Lost Pixel supports arbitrary code execution through Playwright page.evaluate() & page.addStyleTag(). This will ensure that you isolate all the changes in the browser execution to Lost Pixel runs; your normal code & customers will not be affected by this.
lostpixel.config.js
module.exports= { pageShots: { baseUrl:'http://172.17.0.1:9000', mask: [{ selector:'span.gatsby-resp-image-background-image' }], }, lostPixelProjectId:'YOUR_PROJECT_ID', apiKey:process.env.LOST_PIXEL_API_KEY,beforeScreenshot:async (page) => {awaitpage.addStyleTag({ content:`iframe { visibility: hidden; } /* do not show underline animation */ #toc-holder a { background-size: 0 !important; background-image: none !important; } /* skip image display within section */ section img { visibility: hidden; } /* hide cookie banner */ #onetrust-consent-sdk { display: none; } /* reset menu item alignment */ #sidebar-holder li a { vertical-align: baseline; } `, }) },}