​The `media_upload_tabs()` function in WordPress generates the default media upload tabs, which can be modified using various filters such as adding or removing tabs, changing the default tab, reordering tabs,…

​The article provides information about the WordPress `media_upload_max_image_resize()` PHP function that allows users to scale images during the upload process

Outputs the legacy media upload form for the media library.

Retrieves the legacy media library form in an iframe.

​The `media_upload_image()` function in WordPress is used to handle the uploading of an image

​The `media_upload_html_bypass()` function in WordPress allows you to display the browser’s built-in uploader message when certain conditions are met

​The `media_upload_header()` function is used in WordPress to output the legacy media upload header

​The `media_upload_gallery_form()` function in WordPress allows developers to easily create a gallery form within an upload iframe

Retrieves the legacy media uploader form in an iframe.