Compare Photos

Why Compare Photos?

Sometimes you need to see two images next to each other before you can really tell what changed. Maybe you edited a photo and you want to check whether the colour grading actually improved. Maybe you took a portrait twice and you are trying to decide which expression looks better. Or maybe you just want to see how far your editing skills have come since last year.

Whatever the reason, comparing photos side by side is one of those simple things that turns out to be surprisingly useful once you actually do it. The problem is that most people end up opening two tabs, or placing two windows next to each other, or squinting at thumbnails in a file browser. None of that works particularly well.

That is what this tool is for. Upload your two images, and the interactive slider lets you reveal one over the other in real time. No accounts, no installs, no nonsense. Just drag, drop, and compare.

How It Works

The tool could not be simpler. You upload two images — one for the left side, one for the right — and the slider lets you sweep between them. You can drag and drop files from your desktop, pick them from your phone's camera roll, or paste a URL if the image is already hosted somewhere online.

There are two viewing modes. Reveal mode lets you pull a curtain across the image, uncovering one photo as it covers the other. Slide mode places both images side by side and moves the divider between them. Both modes work on any screen size, including phones and tablets.

You can also switch between Contain (which shows the full image with no cropping) and Cover (which fills the frame and crops to fit). Contain is better when the two images have different aspect ratios. Cover is better when you want the comparison to feel seamless.

When Comparing Photos Is Actually Useful

Photo editing is probably the most obvious use case. If you are learning Lightroom, Photoshop, or any other editor, comparing the before and after versions of your edit is the fastest way to see whether you are actually making things better or just pushing sliders around. Professionals do this constantly. The difference between a good edit and a great edit is often only visible when you see them side by side.

Retouching and restoration is another big one. If you are cleaning up an old family photo — removing scratches, fixing faded colour, sharpening faces — comparing the original to the restored version helps you decide when you have gone far enough. Over-editing is a real risk, and a side-by-side comparison keeps you honest.

AI-generated artwork is where things get really interesting. Services like Drawing Joy can take an ordinary photo and turn it into a pencil sketch, oil painting, watercolor, or charcoal portrait. Comparing the original photo to the AI-generated artwork lets you see the transformation in a way that's immediate and satisfying. It is also the best way to share the result — the before-and-after tells the whole story at a glance.

Designers and developers use photo comparison tools too. Checking two versions of a mockup, comparing a screenshot to a design file, or verifying that a CSS change did not break a layout — all of these benefit from a pixel-level comparison. Some people even use it for website A/B testing screenshots.

And then there are the everyday moments. Comparing two apartment listings. Checking whether the shirt you ordered actually matches the product photo. Seeing how much your puppy grew in six months. These are not professional use cases, but they are the ones people remember.

Tips for Getting the Most Out of Photo Comparison

Use images with similar dimensions if you can. The comparison is most effective when both photos are the same size and aspect ratio, because the slider lines up perfectly. If the images are different sizes, switch to Contain mode so you can see both in full without cropping.

Pay attention to alignment. If you are comparing two versions of the same scene (like before and after editing), try to make sure the framing is identical. Even a small shift in camera position can make the comparison confusing because your eye tracks the movement rather than the actual changes.

Take your time with the slider. The instinct is to sweep back and forth quickly, but the details show up when you move slowly. Inch the slider across a face, a sky, a texture. That is where the real differences reveal themselves.

Beyond Comparison: Turn Your Photos Into Art

If comparing photos has you thinking about what else you can do with your images, you might want to try turning them into actual artwork. Drawing Joy uses AI to transform ordinary photos into 4K print-ready drawings — pencil sketches, oil paintings, watercolors, charcoal portraits, and more. The output is high enough resolution to print at poster size and frame on your wall.

It is the kind of thing that makes a great gift, too. Upload a couple photo, a pet photo, or a family portrait, and in a few minutes you have a piece of art that looks like it was hand-drawn by a professional artist. And you can use this very comparison tool to see the original photo next to the finished drawing.