Guides
Practical, no-fluff articles on file compression, image formats, and photo privacy — written by the people who build the tools. Each guide pairs with a free tool you can use right away.
How to compress a PDF to meet any upload size limit
Court e-filing portals, job applications, and government websites all reject files over their cap. Why scanned PDFs balloon to 50 MB, the difference between compression that preserves selectable text and compression that destroys it, and how to hit a target size on the first try.
Read the guide →What is EXIF data — and why you should strip it before sharing photos
Every smartphone photo silently embeds GPS coordinates, a timestamp, and your device details. Which platforms remove it for you (and which don't), how to see what's hiding in your own photos, and the one-click way to remove it.
Read the guide →HEIC vs JPG vs PNG vs WebP vs AVIF: which image format should you use?
Five formats, five very different trade-offs. A plain-English comparison of compression efficiency, compatibility, and quality — plus a simple decision rule for emailing, posting to the web, and archiving your originals.
Read the guide →More guides are on the way
We add a new guide whenever we ship a tool or get a question often enough that it deserves a proper answer. Check the updates page to see what's new, or suggest a topic.