README.md

crossbrowser-image-testing

Automates comparing web pages to see if the version changed. Can be useful for visual testing automation.

supported browsers: chromium, firefox, webkit

Run locally: yarn && yarn dev

Endpoints:

GET /screenshot

Calling this endpoint will create a snapshot of the specified url in one of the possible directories: downloads/original/ or downloads/new/ (if retake).

query params:

Query param	Required	Type	Description	Example
url	Yes	string	Valid url to take a screenshot and eventually to compare	https://github.com/mjrdnk/crossbrowser-image-testing
retake	No	boolean	Will retake the image (puts it in new/ directory)	1

GET /compare

Prerequisites: new and original images are screenshot and sitting in original/ and new/ directories in the project root under downloads/. Calling this endpoint will create a diff between new/ and original/ image of each browser type, and will place the diffs in diff/ directory.

Visual explanation

File Tree after correct execution of 2 endpoints

original image (hence commit time for example 2 minutes)

new image (hence commit time for example 3 minutes)

diff image (red spots indicating where the image has changed)