The Crucialio blog
A little know-how goes a long way.
Practical guides for getting better results from everyday tools.
Image size, file size and DPI: three different things
An image has pixel dimensions, an encoded file size and sometimes print-density metadata. Changing one does not necessarily change the others.
Read the guide →What happens when you compress a PDF?
Smaller is useful, but the method matters. Understand the tradeoff before replacing your original document.
Read the guide →What a file checksum can—and cannot—tell you
A checksum is a fingerprint of bytes, useful for detecting a changed or incomplete download.
Read the guide →