Image Compressor
Drag an image here or click to choose
Or paste an image with Ctrl+V
Max 50 MB · 100 MP
- Upload your image.
- Choose a mode: by quality, adjusting how much loss you accept, or by target size, stating how many KB the file should be.
- Set the output format and the maximum dimension if you also want to shrink the measurements.
- Compare the before and after size and download the result.
Quality mode is direct: you pick a value between 0.1 and 1.0 and compression is applied once. It is predictable for batches with a consistent look.
Target size mode works backwards: you state how many KB you want and the compressor searches for the quality that lands near it. That is the right mode when a hard limit exists — an email attachment, a form that rejects anything over 2 MB, an upload requirement.
Reducing the maximum dimension usually saves more than lowering quality. A photo 4000 pixels wide displayed in an 800 pixel slot carries four times more data than needed with no visible gain.
JPEG is the standard for photography. Lossy compression discards detail the eye barely notices, and the result is far smaller than an equivalent PNG.
WebP delivers the same visual level in files typically 25% to 35% smaller than JPEG, and every current browser supports it. It is the best web choice when legacy compatibility is not a constraint.
PNG is for images with transparency, text, screenshots and flat-colour artwork. Compressing a screenshot as JPEG produces visible mush around the letters.
Lossy JPEG and WebP discard information for good. Recompressing an already compressed file accumulates degradation — each pass removes a little more.
The correct practice is always to start from the original. Keep the source file and generate compressed versions from it, never from another compressed version.
Metadata such as EXIF, which includes camera model and sometimes GPS coordinates, is usually stripped in the process — which is good for privacy when publishing photos.
All processing runs in your browser: the image is never uploaded anywhere.
Frequently asked questions
No. Compression uses your browser’s own processing and the file never leaves your computer.
Between 0.7 and 0.85 is usually indistinguishable from the original for photography, with a large size reduction. Below 0.6 artefacts start to show in gradient areas.
Yes. Loss is cumulative and irreversible. Always compress from the original file, never from an already compressed version.
PNG uses lossless compression, so there is little to gain. For photography, converting to JPEG or WebP saves far more. Keep PNG only when you need transparency or crisp text edges.
EXIF metadata usually does not survive processing, which strips camera model and coordinates. If privacy is critical, verify the output before publishing.