Is inspect element illegal? I did a thing with it was about a friend I showed her, and she sued me to the cop. Why the hell would Chrome, Firefox, Opera, and much more internet browsers have it if it was illegal? The answer to your question is no.
Why is Inspect Element allowed?
Change Anything with Elements. Front-end developers use the Inspect Element tool every day to modify the appearance of a web page and experiment with new ideas—and you can, too. Inspect Elements lets you tweak the appearance and content of a web page, by adding temporary edits to the site's CSS and HTML files.
Can you permanently inspect element?
Permanent Inspect Element. This extension lets you save the changes you make to a static web page using Inspect Element to remain there even after you refresh the page.