Visual A/B testing
Compare two versions side by side, then use pixel Diff on same-size captures to find the changes. Before and after, staging and production, expected and actual.
Explore A/B comparisonAll-in-one browser extension for screenshots & testing.
Capture screenshots, compare A/B versions, and test responsive layouts, localization, and accessibility in your browser.
Privacy-first. Free. No account needed.
Five ways to test. One free extension.
Compare versions, review layouts and languages, check accessibility, and refine your UI. All five tools are included for free.
Localization testing
Review a page in different browser locales. Catch text that wraps, labels that overflow, and locale-specific formatting that changes the layout.
Explore language simulationResponsive testing
Capture phone and tablet viewport presets, then compare them with your desktop view. Bring different layouts together in a single Multi review.
Explore responsive captureAccessibility testing
Run built-in axe checks alongside a capture. Keep actionable findings with the screenshot so your team can see the issue and understand what needs attention.
Explore accessibility checksUI testing
Review components, spacing, alignment, and visual regressions. Mark the exact issue with arrows, rectangles, pen strokes, and text, then export a clear visual handoff.
Explore visual review and annotationFrom capture to clear feedback.
Capture
Grab the viewport, the full page, or a selected area. Keep the original pixels, not a resized copy.
Compare
Capture A, switch tabs, capture B. Review side by side or use pixel Diff for compatible sizes. Multi groups 2–5 images.
Annotate
Add arrows, rectangles, pen marks, and text directly to each image. Your annotations save locally.
Export
Download an annotated PNG, JPEG, or WebP at full quality. Comparisons export as one image, without resizing originals.
All the tools. Two simple plans.
One extension for screenshots, testing, and clear visual feedback. Choose the plan that fits your workflow.
Free
$0no subscription
Local visual review, with a monthly workflow allowance and browser-specific limits.
- 20 completed workflows per month
- All five tools on Chrome; limited features on Firefox
- Full-quality capture, annotation, and export
- SnapDiff watermark and capture timestamps
- No account or payment details needed
Install from your browser's official extension store.
Pro
$9.99USD / year
For regular reviews and exports without SnapDiff branding.
Plus applicable taxes. Billed annually.
- Every testing tool in Free
- Unlimited completed workflows
- No SnapDiff branding
- Optional custom watermark name
- Show or hide capture timestamps
- Up to 3 browser installations
Get SnapDiff Pro (opens in a new tab)
Hosted checkout by Dodo Payments. Activate your license key inside the extension.
All five testing tools, annotations, and full-quality exports. Features are available based on browser compatibility.
Less explaining. More showing.
Capture, compare, and share clear visual feedback. Get started with SnapDiff.