How to Compress an image

Compress JPG, PNG, and WebP images with adjustable quality settings. See file size savings before downloading. Private, browser-based, no upload.

4 min read Image Compressor Free, no signup required

Quick start

Image Compressor — Compress JPG, PNG, and WebP images with adjustable quality settings.

Get started in under two minutes:

  1. Upload your image
  2. Adjust the quality slider
  3. Review the compressed preview
  4. Download the compressed file
Open Image Compressor

Step-by-step instructions

Follow these steps to get the best results from Image Compressor:

1

Upload your image

Click the upload area or drag and drop your JPG, PNG, or WebP file into the dashed box. You can add multiple images for batch compression.

Tip: The original file is never modified — compression is applied to a downloaded copy only.
2

Adjust the quality slider

Use the Quality slider (0-100) to control the compression level. Values between 70 and 85 give good visual quality with significant file size reduction.

Tip: Check the before/after file size display beneath the preview to judge how much size you are saving.
3

Review the compressed preview

The right panel shows a preview of the compressed image. Zoom in to check for compression artefacts, especially in areas with fine detail or smooth gradients.

Tip: If the preview looks blocky or blurry, raise the quality slider and try again.
4

Download the compressed file

Click "Download" to save the compressed image. The file is named with "-compressed" appended to the original filename.

Tip: For batch downloads, click "Download All" to get a ZIP archive containing all compressed images.
Open Image Compressor

Frequently asked questions

Are my images uploaded to a server?

No. Image Compressor processes everything locally in your browser using JavaScript. Your images never leave your device, making it safe for confidential or sensitive content.

Is Image Compressor free to use?

Yes — Image Compressor is completely free with no account or signup required. All core features are available immediately.

Which image formats are supported?

JPG, PNG, WebP, and GIF are the most widely supported formats. The exact input and output formats depend on the operation.

Does Image Compressor work on mobile devices?

Yes — Image Compressor works on smartphones and tablets through any modern mobile browser. The interface adapts to smaller screens automatically.

Ready to compress an image?

Image Compressor is free to use. No account or signup required.

Open Image Compressor