Question 1

How much can JPG files be compressed?

Accepted Answer

Typical JPG images can be reduced by 40-60% at quality 75 with minimal visible difference. Lower quality settings produce smaller files but may show compression artifacts.

Question 2

Does compressing a JPG reduce image dimensions?

Accepted Answer

No. Compression only changes file size by adjusting the level of detail stored. The image dimensions (width and height) remain the same.

Question 3

Will I lose quality when compressing a JPG?

Accepted Answer

JPG uses lossy compression, so some quality is lost with each re-encoding. At quality 75, the difference is usually imperceptible for photographs. For critical images, preview the result before discarding the original.

Question 4

Are my files uploaded to a server?

Accepted Answer

No. Compression happens entirely in your browser. Your images never leave your device.

Compress JPG Images

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