imgsli is down. Here’s a free before and after image slider
So you went looking for imgsli and landed here instead. Heads up before you keep hunting: imgsli.com is parked on an under construction page right now, so the little slider a lot of us leaned on for years just won’t load. Might come back, might not. Nobody really seems to know. But here’s the part that actually mattered, two images stacked in the exact same spot with a divider you drag between them. That’s the whole reason imgi exists, and you do not need an account to try it.
This is the whole idea
Two images in the exact same spot, one divider moving between them. That is what imgsli did, and it is what imgi does. Open it and you drag the slider yourself, on your own images.
imgi is an imgsli alternative
imgi is a small, fast web tool for comparing two images side by side. Drop in a before and an after, drag the divider across the middle, and you can see exactly what changed. Both images stay pinned in the same place, so the only thing moving is the difference itself, whether that is a sharper texture or a color that shifted a hair. Two screenshots parked next to each other never quite show that. A slider does.
And since the fine detail is usually the entire point of a before and after, imgi will not quietly crush it. Turn on Max quality, available to everyone, and your original files go up and come back with zero compression, pixel for pixel. That is the difference that matters when you are judging an upscale or a retouch: what you compare is the real image, not a squished copy of it.
You get a short link you can hand to anyone, and it keeps working. That part matters here of all places: imgi’s links are permanent, so a comparison you post today is still live next year. And if the images should never leave your machine, offline mode runs the whole thing in your browser with nothing uploaded. We also wrote up the switch in more detail over on the imgsli alternative guide.
What imgi offers
- No forced compression. Keep every pixel with Max quality, so you are comparing the real files. Or go fully offline, where nothing is uploaded or recompressed at all.
- Drag to compare. Move the slider horizontally or vertically. Mouse, touch, and keyboard all work.
- Permanent shareable links. Every comparison gets a short URL you can send to a client or paste into a forum, and it keeps working.
- Embed anywhere. Drop a live comparison straight into your own site or blog, sized to your image.
- Compare up to ten images. Load a set and switch which pair is shown, handy for versions and passes.
- Animated exports. Turn any comparison into a GIF, MP4, or WebP for Reddit, Discord, and anywhere that won’t embed a live slider.
- Offline mode. Compare two files entirely in your browser, with no upload and no recompression, for when the images should never leave your device.
- Private links with Pro. Keep a comparison to yourself, drop the export watermark, and go ad free.
How to compare two images with imgi
- Open the imgi home page and drop in your before and after images.
- Drag the slider to compare, and label each side so viewers know which is which.
- Click Publish for a permanent link, or Offline to compare without uploading.
- Copy the embed snippet if you want the slider on your own site.
That is it. Ten seconds if your two images are ready to go.
Who actually uses a before and after slider
If you searched for imgsli, you probably already know why you want one. Retouchers use it to show a client the edit against the untouched shot, because a slider makes the work obvious in a way a flat before/after JPEG never does. Game modders lean on it hard, which is exactly why Nexus, Reddit, and Discord filled up with imgsli links over the years, a mod next to vanilla with one drag. And lately it is the AI upscaling folks: load your upscale against the source and you can tell in about two seconds whether it actually added detail or just softened everything. Same tool, same idea, whether you are shipping a retouch, a render, or a texture pack.
Questions about imgsli and imgi
Is imgsli down for good?
Hard to say. Right now imgsli.com just shows an under construction page, so it is not usable, and whether it comes back is anyone's guess. The thing it did well though, drag to compare two images, is exactly what imgi does, so you are not stuck waiting on it.
Is imgi free?
Yes. Comparing, sharing a permanent link, embedding, and exporting a GIF are all free, and you do not need to sign up to do any of it.
Does imgi compress my images?
Only if you let it. Out of the box it uses light, visually lossless compression so pages load quickly, but turn on Max quality and your original file stays untouched with zero compression. Offline mode never uploads or recompresses anything either.
Is imgi basically imgsli?
It does the same core job: upload a before and an after, drag a divider to reveal one over the other, then share the result on a short link. imgi also handles up to ten images at once, exports animations, and can run fully offline.
Do I need an account?
Nope. You can compare and share without one. A free account only unlocks folders, and Pro adds private links and a couple of extras on top.