Needle vs SmartUI
Needle
github.com
SmartUI
testmuai.comSide by side
| Figure | Needle | SmartUI |
|---|---|---|
| Price from | Free | $199/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Plans published | 1 | 3 |
| Spec score · Visual Regression Testing Software | 8.1 (#9) | 8.0 (#12) |
| Integrations | The README demonstrates a nose test case using Selenium to open a web page and check an element screenshot. | The product page says SmartUI can export diffs and fix suggestions to Jira or Slack and shows integrations including GitHub and GitLab. |
| Purpose | Needle tests CSS and other web visuals by comparing screenshots with known good screenshots. | SmartUI captures and compares application UI screenshots against baselines to identify visual regressions across browsers, devices, apps, and PDFs. |
| Security | GitHub reports that the project has no SECURITY.md policy and no published security advisories. | TestMu AI states its platform is SOC 2 Type 2 compliant and GDPR and CCPA compliant; it says test virtual machines are reset and user data is wiped after sessions. |
Plans
In their own words
Needle
Needle is an open-source Python testing library for checking rendered website visuals and layout. It captures selected page areas and compares them with baseline screenshots, helping identify visual changes in CSS, fonts, images, and SVGs. It also tests calculated CSS values and HTML element positions. Needle works with Selenium and nose, and documentation describes installing it with pip after Selenium. Browser-driver options include remote, PhantomJS, Firefox, Chrome, Internet Explorer, Opera, and Safari; NeedleFirefox is the default. PIL is the default screenshot engine, with PerceptualDiff and ImageMagick available as alternatives. PerceptualDiff and ImageMagick can create a diff PNG when comparisons fail. Tests can set viewport dimensions for responsive-site checks. Screenshot cleanup after successful tests is optional and disabled by default, while failed-comparison screenshots remain available. Package metadata describes the project as operating-system independent and for developers, while the listed platform is Linux. The repository uses a BSD license. PyPI lists version 0.5.0, released April 2, 2017, as the latest release. Needle is free and has no paid plan.
SmartUI
SmartUI captures application UI screenshots and compares them with baselines to identify visual regressions across browsers, devices, apps, and PDFs. Its Visual AI filters rendering noise and explains meaningful differences, while Smart Ignore can mask dynamic regions and distinguish layout shifts from other changes. Root Cause Analysis compares screenshot differences with code changes and suggests fixes. The listed frameworks include Selenium, Playwright, Puppeteer, Cypress, Appium, Espresso, XCUITest, and Jest. SmartUI describes coverage across 3,000+ browser combinations and 10,000+ real devices, and supports Figma-to-live-UI comparison and PDF checks for text, layout, font, and graphic differences. Git branch-aware baselines work across branches and CI/CD pipelines; diffs and suggestions can be exported to Jira or Slack, with GitHub and GitLab integrations listed. The free plan includes 2,000 screenshots for lifetime use and one month of build history. SmartUI Visual Regression costs $199 a month, billed annually, and includes one year of build history; screenshot volume is selected with the plan.