We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more›
How-to Guides
Our experts test and rate hundreds of products each year. We’re updating our roundups all the time, so you always know what’s best to buy.
Your Apple Watch Can Once Again Measure Blood Oxygen Levels. Here's How
If Blood Oxygen vanished, here’s how to enable it again—supported models, setup, tips.
Is Your Laptop Battery Dying? Here's How to Check in Windows
Generate Windows’ battery report, read wear and cycles, and apply fixes or upgrades.
I Set Up a Burner Phone Number to Protect My Privacy. You Should, Too
Create a secondary number for sign-ups and marketplaces—keep your real number private.
How to Extract Text from Scanned PDF Files (OCR Guide) 2025
Learn how to extract text from scanned PDFs using free OCR tools, online converters, and built-in software. Convert scanned documents to editable text in minutes.
How to Fill PDF Forms Online Without Adobe Acrobat: Complete Guide 2025
Learn how to fill PDF forms online for free using browser-based tools, mobile apps, and built-in software. No Adobe Acrobat required.
How to Password Protect PDF Files: Complete Guide 2025
Learn how to password protect PDF files using free online tools, Adobe Acrobat, and built-in methods. Secure your sensitive documents in minutes.