Guides

Short, plain-English answers to the format questions behind our tools — which format to pick, why files behave the way they do, and how to get unstuck.

• PNG vs JPG: Which Image Format Should You Use?

  PNG and JPG solve different problems. Pick the wrong one and you get either a blurry logo or a 8 MB photo that email refuses to send. Here's the whole decision in a few minutes.

• PNG vs WebP: What's the Difference?

  WebP does most of what PNG does at a fraction of the size — which is why performance audits keep telling you to switch. Here's what actually changes, and when PNG is still the right answer.

• JPG vs WebP: Which Is Better?

  For photos on the web, WebP is simply the better JPG — same picture, quarter to a third fewer bytes. Off the web, the answer flips. This guide draws the line.

• What Is HEIC? Apple's Photo Format, Explained

  If you've plugged an iPhone into a Windows PC and found photos that won't open, you've met HEIC. Here's what the format is, why Apple chose it, and your options for dealing with it.

• HEIC vs JPG: Which Should Your Photos Use?

  HEIC gives you double the photos per gigabyte; JPG gives you a file that opens on anything made in the last thirty years. Here's how to decide which trade-off is yours.

• How to Compress a PDF to 100 KB, 200 KB, or 1 MB

  Upload forms don't negotiate: under the limit or rejected. Here's what each size target realistically takes — and the honest truth about when a target isn't reachable.

• How to Merge PDF Files (and Keep Them in Order)

  One attachment beats five. Merging PDFs takes under a minute — the part worth thinking about is order, and what to do when the combined file gets big.

• How to Delete Pages from a PDF

  PDFs don't have a delete key — but they don't need one. Name the pages you want to keep, and what's left behind is gone. Here are the recipes.