Image ToolsInstant
Image Compressor
Compress JPG and PNG images in your browser. Adjust quality with a slider and compare file sizes before downloading.
Examples
See what this tool can do.
Shrink a photo for upload
Compress a large photo to fit a size limit while keeping it clear.
Speed up a web page
Reduce image weight before adding it to a site.
Tips & tricks
Get the most out of it.
- 1Watch the preview — stop lowering quality once artefacts appear.
- 2Great for photos; for sharp graphics, PNG may look better.
- 3Compressing again after export loses more quality each time.
Advertisement
About Image Compressor
What this tool does
Image Compressor reduces an image's file size by adjusting JPEG quality, with a live preview of the trade-off.
How to use it
- Upload an image.
- Adjust the quality slider and watch the size change.
- Download the compressed image.
How it works
The image is redrawn to a canvas and re-encoded as JPEG at your chosen quality, entirely in your browser — lower quality means a smaller file.
Important considerations
- JPEG is lossy; very low quality introduces visible artefacts, especially on text and sharp edges.
Privacy
This tool runs entirely in your browser. Nothing you enter is uploaded to a server.
Related tools
Frequently asked questions
Not if you keep quality reasonable. The live preview lets you find the smallest size that still looks good.