https://prettyhtml.com/
Pretty HTML - Formatter, Editor and Cleaner
Free online Pretty HTML converter with code cleaning features and easy switch between the visual and source editors. It works perfectly for any document...
pretty htmland cleanerformattereditor
https://prettyhtml.com/remove-html-classes-ids/
Remove HTML Classes and IDs – Pretty HTML
Remove class and id attributes from your HTML with Pretty HTML. Clean markup while preserving content and structure.
html classesremoveidspretty
https://prettyhtml.com/remove-successive-spaces-from-html/
Remove Successive Spaces from HTML – Pretty HTML
Remove successive spaces (including combinations) from your HTML to produce cleaner, more readable markup.
remove successive spacesfrom htmlpretty