Does compression upload my image?
No. Decoding, resizing, encoding, and size comparison happen in this browser without a file-upload request.
- Quality and maximum-dimension controls
Guide
Make an image smaller while keeping the photo on your device and showing exactly what changed.
Compress a JPG, PNG, or WebP image locally by quality, dimensions, or an optional target file size. Compare the result before downloading.
Clear answers
Make an image smaller while keeping the photo on your device and showing exactly what changed.
Compress a JPG, PNG, or WebP image locally by quality, dimensions, or an optional target file size. Compare the result before downloading.
Why can PNG become larger?
PNG is lossless and is often inefficient for photographs. JPG or WebP usually produces a much smaller photographic file.
- Optional target size for JPG or WebP
Does compression reduce quality?
Lossy JPG and WebP compression can remove visual detail. The preview and exact output size let you choose the tradeoff before downloading.
- Before-and-after dimensions and bytes
A local check
Make an image smaller while keeping the photo on your device and showing exactly what changed.
Compress a JPG, PNG, or WebP image locally by quality, dimensions, or an optional target file size. Compare the result before downloading.
Selected file
Choose a supported image.
Choose a supported image.
Review before sharing
Optional target size for JPG or WebP
Pick output format, quality, dimensions, or a target size.
Local verification
Create and inspect the compressed copy.
Create and inspect the compressed copy.
Download only when the result looks acceptable.
Four local steps
Why can PNG become larger?
- 01
Quality and maximum-dimension controls
Choose a supported image.
- 02
Optional target size for JPG or WebP
Pick output format, quality, dimensions, or a target size.
- 03
Before-and-after dimensions and bytes
Create and inspect the compressed copy.
- 04
Quality and maximum-dimension controls
Download only when the result looks acceptable.
Browser privacy
Private Image Compressor
Quality and maximum-dimension controls
No. Decoding, resizing, encoding, and size comparison happen in this browser without a file-upload request.
Optional target size for JPG or WebP
PNG is lossless and is often inefficient for photographs. JPG or WebP usually produces a much smaller photographic file.
Before-and-after dimensions and bytes
Lossy JPG and WebP compression can remove visual detail. The preview and exact output size let you choose the tradeoff before downloading.
Clear answers
Does compression reduce quality?
Lossy JPG and WebP compression can remove visual detail. The preview and exact output size let you choose the tradeoff before downloading.
- PNG output does not use a lossy quality setting.
- A requested target size is an estimate and may not be reachable without reducing dimensions.
- Re-encoding can remove source metadata and change color or compression characteristics.
Private workspace
Private Image Compressor
Make an image smaller while keeping the photo on your device and showing exactly what changed.