Question 1

Are my images uploaded to compress them?

Accepted Answer

No. Compression runs in the browser. The files never leave your device.

Question 2

How much smaller can a photo get?

Accepted Answer

Often 40 to 80 percent, depending on the original and the quality you pick. The page shows the new size before you download.

Question 3

What formats can I compress?

Accepted Answer

JPG, PNG, and WebP. For iPhone HEIC, convert to JPG first.

Question 4

What do quality and max size do?

Accepted Answer

Quality trades sharpness for bytes. Max width or height scales down oversized photos and keeps the aspect ratio.

Question 5

Can I compress a batch?

Accepted Answer

Yes. Drop several files and download each one or all of them together.

Question 6

Can I change settings and try again?

Accepted Answer

Yes. Adjust quality or the max edge, then apply the new settings to the same batch.

Question 7

Will PNG stay lossless?

Accepted Answer

PNG can still drop weight by resizing. Heavy savings usually come from JPG or WebP quality.

Question 8

Is this the same as Compress PDF?

Accepted Answer

No. This page is for stills. Use Compress PDF when the file is already a PDF.

Question 9

Should I resize instead?

Accepted Answer

Use Resize Image when a site wants exact pixels. Use this page when the pixels are fine and the file is heavy.

Question 10

Are the originals overwritten?

Accepted Answer

No. You download new files.

Question 11

Why won't an iPhone photo drop?

Accepted Answer

It is probably HEIC. Convert it on HEIC to JPG, then compress the JPG.

Compress Image - Shrink JPG, PNG, and WebP