Compress JPG, PNG and WebP images online for free. Reduce image file size, adjust compression quality, preview the result, and download your compressed images directly in your browser.
Choose Images to Compress
Drag and drop your images here, or select files from your device.
Supported formats: JPG, JPEG, PNG and WebP
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What Is an Image Compressor?
An image compressor reduces the amount of storage space required by an image file. Compression removes or reduces image data while trying to preserve acceptable visual quality.
A smaller image file loads faster, uses less storage, and requires less data to transfer. This makes image compression useful for websites, blogs, online stores, social media, email attachments, and documents.
How to Compress an Image
- Select one or more JPG, PNG or WebP images.
- Choose an output format or keep the original format.
- Move the quality slider to your preferred compression level.
- Click Compress Images.
- Compare the original and compressed file sizes.
- Download individual images or use Download All.
What Does Compression Quality Mean?
The quality setting controls how much image information is retained when the browser creates a JPG or WebP image.
| Quality | Typical Result | Best Use |
|---|---|---|
| 90 to 100% | High visual quality and larger files | Photography and important graphics |
| 75 to 89% | Good balance between quality and size | Websites and general use |
| 50 to 74% | Smaller files with more visible compression | Web images where file size matters |
| 10 to 49% | Much smaller files with stronger quality loss | Thumbnails and low-bandwidth uses |
The exact file-size reduction depends on the original image, dimensions, format, colors, details, and compression settings. A 75% quality setting does not mean the resulting file will be 25% of the original size.
JPG vs PNG vs WebP
| Format | Best For | Transparency | Compression |
|---|---|---|---|
| JPG | Photos and detailed images | No | Lossy |
| PNG | Graphics, screenshots and transparent images | Yes | Lossless |
| WebP | Websites and modern browsers | Yes | Lossy or lossless |
Why PNG Files Sometimes Do Not Get Much Smaller
PNG uses lossless compression, so the quality slider does not work the same way as it does for JPG or WebP. Re-encoding a PNG as PNG might produce only a small reduction in file size.
If a photographic PNG is too large, converting the image to JPG or WebP often produces a much smaller file. JPG is useful for photographs. WebP is a strong option for websites when browser compatibility is not a concern.
Image Compression vs Image Resizing
Compression and resizing solve different problems.
- Compression reduces file size while keeping the image dimensions unchanged.
- Resizing changes the width and height of an image.
- Format conversion changes the file type, such as PNG to JPG or WebP.
A large photograph measuring 4000 x 3000 pixels might still be too large for a website after compression. Reducing the dimensions with an image resizer can reduce the file size further.
When Should You Compress Images?
- Before uploading images to a website.
- Before adding large photos to blog posts.
- Before sending many images by email.
- When a website loads slowly because of large images.
- When reducing mobile data usage matters.
- When storage space is limited.
- Before uploading product images to an online store.
How Much Should an Image Be Compressed?
There is no single compression level for every image. Start around 75% to 85% quality for JPG or WebP and inspect the result.
If the image still looks good and the file is small enough, keep the setting. If the file is too large, reduce the quality. If the image looks noticeably degraded, increase the quality.
Example of Image Compression
Suppose a JPG photograph is 2.5 MB before compression. After processing, the resulting file is 850 KB.
The image size has been reduced by approximately 66%. The exact reduction depends on the original image and the selected compression settings.
Does This Image Compressor Upload My Photos?
No remote image-processing service is required. The compression work happens in your browser using the Canvas API.
This approach is useful when working with private photos, screenshots, documents, product images, or other files you do not want to send to an external compression service.
Frequently Asked Questions
What image formats does this compressor support?
The tool accepts JPG, JPEG, PNG and WebP images.
Can I compress multiple images at once?
Yes. Select multiple images and process them together. Each compressed file receives its own download button.
Does image compression reduce image dimensions?
No. This compressor keeps the original width and height. Use an image resizer when you need smaller dimensions.
Does the quality slider work with PNG?
PNG uses lossless compression, so the quality setting does not have the same effect as JPG or WebP. Converting a photographic PNG to JPG or WebP often produces a larger reduction.
Is image compression performed online?
The tool interface runs in your browser. Images do not need to be uploaded to a remote compression server.
Will compression make an image blurry?
Strong compression can introduce visible artifacts or reduce detail. Higher quality settings usually preserve more detail.
Which format is best for website images?
JPG works well for photographs, PNG works well for graphics and transparency, and WebP often provides a useful balance between image quality and file size.
Can I compress images on a phone?
Yes. The tool is designed to work in modern mobile browsers as well as desktop browsers.
