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SmaftyTools

Image Compressor

Compress images to WebP or JPEG with adjustable quality and see the size savings instantly. 100% local — photos never leave your device.

Compression runs locally with the HTML5 canvas — your image is never uploaded.

About Image Compressor

The Image Compressor shrinks image file sizes by re-encoding them as WebP or JPEG at a quality level you choose — often cutting 60–90% off a photo's size with little visible difference. The before/after sizes and percentage saved are shown so you can find the sweet spot.

Smaller images mean faster websites, quicker uploads and less storage. WebP typically beats JPEG by 25–35% at equivalent quality and is supported by every modern browser.

Compression runs entirely on your device with the HTML5 canvas — private photos are never uploaded to a server, and there are no file limits or queues.

How to Use the Image Compressor

  1. Choose an image from your device.
  2. Set the quality (75 is a good default) and pick WebP or JPEG.
  3. Click Compress, check the preview and size savings, then download.

Features

  • WebP and JPEG output with adjustable quality
  • Shows exact size savings before you download
  • Keeps original pixel dimensions
  • 100% local processing — no uploads

Frequently Asked Questions

What quality setting should I use?

70–80 is visually near-lossless for most photos. Go lower (50–60) for thumbnails and previews where small size matters more than fine detail.

Does compressing lose transparency?

JPEG doesn't support transparency — transparent areas become white. WebP preserves transparency, so choose WebP for logos and graphics with alpha channels.

Is the Image Compressor free?

Yes, the Image Compressor is completely free with no usage limits. No signup, no account and no installation required.

Is my data safe?

Yes. All processing happens locally in your browser using JavaScript — nothing you type is uploaded or stored on our servers.

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