Jenee

Image Compressor & Optimizer

Compress and optimize image files while maintaining quality. WebP conversion enables significant size reduction.

Drag & drop an image or click to select

Supports JPG, PNG, WebP, and more

WebP offers the most efficient compression. PNG preserves transparency.
※Quality setting does not apply to PNG output (lossless compression)

How to Use

  1. STEP 1
    Select the image files you want to compress (multiple allowed)
  2. STEP 2
    Adjust output format and quality, then run compression
  3. STEP 3
    Download the compressed images
  • Image data is processed only in your browser and not sent to any server
  • Supported formats: JPEG/PNG/WebP (GIF etc. not supported)
  • WebP format can achieve 30-50% smaller file sizes than JPEG

Tips

1

WebP format can achieve 30-50% smaller file sizes with equivalent quality to JPEG.

2

Resizing large images can significantly reduce file sizes.

3

For photos, WebP format with 80% quality provides the best balance.

4

PNG format preserves transparency but results in larger file sizes than WebP.

FAQ

  • QUESTION 1

    When would you use this?

    It's widely used for improving website speed, email attachments, saving storage, and optimizing before posting to SNS.

  • QUESTION 2

    How much quality is preserved?

    Default (80%) keeps almost no visible degradation. Adjust as needed.

  • QUESTION 3

    Can I download all at once?

    Yes, you can download all compressed images as a ZIP file.

  • QUESTION 4

    What image formats are supported?

    Supports JPEG, PNG, and WebP formats. GIF and BMP are not supported.

  • QUESTION 5

    Is my image data safe?

    All processing is done in your browser and images are never sent externally.

  • QUESTION 6

    How many images can I process at once?

    Depends on browser performance, but typically 10-20 images. Split into batches for larger sets.

  • QUESTION 7

    What are the benefits of WebP format?

    WebP is a next-generation image format developed by Google that achieves 30-50% smaller file sizes with equivalent quality to JPEG.

  • QUESTION 8

    What if I also need to resize images?

    Please use the Image Resizer tool separately. You can resize first, then compress for maximum size reduction.

  • QUESTION 9

    What's the typical compression ratio?

    WebP conversion can achieve 30-50% size reduction.

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Image Compressor & Optimizer | Jenee