How does image compression work?

Our tool uses the Canvas API to re-encode your image with adjustable quality settings. Lower quality means smaller file sizes with some visual loss.

What image formats are supported?

We support JPEG, PNG, and WebP formats for both input and output. You can also convert between formats during compression.

How much can I reduce the file size?

Depending on the quality setting and format, you can typically reduce file sizes by 50-90%. JPEG and WebP offer the best compression ratios.

Will compression affect image quality?

Some quality loss occurs with lossy compression (JPEG, WebP). The quality slider lets you balance file size and visual quality. PNG compression is lossless.

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Image Compress

Reduce image file size while maintaining quality

Your files never leave your browser

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Drop your image here or click to browse

Supports JPEG, PNG, WebP and more

What is Image Compress?

Image Compress reduces the file size of your images while preserving visual quality. It supports JPEG, PNG, and WebP formats, and all compression runs entirely in your browser using the Canvas API -- your images are never uploaded to any server.

Key Features

Adjustable Quality

Fine-tune the compression level with a quality slider to find the perfect balance between file size and visual fidelity.

Format Conversion

Optionally convert between JPEG, PNG, and WebP during compression to take advantage of each format's strengths.

100% Browser-Based

All processing happens locally using the Canvas API. Your images never leave your device, ensuring complete privacy.

Common Use Cases

Optimize images for websites and blogs to improve page load speed and Core Web Vitals scores. Reduce photo file sizes before uploading to social media, email, or messaging apps with size limits. Compress product images for e-commerce listings to speed up catalog browsing on mobile devices.

How It Works

Upload Image

Drag and drop or click to select an image

Adjust Quality

Set the quality level and output format

Download

Download the compressed image

Frequently Asked Questions

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Last updated: Feb 27, 2026