Tinymce | how do I remove two point from the source path - callback

Question

I use Tinymce, I have two dots at the beginning of the url when I insert an image file, how can this be removed.Beacause
The project has been seamlessly integrated into the target file,
I register the HTML result in the database
I am undoing the record but there is a double dot in the image source
I need to remove double
how do I make that change
img src="../Content/Images/Upload" > img src="/Content/Images/Upload"
tinymce.init({
selector: '#HTML',
height: 500,
menubar: false,
plugins: [
'advlist autolink lists link image charmap print preview anchor textcolor',
'searchreplace visualblocks code fullscreen',
'insertdatetime media table contextmenu paste code help'
],
toolbar: 'insert | undo redo | formatselect fontsizeselect | fontselect bold italic backcolor forecolor | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | removeformat | help | link image code',
font_formats: "Andale Mono=andale mono, times;" +
"Arial=arial,helvetica,sans-serif;" +
"Arial Black=arial black,avant garde;" +
"Book Antiqua=book antiqua,palatino;" +
"Comic Sans MS=comic sans ms,sans-serif;" +
"Courier New=courier new,courier;" +
"Georgia=georgia,palatino;" +
"Helvetica=helvetica;" +
"Impact=impact,chicago;" +
"Symbol=symbol;" +
"Tahoma=tahoma,arial,helvetica,sans-serif;" +
"Terminal=terminal,monaco;" +
"Times New Roman=times new roman,times;" +
"Trebuchet MS=trebuchet ms,geneva;" +
"Verdana=verdana,geneva;" +
"Webdings=webdings;" +
"Wingdings=wingdings,zapf dingbats",
fontsize_formats: '8pt 10pt 12pt 14pt 18pt 24pt 36pt 72pt',
content_css: [
'//fonts.googleapis.com/css?family=Lato:300,300i,400,400i',
'//www.tinymce.com/css/codepen.min.css'],
paste_data_images: true,
images_upload_url: '/UploadImage',
images_upload_base_path: '/Upload',
language: 'tr',
});

Answer 1

TinyMCE has a variety of configuration options to deal with URLs and how they are processed. Take a look at the following:
https://www.tinymce.com/docs/configure/url-handling/
...and specifically the following on that page:
https://www.tinymce.com/docs/configure/url-handling/#convert_urls
https://www.tinymce.com/docs/configure/url-handling/#relative_urls
https://www.tinymce.com/docs/configure/url-handling/#urlconverter_callback
The last of those (urlconverter_callback) allows you to implement your own logic if TinyMCE's built in options don't solve your issue.