Guides
Straight answers to the questions people ask before they reach for a file tool: what is safe, what a file reveals, which format to use, and how to check for yourself.
- Is it safe to merge PDFs online?It depends on one thing: whether the file leaves your computer. Here is how to tell, and how to merge without it leaving.
- How to remove location data from photosEvery phone photo stores where it was taken. Here is how to remove it on each platform, and how to check.
- What is EXIF data, and what does a photo reveal?The information stored inside a photo file, what it can give away, and how to see and remove it.
- How to open HEIC files on WindowsWhy iPhone photos will not open, the three fixes, and the fastest free way to convert a whole batch to JPG.
- How to compress a PDF without losing qualityWhere the size comes from, which reductions are free, and where the quality trade-off actually starts.
- How to reduce an image's file sizeTwo settings do almost all the work. Here are the numbers to use for email, forms, listings and websites.
- Does this website upload my files? How to checkA five-minute check with tools already in your browser. No trust required.
- How to sign a PDF without Adobe AcrobatSign a contract in your browser in a minute, with nothing uploaded, and the built-in options on every platform.
- JPG, PNG, WebP or HEIC: which image format to useA practical rule for each job, and the conversion to get there.
- How to convert and edit files without uploading themBrowsers can do most file jobs themselves. What runs locally, why it is enough, and which tools to use.