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Image Compressor

Reduce image file size by adjusting quality. Supports JPEG, PNG, and WebP output. See before/after file size instantly —no uploads, everything runs in your browser.

Image Tools Runs locally No data sent
compress JPEG / PNG / WebP quality file size
Output Format
Quality
Compression level 80%
Smaller file Better quality
File Size
Original
--
→
Compressed
--
Saving: --
Preview
🖼️
Drop image here
or click to browse
JPEG ڔPNG ڔWebP ڔGIF ڔBMP ڔTIFF

What is Image Compressor?

Compress JPEG, PNG, and WebP images online for free. Adjust quality, compare before-and-after file size, and download the smaller result instantly. Runs locally in your browser with no uploads.

Why Use This Image Compressor?

Uploading photos to a cloud-based compressor means sharing your images with a third-party server. This compressor processes everything locally using the HTML5 Canvas API —your images never leave your device. You get a live before-and-after file size comparison and a real-time quality preview so you can find the right trade-off without guessing.

  • No upload: Compression runs in your browser —images stay on your device.
  • Live preview: See the compressed result and file size update as you adjust quality.
  • Before / after comparison: Original vs. compressed size shown side by side.
  • WebP support: Save as WebP for maximum size reduction with modern browser support.

How to Use Image Compressor

  1. Upload the image you want to compress from your device.
  2. Adjust the quality setting while watching the preview and file size update.
  3. Compare the original and compressed versions to find the best balance.
  4. Download the smaller file once the result looks good.

Quick Guides

Image Formats Guide helps you decide whether JPG, PNG, or WebP is the better destination before you compress.

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Understand Image Compression ▾
Example
Input Upload a PNG screenshot (3 MB) and compress to JPEG at 85% quality:
Output Drag the quality slider to find the sweet spot between file size and visual clarity. The preview updates instantly.
Common Use Cases
  • Shrink hero images before uploading to a website
  • Reduce attachment size for email or chat sharing
  • Meet CMS upload limits without opening desktop apps
  • Compare JPEG, PNG, and WebP output sizes quickly
Frequently Asked Questions
Is the image uploaded to a server?

No. All compression happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device.

What quality setting should I use?

For most web images, 75—5% quality strikes the best balance between file size and visual fidelity. For thumbnails or previews, 60—0% is acceptable. Below 50% visible artifacts may appear in photographs.

Why does PNG output have no quality effect?

PNG is a lossless format —quality does not apply. For significant size reduction, switch to JPEG or WebP, which are lossy formats.

Can I compress multiple images at once?

This tool processes one image at a time. For batch compression you would need a desktop application such as ImageOptim or Squoosh CLI.