Free Online Tool

Reduce Image Size Online Free

Reduce image file size online for free. Compress JPG, PNG, WebP, and AVIF images by up to 90%. No signup required. Browser-based, instant download.

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Large image files slow down websites, fill up storage, and exceed email attachment limits. Glopix reduces image sizes by up to 90% using smart compression algorithms that identify and remove image data invisible to the human eye. Works for JPG, PNG, WebP, GIF, and 40+ other formats — directly in your browser with no file uploads to servers.

Step-by-Step Guide

  1. 1

    Upload Your Image

    Click to browse or drag and drop any image onto the compressor. Supports JPG, PNG, WebP, GIF, AVIF, and more.

  2. 2

    Choose Compression Settings

    Use the quality slider (80 recommended for photos) or select a target file size. Choose your output format — WebP produces the smallest results.

  3. 3

    Download Reduced Image

    See the before/after file sizes displayed clearly. Download your reduced image or process another.

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Frequently Asked Questions

How much can I reduce image file size? expand_more

For photos: 60–90% reduction is common with WebP at quality 80. For PNG graphics: 20–40% losslessly. Results depend on the original image content and compression settings.

What's the fastest way to reduce image size for email? expand_more

Convert to JPG at quality 80 and resize to 1200px maximum width. This typically brings photos under the 2MB limit most email clients enforce. Do this at /imagetools/compress/.

Does reducing image size affect quality? expand_more

At quality 80 and above, the quality difference is invisible to the human eye in normal viewing conditions. Only at quality below 70 do artefacts become visible in smooth gradients and dark areas.

Can I reduce SVG file size? expand_more

SVG is a vector format and handled differently — use an SVG optimizer to remove unnecessary paths and metadata. Glopix handles raster formats (JPG, PNG, WebP). For SVG optimization, SVGO is the standard tool.

Reduce Image Size Online Free

100% free. No signup. Works in your browser.

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