How to make a before and after comparison of your game mods

Screenshots are the worst way to show off a mod. A single frame cannot capture the difference your work makes, and two screenshots side by side make people look back and forth and guess. What actually sells a mod is letting someone drag a slider across the exact same scene, vanilla then modded, lights off then on, and see the change for themselves.

This guide shows how to make that comparison in about a minute and share it anywhere, using imgi, a free before/after tool with no signup.

Why a slider beats screenshots

A draggable before/after keeps both images pinned to the same scene, so the only thing that changes is your mod. It is interactive, so people spend time with it instead of scrolling past. And because the two frames are locked to the same view, it reads as honest: no cropping, no cherry-picked angle, just the real difference.

Take two good frames first

The comparison is only as good as the two shots. A few rules:

• Same camera position and angle. Use a fixed camera or the console freecam if the game has one, and do not move between shots.
• Same time of day and weather. Lock the in-game clock if you can.
• Hide the HUD so nothing distracts from the scene.
• Same resolution and aspect ratio for both images.
• Name them clearly, like “vanilla” and “modded” or “lights off” and “lights on”.

Make the comparison

1. Open the imgi home page and drop in your two frames.
2. Drag the slider to check the alignment. Move the labels to mark which side is which.
3. Click Publish for a permanent link, or keep it private while you test.
4. Copy the embed snippet if you want it on your own mod page or wiki.

Here is what the result looks like. Drag it:

Share it where modders actually are

A live slider is great on a page that allows embeds, but a lot of modding lives in places that do not: Nexus descriptions, Reddit threads, Discord. That is where imgi’s animated export helps. Export the comparison as a GIF or MP4 and it plays inline anywhere:

• Nexus mod page: embed the live comparison in your description, and drop the same link in a pinned comment.
• Reddit and Discord: post the GIF or MP4 so it plays without a click.
• Your own mod site or wiki: paste the iframe embed.

Keep a set for your mod

If your mod changes several areas, make one comparison per scene. imgi supports up to 10 images in a single comparison, so you can let people flip through pairs. A small gallery of before/afters on your mod page does more for downloads than any wall of text.

That is the whole workflow. Two frames, one slider, one link, and your mod’s difference speaks for itself.