01 / 3 minutes
Before your next call
Check your microphone, speakers and camera before joining. Repeat in your meeting app: its permissions and device selection may differ.
Start this check →YOUR EVERYDAY DEVICE TOOLKIT
Small tools.
Less friction.
Convert images, count words, create QR codes and check your devices. Useful tools that work in your browser, without an account.
Free. No account. No installation.
Your tests stay on your device
12 focused toolsYour tests stay on your device
15 languagesAll tools
Start with the essentials
Free. No account. No installation.
WebP to JPG
Batch conversion with quality control, background color and ZIP download. Local processing. No account required.
PNG to JPG
Turn transparent PNGs into JPG with your chosen background. Local processing. No account required.
JPG to WebP
Adjust WebP quality and compare the output size with your original JPG. Local processing. No account required.
Bulk image resizer
Fit a batch within maximum width and height, preserving proportions without enlargement. Local processing. No account required.
Image compressor
Adjust JPEG or WebP quality and compare actual output sizes. Local processing. No account required.
Remove image metadata
Recreate images from pixels without copying EXIF, GPS, IPTC or XMP. PNG encodes pixels losslessly. Local processing. No account required.
Word & character counter
Count words, Unicode characters and lines; estimate reading time at your chosen speed. Local processing. No account required.
Change text case
Convert uppercase, lowercase or word initials using language-aware rules. Local processing. No account required.
Remove duplicate lines
Keep the first occurrence and original line order; optionally ignore case and surrounding spaces. Local processing. No account required.
QR code generator
Static codes for text and URLs, with PNG and SVG exports. No expiry or tracking redirect. Local processing. No account required.
Wi-Fi QR code generator
Share personal WPA or open networks with a scannable code. PNG and SVG exports. Local processing. No account required.
Keyboard test
See which physical keys register, with QWERTY, AZERTY and QWERTZ layouts.
Key rollover test
Find how many keys your browser receives at the same time.
Keyboard repeat test
Look for unusually close presses without counting held-key auto-repeat.
Mouse test
Check left, right and middle buttons, scrolling and pointer movement.
Double-click test
Check for unexpectedly rapid pairs of left clicks.
Microphone test
See your input level, select a microphone and listen to a short local recording.
Webcam test
Preview your camera, switch devices and inspect the delivered image.
Stereo speaker test
Identify left and right audio channels with short, quiet tones.
Dead pixel test
Inspect your screen using clean, full-screen solid colours.
Display gradient test
Inspect grayscale transitions and near-black and near-white detail.
Gamepad test
See controller buttons, trigger values and stick axes in real time.
Touchscreen test
Trace a grid and inspect simultaneous finger contacts.
No matching tools. Try a different word.
Guided checks
A little guidance goes a long way.
Follow a practical checklist and keep your observations together.
02 / 10 minutes
Buying a used computer
A practical check of accessible peripherals. Also inspect the battery, ports, charger and hardware specifications separately: a browser cannot certify them.
Start this check →
03 / 5 minutes
After a repair or a new setup
Repeat input checks after reconnecting or replacing equipment. Compare observations before and after while keeping the same settings.
Start this check →1001SaaS
Good questions. Straight answers.
No audio, video or typed text is uploaded.
Is my hardware definitely working if a test passes?
No. A browser shows signals it receives. Intermittent faults, firmware, system shortcuts and application-specific problems may need a separate check.
Do I need to allow my camera or microphone?
Only for those specific tests, after you press Start. Other tests do not request those permissions. Stop ends the active stream.
Where are my results kept?
Only your selected observations and timestamps are saved in this browser, for 24 hours. Recordings remain in memory and are discarded when you leave.