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Image Compressor

Make photos and images smaller without losing visible quality.

  • 100% free
  • Compress to an exact size (KB)
  • Images never leave your device

Drop an image to compress

Drag and drop, paste, or choose a file. Files stay on your device.

Last reviewed by the OnlineToolPro team

What is the Image Compressor?

Big images slow down websites and fill up email attachments. This tool re-saves your image at a quality you choose — usually a fraction of the size with no visible difference — and can shrink its dimensions too.

How it works

How to use the Image Compressor

3 simple steps. No experience needed.

What can you use it for?

  • Make photos small enough to email or upload.
  • Speed up a website by shrinking its images.
  • Save space on your device.

JPG or WebP?

Both are lossy formats built for photos. WebP is usually smaller at the same visual quality and is supported by every current browser. Choose JPG when the image is going somewhere older, like some email clients, print services or upload forms that only accept JPG.

Getting the smallest file

Quality is the biggest lever: 70–80% is usually indistinguishable from the original. If the image is much larger than it will be displayed, reduce its dimensions too — halving the width and height cuts the pixel count to a quarter.

Supported files

You can drop JPG, PNG, WebP, GIF, BMP or AVIF images. The result is saved as JPG or WebP. Animated GIFs are saved as a single still frame.

FAQ

Frequently asked questions

What quality should I use?

Around 70–80% is a good balance for photos. Check the preview — if it looks the same, it's fine.

Why did my PNG get bigger?

PNGs of graphics are often already small. Try WebP, or keep the original.

Are my images uploaded?

No. Compression happens in your browser using the Canvas API.

How do I get an image under 100 KB (or 50 KB, 20 KB)?

Choose “To a file size” and enter the limit. The tool finds the highest quality that fits and only makes the picture smaller if quality alone isn't enough. It counts 1 KB as 1,000 bytes, so the file also fits forms that count 1 KB as 1,024 bytes.

Does compressing remove photo metadata?

Yes, whenever the image is re-saved: the new file is drawn without the original EXIF data, such as camera details and GPS location. (If a photo is already under your target size, the original is kept unchanged.)

Related guides

Step-by-step help for getting more out of the image compressor.

All guides

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