Image A (Original)
Drag & drop or click to upload
PNG, JPEG, GIF, WEBP, SVG
Image B (Modified)
Drag & drop or click to upload
PNG, JPEG, GIF, WEBP, SVG
Drag & drop or click to upload
PNG, JPEG, GIF, WEBP, SVG
Drag & drop or click to upload
PNG, JPEG, GIF, WEBP, SVG
Upload two images and instantly spot differences with an interactive slider, side-by-side layout, or pixel-level difference overlay. Free, private, and 100% in your browser.
Whether you are verifying font adjustments or comparing satellite imagery, select the perfect inspection mode for your files.
Place both images next to each other at the same zoom level for a direct visual comparison. Perfect for spotting layout shifts, color differences, or design changes at a glance. Pan and zoom both images in sync.
Drag the divider left and right to reveal either image beneath. The before-and-after slider is ideal for photo retouching reviews, UI redesigns, and demonstrating changes to clients. Works on desktop and mobile.
See exactly what changed — pixel by pixel. The difference overlay highlights every modified region, making it easy to catch subtle color shifts, missing elements, or compression artifacts that the naked eye would miss.
Instantly inspect differences without uploading any files to external cloud servers.
Click "Upload" or drag and drop your first and second image into the comparison tool. Supports PNG, JPG, WebP, GIF, BMP, and SVG. Both images stay in your browser — nothing is sent to any server.
Switch between Side by Side, Slider, or Difference Overlay with a single click. Toggle freely between modes to inspect changes from multiple angles.
Zoom, pan, and examine the differences in detail. Download the difference overlay as an image or copy a shareable link to your comparison session.
Visual inspection is vital across numerous professions. From visual design specs to clinical scans, let's see how professionals utilize this tool.
Compare design mockups vs. implemented screens to ensure pixel-perfect accuracy. Catch alignment issues, font rendering differences, and color inconsistencies before shipping.
Review retouching sessions side by side. Compare RAW vs. edited, before vs. after color grading, or check that noise reduction hasn't blurred important details.
Visual regression testing made easy. Compare screenshots from two app versions to spot unintended UI regressions without running a full automated test suite.
Review banner ads, social media assets, or landing page variants. Compare A/B test creatives and ensure strict brand consistency across all deliverables.
Check proofs against approved vector and raster artwork. Identify any color drift, bleed differences, or layout shifts before sending files to final print.
Compare microscopy images, satellite photos, or medical scans. The difference overlay makes even the subtlest changes visible in clinical or field research workflows.
Our image compare tool supports all major raster and vector image formats, so you can compare files exactly as they come out of your camera, design tool, or browser:
Privacy matters — especially when comparing sensitive design files, proprietary screenshots, or confidential photos. Our image comparison tool runs entirely client-side using Javascript. That means:
See how our lightweight browser-based utility stands against heavy desktop software and cloudy web services.
| Feature | OnlineCodeFormatter | Desktop Software | Other Online Tools |
|---|---|---|---|
| Free to use | ✅ Always free | ❌ Often paid | ⚠️ Freemium |
| No upload to server | ✅ 100% client-side | ✅ Local | ❌ Uploads to cloud |
| Side by side view | ✅ Yes | ✅ Yes | ⚠️ Limited |
| Slider / swipe mode | ✅ Yes | ⚠️ Rarely | ⚠️ Some |
| Pixel diff overlay | ✅ Yes | ✅ Yes | ⚠️ Limited |
| No install required | ✅ Yes | ❌ No | ✅ Yes |
| Mobile-friendly | ✅ Yes | ❌ No | ⚠️ Sometimes |
| Works offline | ✅ Yes (after load) | ✅ Yes | ❌ No |
Have questions about browser image comparing, resolutions, formats or privacy? We have answers.
Scroll up to upload your original and modified files. Toggle between the swipe slider, side-by-side display, and pixel diff views directly in your browser.