Image Compressor
Shrink an image's file size without changing its dimensions — drag the quality slider and see the resulting size before you download.
Need different pixel dimensions instead? Use the Image Resizer — this tool keeps the same dimensions and shrinks file size only.
How compression works here
The image is redrawn onto a canvas and re-encoded at the quality level you choose — lower quality means more aggressive compression (smaller file, more loss of fine detail), while PNG stays lossless regardless of the slider since PNG doesn't support a quality setting. WebP typically produces the smallest file for a given visual quality among the three options.
Common uses
- Getting a photo under a file-size limit for an upload form or email
- Speeding up a web page by shrinking oversized images
- Comparing how much a JPEG can shrink at different quality levels before it starts looking noticeably worse
Frequently asked questions
What quality setting should I use?
0.7–0.8 is a good starting point for most photos — it noticeably reduces file size with minimal visible quality loss. Drag the slider lower for smaller files if quality matters less, or higher if you need the image to look as close to the original as possible.
Which format compresses images the smallest?
WebP typically produces the smallest file size for a given visual quality among the three options here, followed by JPEG; PNG stays lossless and is usually the largest of the three since it doesn't use a quality slider.
Why doesn't the PNG option get smaller when I lower the quality slider?
PNG is a lossless format and doesn't have a quality setting — the slider only affects JPEG and WebP output. To shrink a PNG file, convert it to JPEG or WebP instead.
How much can I compress an image before it looks bad?
It depends on the image's content — busy, detailed photos tolerate more compression than images with sharp edges, text, or flat color areas. Use the live before/after preview to find the point where the size savings are worth the visible quality trade-off.