Is my image uploaded?
No. Processing happens directly in your browser.
Compress Image
Compress images online – reduce file size, adjust dimensions and choose an output format directly in your browser.
Image processing happens directly in your browser. The image is not uploaded to our server.
Select image
Select JPG, PNG or WebP – up to 20 MB, one file per operation.
Original image
Compression settings
90–100%: very high quality · 70–89%: good compromise · 40–69%: stronger compression · below 40%: visible quality loss possible
PNG is saved losslessly. File size is mainly reduced by smaller dimensions or format conversion.
Metadata may include camera model, capture date or GPS location.
JPEG does not support transparency. Transparent areas are filled with the selected background color.
Stronger compression may cause visible quality loss. Keep important original images as well.
Result
Understanding image compression
How do I compress an image?
Select a JPG, PNG or WebP file, adjust quality and optionally dimensions, then start compression and download the result.
What is image compression?
Image compression reduces file size by storing image data more efficiently and optionally reducing dimensions.
Does image quality get worse?
Lossy formats such as JPEG or WebP may lose visible quality. PNG keeps image information but often reduces file size less.
What is the difference between JPG, PNG and WebP?
JPEG is usually best for photos, PNG for graphics and transparency, WebP can often produce smaller files at similar quality.
Which format is best for photos?
JPEG and WebP work especially well for photos.
Which format is best for screenshots?
Screenshots with sharp edges and text are often saved as PNG or WebP.
Can I reduce image dimensions?
Yes. Smaller dimensions often reduce file size very effectively.
Are transparent images supported?
Yes. PNG and WebP can keep transparency. JPEG uses a background fill.
What happens to EXIF and GPS data?
Metadata is removed by default. Visual orientation is applied to pixels beforehand.
Are images stored permanently?
No. Processing happens locally in your browser and the image is not uploaded to the server.
Why can a compressed file sometimes be larger?
This can happen with an unfavorable output format, for example converting JPEG to PNG.
What is the difference between lossless and lossy compression?
Lossy formats such as JPEG permanently remove detail. Lossless formats such as PNG preserve image information but often reduce size less.
Related tools
Frequently asked questions about image compression
Which formats can I use?
JPG, PNG and WebP are supported.
Can I change image size?
Yes. You can set maximum width and height while keeping the aspect ratio.
What happens to transparent PNGs with JPEG?
Transparent areas receive a selectable background, white by default.
Is metadata removed?
Yes by default. EXIF, GPS and camera data are not exported.