# Free visual testing tools

> Free tools for visual testing: compare two screenshots with Snapvisor's diff engine and estimate the screenshots and cost of your visual test suite.

Source: https://snapvisor.io/tools

Free tools

Tools that run in your browser, with no account: no sign-up, nothing uploaded.

## Pick a tool

- **[Image diff tool](https://snapvisor.io/tools/image-diff)** — Compare two screenshots or images in your browser: a diff overlay, the share of changed pixels and the same changed/unchanged verdict Snapvisor's engine gives.
- **[Screenshot calculator](https://snapvisor.io/tools/screenshot-calculator)** — Work out how many screenshots your visual tests take a month and what that costs on Snapvisor, Percy, Chromatic and Applitools, from their published prices.

## Visual testing in your pipeline

The [visual regression testing guide](https://snapvisor.io/visual-regression-testing) explains how screenshot comparison works in CI, and the [comparison pages](https://snapvisor.io/compare) set Snapvisor beside Percy, Chromatic and Applitools.