Do online compressors keep my files?

It depends on the service, but your file is uploaded and processed on their servers, and retention policies vary. Local tools avoid the question entirely by never uploading.

Is local compression slower?

Usually it is faster, because there is no upload or download. Modern devices compress files quickly on their own hardware.

Why local compression is more private than online tools

Compressing a file seems harmless, but with most online tools it means uploading your file to a stranger server. For anything sensitive, that is a real risk worth understanding.

What happens with a typical online compressor

You drop a file into a website, it travels over the internet to a server you do not control, gets processed there, and the result is sent back. During that round trip your file exists on someone else infrastructure, subject to their logging, retention, and security.

When this matters most

Contracts, invoices, and other business documents.
Medical, legal, or financial records.
Client photos and unreleased creative work.
Anything you would not email to a stranger.

How local compression is different

Local compression does all the work on your own device. The file is never uploaded, so there is no server copy, no transfer to intercept, and nothing to retain. It is also faster, because nothing waits on your connection, and it works with no internet at all.

Privacy without the trade-off

CompressEasy runs in your browser for images and as a desktop app for images, video, PDF, and PowerPoint. Either way, your files stay on your device, so you get the convenience of a compressor without handing your data to a third party.