Compress Single Image

Select a JPG, PNG, or WEBP image with easy, detailed quality controls.
Compress image files exactly the way you want.
or drop your image here

Getting started tips

  • Related tools If you need to compress multiple images at once, try the Bulk Image Compress tool.
  • Quality settings Start at 75–85%, then reduce in 5–10% increments while watching the preview.
  • More details Scroll down to the Troubleshooting and FAQ sections.

This tool runs 100% in your browser. Your files are never uploaded or stored on our servers.

How to Use the Single Image Compressor Tool

  1. Upload Image

    Select or drag and drop the image you want to compress onto this page.

  2. Set Quality

    Adjust the slider for the desired quality. Lower percentages mean smaller files and lower quality. Use this setting to compress image to your preferred size.

  3. Compare

    Instantly view and compare the original and compressed images on screen. See the file size difference below each image. (The before-after comparison feature is available on desktop only.)

  4. Download

    When satisfied, click Download to save your compressed image instantly.

  5. New Image

    To compress image again, click the arrow button on the left side of the Download button.

Troubleshooting

Why is the file larger after compression?

If the original file is already small or well compressed, you may not see a size reduction. Try converting the image to JPG, converting the image to WEBP, or resizing the image before compressing again.

The download button is greyed out / can’t be clicked — how do I fix it?

This happens when the compressed file is still larger than the original. In that case, the download is disabled.

Why does the image look pixelated or blurry?

If the quality is set too low, the file size drops a lot but visible artifacts appear. Reduce the quality in 5–10% steps until you find the right balance between size and clarity.

Compression makes my device freeze or lag — how can I speed it up?

Because this tool runs entirely in your browser, processing speed depends on your device and the size of the files you compress. Lag is most common on mobile devices and with very large PNG images.

Frequently asked questions (FAQ)

Is this tool safe? Will my files be exposed?

Your files stay in your browser and aren’t sent to any server. All compression runs locally on your device.

What’s the maximum file size?

It depends on your device and browser. Very high-resolution images can be slow or laggy. If that happens, try reducing the pixel dimensions first.

Is there a daily usage limit?

Our single-image compressor is free with no daily cap. Extremely large images may still cause slowdowns.

What’s the difference between “compress” and “resize”?

Compression reduces the file size while keeping the same width and height. Resizing lowers the pixel dimensions (width and height) of the image.

Which file types are supported?

Currently, Calcixo’s single-image compressor supports JPG, PNG, and WEBP. If we add more formats, we’ll update this page.