Image Tools

Compress Image

Reduce an image file size with visible quality controls and a before-and-after comparison.

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Browser-only processingYour files are processed locally in your browser and are never uploaded to our servers.

Browser-only processing

What Compress Image does

Lower quality generally produces a smaller file, while image content and output format determine how much reduction is possible.

Supported formats or input: Input: JPG, PNG and WebP. Output support depends on the format and browser encoder.

How to use Compress Image

  1. Choose an image.
  2. Set the output format and quality.
  3. Compare the preview and file size, then download.

Example and processing method

Example: For a web photo, try WebP at 80% quality and inspect text, faces and gradients before saving.

The browser decodes and re-encodes the image with the selected quality; no remote compression service is used.

Common mistakes and limitations

Common mistake: Repeatedly compressing an already lossy image can create visible artifacts. Keep an original master file.

PNG quality behaves differently from JPEG quality, and some images may not become smaller after re-encoding.

Privacy

Compression and comparison occur on your device.

No registrationLocal processingClear output

Related tools

Crop ImageCrop, rotate and flip images with popular aspect ratios.Resize ImageResize images by pixels or percentage without uploading.Image Format ConverterConvert JPG, PNG and WebP images locally.Images to PDFCombine up to 20 images into a downloadable PDF.Social Media Image ResizerResize images for common social media placements.

Frequently asked questions

What quality setting should I use?

There is no universal value; start around 75–85 for photographs and inspect the result.

Why is my compressed file larger?

The source may already be optimized, or the chosen format may encode that image less efficiently.