Automatic image compression for WordPress

The free LightPIX WordPress plugin compresses every image the moment it is uploaded to your Media Library — PNG, JPEG and WebP — shrinking file sizes by up to 80% with no visible quality loss. There is nothing to configure: install it, and every new image is optimized automatically.

Smaller images mean faster pages, better Core Web Vitals and higher search rankings — without you lifting a finger. You can also bulk-compress the images already in your library. Prefer to compress a one-off image by hand? Use the LightPIX web compressor above.

Install the free plugin →

How to compress WordPress images in 3 steps

  1. 1

    Add your images

    Drag & drop, click to browse, or paste a screenshot. PNG, JPEG and WebP are supported — up to 16 MB each and up to 20 at once.

  2. 2

    Adjust the quality

    Move the quality slider if you want a smaller file or higher quality. The default already balances size and clarity.

  3. 3

    Compress & download

    Click Compress all, then download each image or the whole batch as a single ZIP.

Frequently asked questions

Is the WordPress plugin free?

Yes — the LightPIX WordPress plugin is free to install and use.

Does it compress existing images?

It compresses new uploads automatically, and supports compressing your existing Media Library images too.

Will it slow down my site?

No — compression happens on upload, so your visitors only ever receive the smaller, faster images.

Is LightPIX free?

Yes — LightPIX is completely free, with no signup, no watermark and no monthly limits.

Are my images private?

Yes. Images are sent over HTTPS, compressed, and deleted immediately after — nothing is stored on our servers.

How much smaller will my images get?

Typically up to 80% smaller, depending on the image, with no visible loss in quality.

Can I compress multiple images at once?

Yes — compress up to 20 images in one batch and download them individually or as a single ZIP.

Do I need to install anything?

No — it runs in your browser. For automatic compression on your website, there is also a free LightPIX WordPress plugin.

Does it work on mobile?

Yes — LightPIX works in any modern browser on both desktop and mobile.

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