothing to install, no account to make, and the link keeps working.
Compare offline, with nothing uploaded
Offline mode runs inside your own browser. Neither file leaves your machine and neither one gets re-encoded, so every difference on screen is one you made and not one our compression added. Handy when the work isn't yours to hand to a server.
Built for mods, upscales and GPU settings
Texture packs. ReShade presets. An AI upscaler you're not sure is doing anything. DLSS against native. Both frames sit in exactly the same place, so the handle is the only thing that moves.
Embed the slider on your own site
One iframe puts a live comparison inside your blog, your docs or your mod page. People drag it there, on your page, without being sent somewhere else first.
Ten images, one comparison
A comparison holds up to ten images, so you can drop in a full round of test renders instead of picking two in advance. Viewers swap any pair into the slider themselves.
Labels stay on the comparison
Name the two sides once, say Native 4K and Performance mode, and those names show up for everyone who opens the link.
Private links
Pro lets you mark an upload private, and then the link opens for you and no one else. Useful for work that isn't ready to be found yet.
An EXIF metadata reader
Another tool on the same site: read the camera, lens, dates and GPS out of a photo, or strip all of it out without touching the pixels. It runs in your browser.
An imgsli alternative
Same idea, and nothing to migrate: drop two files in, publish, paste the link. All of the above is free apart from private links and an ad-free viewer.
Pricing
Free
$0 forever
- Unlimited uploads, no daily limits
- Unlimited public comparisons
- Permanent share links and embeds
- Up to 10 images per comparison
- Unlimited metadata reads
- No account needed
Pro
$3.99 / month
or $34.99 / year (save 27%)
- Everything in Free
- Private uploads: links only you can open
- Ad-free viewer pages on everything you share
- 50 MB uploads per image (free: 20 MB)
- Custom links: imgi.co/a/your-mod-name instead of random characters
- Folders, just for organizing your uploads
- Batch metadata cleaning, clean up to 20 files at once
Payments handled by Paddle. Cancel anytime from your account.
More free image tools
Frequently asked questions
Is imgi free?
Yes. Uploading, comparing, sharing a permanent link, and embedding are all free with no signup.
What image formats can I compare?
PNG, JPG, WebP, and GIF. For the sharpest before/after, use two images of the same dimensions.
Do my images stay online forever?
Shared links are permanent while the tool is running. You can delete any upload at any time, and you can mark an upload private so only you can open it.
Can I embed a comparison on my own site?
Yes. Every comparison has an embed snippet that drops the slider straight into your page, sized to your image.
Does imgi compress my images?
No, not unless you ask it to. By default the file you upload is the file viewers get, byte for byte, with zero recompression. If you want smaller, faster-loading files you can turn on Compress when uploading. Offline mode never uploads anything at all, so nothing is touched there either.
How do I compare two images with the slider?
Open imgi, drop in a before and an after, and drag the image slider across the middle. Both images stay locked in the same place, so the only thing that changes is what your edit did. Add labels to mark each side, then publish for a shareable link.
Can I compare AI upscales, game mods, or photo edits?
Yes. imgi is built for this: put an AI upscale next to its source, a game mod next to vanilla, or a retouched photo next to the original, and the before and after slider makes the difference obvious. High resolution images stay pixel aligned, so fine detail is easy to judge.
What else can imgi do with an image?
The metadata tool reads the camera, lens, dates and GPS out of a photo, or strips them out entirely without touching the pixels. It runs in your browser.
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