Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

Learn More

Website doesn't want me opening developer tools

  • 10 답장
  • 1 이 문제를 만남
  • 8 보기
  • 최종 답변자: newbie442

more options

First BEFORE going to this website I open developer tools (CTRL SHIFT I)

Then I visit example URL

The video doesn't play and it crashes my browser TAB.

What's going on here how can websites know i'm using devtools and why wasn't this patched 20 years ago?

Thank you.

First BEFORE going to this website I open developer tools (CTRL SHIFT I) Then I visit [https://ww4.0123movie.net/movie/tpb-afk-the-pirate-bay-away-from-keyboard-16353.html?play=1 example URL] The video doesn't play and it crashes my browser TAB. What's going on here how can websites know i'm using devtools and why wasn't this patched 20 years ago? Thank you.

모든 댓글 (10)

more options

Does it make any difference if you undock the Developer Tools so they are in a separate floating window instead of taking up space in the tab?

more options

The website inserts debugger statements in their JavaScript code.

You can try to disable all breakpoints in the debuger.

more options

cor-el said

The website inserts debugger statements in their JavaScript code. You can try to disable all breakpoints in the debuger.

I dont understand that. I guess I'm stuck with this.

more options

Hi newbie442, I think the suggestion is to switch to the Debugger tool and click the button I've marked in the attached screenshot and see whether the site can still detect that the DevTools are open.

more options

@jscher2000 Tried it now and does not seem to affect anything. Please go ahead jscher and try the website too.

more options

And btw there are thousands of websites now taking advantage of this anti-devtools trick, i just picked 1 website of many.

more options

I don't visit sites like that for security reasons.

Did undocking the tools make any difference? If the page is detecting a discrepancy between the window size and the viewable area, that might help. Click the ••• button toward the right end of the DevTools toolbar to make the change.

more options

Yes I tried that 12 hours ago, forgot to mention, not working.

글쓴이 newbie442 수정일시

more options

Note that reloading the page with the dubugger window open seems to trigger this debugger statement even with all breakpoints disabled. If I first load the page with the devtools closed and only only open the devtools once loading is finished then it works for me with this website. You need to disable all breakpoints beforehand. That way you can at least use the Inspector.

more options

I want to use “Network Monitor” not inspector