How image compare works
Upload two PNG, JPEG, or WebP images. Slider mode peels one version over the other, side-by-side mode lines them up, and blend mode overlays both so mismatched pixels stand out. Zoom and swap help you inspect tight UI details without leaving the page.
Need a different format? You can also compare PDF files or compare text without leaving compare-text.online.
Why teams use this tool
- Slider, side-by-side, and blend comparison modes
- Zoom controls for pixel-level inspection
- Swap original and modified in one click
- Works with screenshots and design exports
- No account required
How to use this tool
- 1
Upload both images
Use matching resolutions when possible for the cleanest visual diff.
- 2
Choose slider, side-by-side, or blend
Slider is best for spotting shifts; blend highlights mismatched pixels quickly.
- 3
Zoom into regressions
Inspect padding, type, and color issues that automated screenshot tests flagged.
Visual QA and screenshot review
Designers and QA engineers compare images online to verify Figma exports, Storybook stills, and production captures. Pair this page with your test runner: automation catches failures, image compare explains them to humans.
Common compare images online use cases
UI and design QA
Compare Figma exports or Storybook screenshots against production to catch padding, type, and color regressions.
Visual regression after deploys
Diff before/after captures from Playwright or manual QA when you need a fast human review.
Marketing creative review
Review banner or landing-page image variants before they go live.
Compare Images Online FAQ
- How do I compare images online?
- Upload the original and modified images, then choose slider, side-by-side, or blend. Drag the slider to reveal differences along the X axis.
- What image formats are supported?
- Any format the browser can decode, typically PNG, JPEG, GIF, and WebP. For best results, compare images at the same resolution.
- Can I use this as a visual regression tool?
- Yes for spot checks. Pair it with your test runner for automation; this page is the fast human review surface when a screenshot test fails.
- Are uploaded images stored?
- Images stay in memory as data URLs for the session and are not uploaded for the comparison itself.
Related comparison tools
Compare Text is a free online diff studio on compare-text.online. Jump to another comparer without leaving the site.