Question 1

What is visual regression testing?

Accepted Answer

Visual regression testing automatically compares screenshots of your website before and after changes. It helps catch unintended visual changes (like broken layouts, missing elements, or style issues) before they reach your users. Unlike manual testing, it's consistent, thorough, and catches issues humans might miss.

Question 2

How do I get started with ScanU?

Accepted Answer

Getting started is simple: 1) Sign up for a free account, 2) Create a project with your website URL, 3) Click "Run Test" to capture your first screenshots. Your first test run becomes the baseline that future runs are compared against. No complex configuration needed.

Question 3

Do I need to install anything?

Accepted Answer

No installation required! ScanU is a fully cloud-based service. Just sign up, add your URL, and start testing. We handle all the browser infrastructure, screenshot capture, and image comparison for you.

Question 4

What kind of websites can I test?

Accepted Answer

You can test any publicly accessible website. For security reasons, localhost and private IP addresses are not supported. Password-protected staging sites will require authentication support (coming soon).

Question 5

Which browsers are supported?

Accepted Answer

We support all three official Playwright browsers on every plan: Chrome (Chromium), Firefox, and Safari (WebKit). These engines cover the vast majority of web users.

Question 6

What devices can I test?

Accepted Answer

We offer up to 98 device presets across four categories: - Mobile: iPhone SE through iPhone 15 Pro Max, Samsung Galaxy S series, Google Pixel - Tablet: iPad lineup, Samsung Galaxy Tab, Microsoft Surface - Laptop: MacBook Air/Pro, Dell XPS, Lenovo ThinkPad - Desktop: HD through 8K resolutions, Ultrawide monitors The number of presets available depends on your plan: Free (10), Pro (35), Pro+ (70), Max (98).

Question 7

How does page discovery work?

Accepted Answer

Enter your website URL and we'll automatically crawl and discover pages on your site. You can then select which pages to include in your test run. Free tier supports up to 100 pages per crawl, with paid tiers supporting 300 to 1000 pages.

Question 8

Where is my data stored?

Accepted Answer

All data is stored in Frankfurt, Germany (EU) on DigitalOcean infrastructure. Screenshots, comparison results, and user data never leave the European Union. We are fully GDPR-compliant.

Question 9

How long are screenshots retained?

Accepted Answer

Screenshot retention depends on your plan: - Free: 3 days - Pro: 15 days - Pro+: 30 days - Max: 90 days After retention expires, screenshots are automatically deleted. You can always re-run tests to capture fresh screenshots.

Question 10

Is my data secure?

Accepted Answer

Yes, security is a core priority: - All data encrypted in transit (HTTPS) and at rest - JWT authentication for all API requests - SSRF protection prevents testing of private networks - Rate limiting prevents abuse - No third-party analytics or tracking

Question 11

Can I export my data?

Accepted Answer

Yes! GDPR gives you the right to your data. You can request a full export of your account data including project settings, test run history, and metadata. Contact us at hello@scanu.eu for data export requests.

Question 12

Can I delete my account?

Accepted Answer

Yes, you can delete your account at any time from the settings page. Account deletion removes all your data including projects, test runs, screenshots, and comparisons. This action is irreversible.

Question 13

What are screenshot credits?

Accepted Answer

One screenshot credit equals one captured screenshot. Credits are calculated as: pages × devices × browsers. For example, testing 5 pages on 2 devices with 2 browsers = 20 credits.

Question 14

Is there a free tier?

Accepted Answer

Yes! Our free tier includes: - 1 project - 500 screenshot credits/month - All 3 browsers - 10 devices - 3-day screenshot retention - Page discovery (up to 100 pages/crawl) - Email support No credit card required to sign up.

Question 15

What are the paid tier options?

Accepted Answer

We offer three paid tiers: - Pro (€19/month): 5 projects, 3,000 credits/month, 35 devices, 15-day retention, email notifications - Pro+ (€29/month): 10 projects, 10,000 credits/month, 70 devices, 30-day retention, priority support - Max (€49/month): 20 projects, 50,000 credits/month, 98 devices (full library), 90-day retention, priority support

Question 16

Can I cancel my subscription anytime?

Accepted Answer

Yes! You can cancel your subscription at any time from the billing page. Your account will remain active until the end of the current billing period, then automatically downgrade to the Free tier. No cancellation fees.

Question 17

Do you offer refunds?

Accepted Answer

We offer a 14-day money-back guarantee on all paid subscriptions. If you're not satisfied, contact us within 14 days of your first payment for a full refund.

Question 18

Are prices in EUR?

Accepted Answer

Yes, all prices are in EUR. VAT may apply for EU customers depending on your country. VAT is calculated at checkout based on your billing address.

Question 19

Can I test localhost or staging environments?

Accepted Answer

For security reasons, localhost and private IP addresses are not supported. This prevents SSRF (Server-Side Request Forgery) attacks. You can test any publicly accessible URL, including staging environments with public URLs.

Question 20

How does the diff threshold work?

Accepted Answer

The diff threshold is the minimum percentage of changed pixels required to report a regression. A threshold of 0.1% means differences smaller than 0.1% are ignored. This helps reduce false positives from anti-aliasing, font rendering variations, or sub-pixel differences.

Question 21

Is there an API for CI/CD integration?

Accepted Answer

API access for CI/CD integration is on our roadmap and will be available for paid tiers. This will allow you to trigger tests from GitHub Actions, GitLab CI, or any other CI/CD pipeline. For now, tests are triggered manually from the dashboard.

Question 22

How do I handle dynamic content?

Accepted Answer

Dynamic content (like dates, ads, or user-generated content) can cause false positives. We recommend: - Use consistent test data or mock APIs - Set a higher diff threshold for pages with dynamic elements - Consider ignore regions (coming soon) for specific areas

Question 23

What happens if a test fails?

Accepted Answer

If a test run fails (e.g., website timeout, SSL error), you'll see the error message in the test run details. Common issues include: - Website unreachable or slow - SSL certificate errors - Too many redirects Failed runs don't count against your monthly test limit.

Frequently Asked Questions

Getting Started

Browsers & Devices

Data & Privacy

Pricing & Billing

Technical

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