Why Is My PDF So Big? How to Reduce PDF File Size for Email
PDF too large to email or upload? Learn what makes PDFs huge, how to shrink scanned PDFs by 50–90%, and when compressing won't help. Free, in your browser.
Guides and tips
Practical how-tos for fixing your devices and working with images and PDFs.
Make a Wi-Fi QR Code So Guests Never Ask for the Password Again
Make a free Wi-Fi QR code so guests can join your network by pointing their camera at it. Works on iPhone and Android, plus printing and security tips.
What Is a HEIC File, and How Do You Open It on Windows?
iPhone photos saved as .HEIC files you can't open? What HEIC is, how to open it on Windows, convert it to JPG, and stop your iPhone saving it.
Passport Photo Size by Country: US, UK, Canada, Schengen and India
Passport photo sizes for the US (2x2 inch), UK and Schengen (35x45 mm), Canada (50x70 mm) and India, plus the mistakes that get photos rejected.
How to Compress a Photo to 20KB, 50KB or 100KB for Online Forms
Form rejecting your photo or signature for being too big? Shrink an image to an exact size in KB without making it blurry, on phone or PC.
Bought a New Monitor? Check It for Dead Pixels Before the Return Window Closes
Dead, stuck or hot pixels? Test a new monitor, laptop or TV in two minutes, tell the pixel faults apart, and know what to do if you find one.
Webcam Not Working? Every Fix for Windows, Mac and Your Browser
Black screen, 'camera in use' error or no camera found? Fix your webcam on Windows, Mac and Chrome step by step, then test it online in seconds.
Your Call Starts in 5 Minutes and Your Mic Isn't Working: A Quick Checklist
Mic not working on Zoom, Teams or Google Meet? A quick checklist for Windows and Mac: permissions, the right input device, and apps hogging the mic.
Phone Speaker Sounds Muffled? 7 Fixes to Try Before You Pay for a Repair
Muffled, quiet or crackly phone speaker? Try these 7 fixes, from settings and cases to dust and water, and learn when it's really a hardware fault.