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CompressJPG

Free Compressor for JPG images

Make JPEGs smaller without quality loss. Everything runs in your browser and your photos are never uploaded.

Your images are processed on your device and never uploaded.

All image tools

Every tool is free, works on phones and computers, and processes images on your own device.

Compress

Make JPG, PNG, WebP and HEIC files smaller, or hit an exact size limit for forms and uploads.

Resize & edit

Change dimensions, crop, or make a file bigger to meet a minimum size.

Convert

Turn HEIC, PNG and WebP images into widely supported JPG files.

Private by design

Images are processed on your device with WebAssembly. Nothing is uploaded, stored or shared.

Fast MozJPEG engine

The same encoder used by Google Squoosh, often 50–80% smaller files with no visible difference.

One editor for everything

Crop, rotate, resize, compress and convert in one place, with a live preview and undo.

How to compress JPG images

  1. 1

    Drop your photo into the box above, click to browse, or paste it with Ctrl+V.

  2. 2

    Use the Resize tab to resize large photos even further.

  3. 3

    Check the new size under the image, set target size if required, then download.

Why compress JPEG images?

Photos straight from a phone or camera are often 3–10 MB. That is far more than you need for websites, email or chat. Large images slow down pages, fill up storage and can be rejected by upload forms.

JPEG compression removes detail your eyes barely notice. At a quality of around 75, most photos shrink by 60–80% and look the same on screen. We use MozJPEG, an optimized encoder that produces smaller files than standard JPEG at the same quality.

Because everything happens on your device, there is no upload wait and no privacy risk. Camera details and GPS location (EXIF metadata) are removed, which saves even more space.

Frequently asked questions

Is CompressJPG free?

Yes, completely free to use.

Are my images uploaded anywhere?

No. Images are decoded and re-encoded inside your browser.

What quality setting should I use?

75 is best for photos on the web. Use 85–90 for print or very detailed images, and reduce further when file size matters most.

Does compression remove EXIF data?

Yes. Metadata such as camera model and GPS location is removed. Orientation is applied to the pixels first, so photos stay upright.

Will the compressed file ever be larger than the original?

No. If re-encoding a JPEG would make it bigger, you get the original file back unchanged.