1. A computer-implemented method comprising: detecting a request on a client device to embed a preview region including content item previews corresponding to content items included in a folder within a document displayed on the client device, the document having visible document content, wherein the content item previews are synchronized with the content items included in the folder in a content management system, each content item preview including a portion of visible content of a corresponding content item displayed within the content item preview; displaying, within the preview region, a subset of content item previews; in response to receiving a vertical scrolling input, scrolling the document content, including the preview region, in a vertical direction; and in response to receiving a horizontal scrolling input, irrespective of a location of the received horizontal scrolling input: scrolling out of the preview region a number of the content item previews; and scrolling into the preview region additional content item previews without scrolling the document.
1. A computer-implemented method comprising: detecting a request on a client device to embed a preview region including content item previews corresponding to content items included in a folder within a document displayed on the client device, the document having visible document content, wherein the content item previews are synchronized with the content items included in the folder in a content management system, each content item preview including a portion of visible content of a corresponding content item displayed within the content item preview; displaying, within the preview region, a subset of content item previews; in response to receiving a vertical scrolling input, scrolling the document content, including the preview region, in a vertical direction; and in response to receiving a horizontal scrolling input, irrespective of a location of the received horizontal scrolling input: scrolling out of the preview region a number of the content item previews; and scrolling into the preview region additional content item previews without scrolling the document. 15. The method of claim 1 further comprising: displaying the subset of content item previews in at least one column within the preview region; and responsive to receiving a vertical scrolling input within the preview region: removing a number of content item previews from the preview region by vertically scrolling the number of content item previews out of the preview region; and vertically scrolling additional content item previews into the preview region.