The best imgsli alternative in 2026

If you landed here because imgsli stopped working, you are not alone. The original imgsli.com, for years the go to tool for before/after image comparison, now returns a parked “under construction” page. The tool that photographers, retouchers, and designers relied on to show clients their work is gone.

imgi is a free, modern replacement built to do the one thing imgsli did well: put two images under a slider you can drag, then give you a permanent link and an embed you can drop anywhere.

What imgsli did, and what imgi does

imgsli let you upload a “before” and an “after”, drag a divider across them, and share the result. imgi keeps that simple core and adds what a 2026 workflow needs:

• Drag to compare. Upload two images and 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.
• Embeds. Drop a comparison straight into your own site or blog, sized to your image.
• Compare more than two. Load up to ten images and switch which pair is shown.
• Private uploads. Mark a comparison private so only you can open the link.
• Animated exports. Turn a comparison into a GIF for social posts.

No signup is required to start, and the core tool is free.

Comparing AI upscaler and model outputs

A lot of the demand that once went to imgsli is now people comparing AI images: upscaler results, denoise passes, and different model outputs. A before/after slider is the clearest way to show whether an upscale actually added detail or just softened the image. imgi handles high resolution images and keeps both sides pixel aligned, which is exactly what you want when judging fine detail.

How to compare two images with imgi

1. Open the home page and drop in your before and after images.
2. Drag the slider to compare. Add labels to mark which side is which.
3. Click Publish for a permanent link, or Private to keep it to yourself.
4. Copy the embed snippet if you want it on your own site.

That is the whole flow, and it takes about ten seconds.

Is imgi going to disappear like imgsli?

imgsli was a loved free tool that almost certainly died of running costs with no way to pay for them. imgi is built to avoid that fate: it runs cheaply and will earn its keep through optional paid features, so the free core can stay online. The goal is a tool that is still here next year.

If you used imgsli, try imgi now. It is free, fast, and there is nothing to install.