Image Comparison
Compare two images side by side or with a draggable slider.
Processed entirely in your browser. Your image is never uploaded to a server.
- Draggable slider or side-by-side view.
- Shows both file names and sizes.
- No processing — just an honest visual comparison.
- Runs in your browser.
Why this is private
- Processed entirely in your browser. Your image is never uploaded to a server.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Load two images and compare them with a draggable before/after slider or side by side. Useful for judging compression, edits, or two design variations.
How to use it
- 1Add Image A and Image B.
- 2Drag the slider, or switch to side-by-side.
- 3Judge the difference.
Frequently asked questions
What people use it for
Judge compression qualitySlide between the original and a compressed version to see whether the size saving is worth any visible loss.
Review an edit or retouchCompare before and after a colour, filter or sharpening pass at full size.
Weigh two design variationsPut two mockups or exports side by side to decide between them.
Related guides
- How to resize a photo and signature for online formsApplication portals want the photo and signature at exact pixel sizes and tiny file sizes. Here's how to hit both without an app.
- How to compress images for the web without them looking badWhy images make pages slow, how much quality you can drop before anyone notices, and a repeatable way to hit a size target.
- How to resize an image without losing qualityWhat 'without losing quality' really means when you resize, why enlarging is different from shrinking, and how to keep proportions intact.
- JPG, PNG or WebP: which image format should you use?A practical guide to picking an image format — what each one is good and bad at, and when to convert.
Related tools
All image toolsCompress ImageReduce image file size while controlling quality — one image or a whole batch.Image FiltersApply photo filters — vintage, warm, cool, fade and more — with adjustable intensity.Resize ImageResize images to exact pixel dimensions or a percentage — one image or a whole batch.Image Metadata ViewerSee an image's dimensions, format, EXIF, camera info and GPS location.
Ready to use Image Comparison?
Image Comparison