Compress PDF is mainly useful for size limits: email attachments, upload forms, messaging apps and document packs that are too heavy to send comfortably.

What matters here is not a theoretical percentage, but whether the file still looks acceptable after compression and becomes easy to share.

This step often appears at the end of the workflow, after editing or merging documents into one final file.

Compress PDF is often useful because users arrive with a concrete delivery problem: email limits, upload restrictions, job portals, school systems or messaging apps.

Explaining when compression is useful and what to verify before downloading makes the page more helpful and less likely to look thin or repetitive.