---id: compare-optionstitle: Compare Options---Compare options are options that influence the way the comparison, by [ResembleJS](https://github.com/Huddle/Resemble.js) is being executed.:::info NOTEAll compare options can be used during service instantiation or for each single `checkElement`,`checkScreen` and `checkFullPageScreen`. If a method option has the same key as an option that has been set during the instantiation of the service, then the method compare option will override the service compare option value.:::### `ignoreAlpha`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Compare images and discard alpha.### `blockOutSideBar`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can only be used for `checkScreen()`. It will override the plugin setting. This is **iPad only**_Automatically block out the sidebar for iPads in landscape mode during comparisons. This prevents failures on the tab/private/bookmark native component.### `blockOutStatusBar`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting. This is **Mobile only**_Automatically block out the status and address bar during comparisons. This prevents failures on time, wifi or battery status.### `blockOutToolBar`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting. This is **Mobile only**_Automatically block out the toolbar.### `ignoreAntialiasing`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Compare images and discard anti-aliasing.### `ignoreColors`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Even though the images are in color, the comparison will compare 2 black/white images### `ignoreLess`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Compare images and compare with `red = 16, green = 16, blue = 16, alpha = 16, minBrightness=16, maxBrightness=240`### `ignoreNothing`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Compare images and compare with `red = 0, green = 0, blue = 0, alpha = 0, minBrightness=0, maxBrightness=255`### `ignoreTransparentPixel`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Compare images and it will ignore all pixels that have some transparency in one of the images### `rawMisMatchPercentage`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_If true the return percentage will be like `0.12345678`, default is `0.12`### `returnAllCompareData`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_This will return all compare data, not only the mismatch percentage### `saveAboveTolerance`- **Type:** `number`- **Default:** `0`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Allowable value of `misMatchPercentage` that prevents saving images with differences### `largeImageThreshold`- **Type:** `number`- **Default:** `0`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Comparing large images can lead to performance issues.When providing a number for the number of pixels here (higher than 0), the comparison algorithm skips pixels when the image width or height is larger than `largeImageThreshold` pixels.### `scaleImagesToSameSize`- **Type:** `boolean`- **Default:** `false`- **Mandatory:** no- **Remark:** _Can also be used for `checkElement`, `checkScreen()` and `checkFullPageScreen()`. It will override the plugin setting_Scales 2 images to the same size before execution of comparison. Highly recommended to enable `ignoreAntialiasing` and `ignoreAlpha`