How do I compress images without WordPress?

1 min read · Last updated June 2026

Use the free compressor on the SlashImage website. Drag your images onto the page and download the smaller versions - no account, no plugin, nothing to install.

Compress in your browser

  1. Open the Compress tool on the SlashImage website.
  2. Drag and drop your images onto the page, or click to choose them.
  3. Download the optimized results.

Limits

Without an account, you can compress up to 10 images a day, up to 10 MB each. The count resets daily. Signing in for a free account raises the daily limit to 100; paid plans remove the daily cap.

When to use the plugin instead

The web tool is great for one-off images. To optimize a whole WordPress site automatically - new uploads and your existing library, served as WebP and AVIF - use the plugin instead. See How do I set up SlashImage?.

See also

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