- Free
- No sign-up
- Works on any device
No tool matches your search.
- Free
- No sign-up
- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
Looking for QR codes…
Speaker and headphone test
Check left and right, bass, sweep, noise and phase on your speakers or headphones.
- Free
- No sign-up
- Works on any device
About Speaker and headphone test
Run quick checks on speakers or headphones: a left and right test to confirm channels are not swapped, a bass test, a frequency sweep, noise, and a phase test that reveals reversed wiring. Phase problems make bass sound thin because the two speakers cancel each other out.
How to use Speaker and headphone test
- Start the test above.
- Follow the instructions on the screen.
- See your result straight away, and try again to beat it.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
How do I know if my speakers are out of phase?
Play the phase test. If the sound seems to come from nowhere in particular or bass sounds weak, swap the positive and negative wires on one speaker.
Is Speaker and headphone test free?
Yes. Speaker and headphone test on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.