Drag & drop images here, or click to browse
JPG · JPEG · PNG · WebP — up to 30 images
Lower = smaller file.
Add images above, choose your settings, then Compress. Everything runs locally in your browser — your images are never uploaded to a server.
How to compress an image
- 1Add your images. Drag and drop your JPG, PNG, or WebP files onto the drop zone, or click to browse and select them.
- 2Choose your settings. Pick an output format, set a maximum dimension to resize large photos, and drag the quality slider to balance size against sharpness.
- 3Compress. Click Compress images. Each file is re-encoded in your browser and you see the new size and percentage saved.
- 4Download. Save each optimized image individually, or use Download all. Nothing is uploaded — the work happens on your device.
Compress images without uploading them
This free image compressor reduces the file size of JPG, PNG, and WebP photos entirely inside your browser. Because it uses the browser's built-in canvas encoder, your images are never uploaded to a server — a safer choice for photos of documents, receipts, or anything personal. Smaller images also help your own website or email load faster.
Quality, format, and resizing
Three settings control the result. Quality (for JPEG and WebP) trades a little sharpness for a much smaller file — 70–85% is usually indistinguishable from the original. Output format lets you convert, for example, a large PNG screenshot to a far smaller JPEG or WebP. Max dimension shrinks the pixel dimensions of oversized photos, which is often the biggest single saving because a phone photo rarely needs to be 4000 pixels wide.
JPEG vs. PNG vs. WebP
JPEG is best for photographs and gives the smallest files at a given quality. PNG is lossless and best for graphics with sharp edges or transparency, but produces larger files. WebP usually beats both for the same visual quality and is supported by every modern browser. If you are unsure, keep the original format or try WebP.
Private by design
No accounts, no watermarks, and no server round-trip. If you also need to turn images into a document, use our JPG to PDF converter, which likewise runs completely in your browser.
Frequently Asked Questions
Are my images uploaded anywhere?
No. Compression runs locally in your browser with JavaScript. Your images are never uploaded, stored, or sent to any server.
How much smaller will my image get?
It depends on the original. Photos often shrink 50–80% at 75–85% quality, and resizing an oversized photo can save even more. Graphics saved as PNG shrink less unless you convert them to JPEG or WebP.
Does compressing reduce image quality?
JPEG and WebP are lossy, so lower quality settings remove some detail, but at 75–85% the difference is usually invisible. PNG output is lossless. You always see the new size before downloading.
Can I convert between formats?
Yes. Choose JPEG, PNG, or WebP as the output format to convert your images, or keep the original format.
Is this image compressor free?
Yes. It is completely free, has no watermark or sign-up, and works on desktop and mobile browsers.