Screenster vs SnapDiff
Screenster
screenster.ioSnapDiff
snapdiff.aiSide by side
| Figure | Screenster | SnapDiff |
|---|---|---|
| Price from | $25/mo | $19/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 6 | 5 |
| Spec score · Visual Regression Testing Software | 8.7 (#2) | 7.8 (#16) |
| Headquarters | Washington, DC area | Sacramento, California, United States |
| Security | The privacy policy says Screenster uses encryption, firewalls, and SSL technology as security measures, while noting these do not guarantee against breaches. | The privacy policy states traffic uses TLS 1.2+, API keys are stored as hashes, and sensitive integration credentials are encrypted at rest. |
| Support | The support page offers paid plans with web or web and phone support, annual hour quotas, and stated response times. | The contact form says SnapDiff will respond to questions, feedback, or enterprise pricing inquiries within one business day. |
Plans
Screenster
- FreeFree
- FreeFree
- Local ScreensterFree
- Basic$25 a month
- Standard$45 a month
- Premium$75 a month
In their own words
Screenster
Screenster is a UI regression testing tool for automating tests of web interfaces. Its no-code recorder captures actions on web pages without requiring code, element IDs, checks, or assertions. Test runs can be compared with a baseline to identify new, deleted, or changed visual and page content. Smart selectors can find page elements after they move or change and adjust timeouts automatically. Users can also write JavaScript or Java tests against the Selenium API within Screenster. The locally installed server can run offline. Screenster says it stopped running its online servers after August 1, 2023, and made local use free without restrictions. The installation guide requires Windows and lists Windows 8, 8.1, 10, Server 2012, and Server 2016; local browser documentation lists Chrome, Firefox, and Internet Explorer. Plans include Free at free, Basic at $25 a month, Standard at $45 a month, and Premium at $75 a month, each billed per tester per month.
SnapDiff
SnapDiff captures web pages and compares screenshots pixel by pixel to identify visual regressions. Its HTTP API can compare two URLs without a test suite or CI/CD pipeline, and each diff returns a percentage, a highlighted image, and bounding boxes around changed regions. A GitHub Action runs visual checks on pull requests and can discover Vercel preview URLs. For scheduled monitoring, the watch API checks URLs on a cron schedule and sends webhooks when changes exceed a threshold. Comparisons use pixelmatch with antialiasing detection, configurable thresholds, ignore regions, and CSS selector masking. SnapDiff accepts HTTPS preview, staging, Storybook, and deployment URLs, including those on Vercel, Netlify, and Cloudflare Pages. Its MCP server supports Claude Code, Cursor, Windsurf, and other MCP clients for verifying UI changes. The service says it hides more than 40 cookie banners and 20 chat widgets and blocks more than 30 ad and tracker domains during capture. Free includes 200 diffs and 2,000 screenshots per month; paid plans start with Dev at $19 a month. Screenshots and diff images are retained during a subscription and for 30 days afterward.