Compress PNG Images Online Free

Reduce PNG file size while preserving transparency and quality. See pixel-level before/after comparison and EXIF metadata — all processed in your browser.

Processed entirely in your browser

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Why this tool is different: Your images are processed 100% in your browser — nothing is uploaded. Plus, get a pixel-level diff view, interactive slider comparison, and target file size mode that other tools don't offer.

Drop images here or click to browse

Supports JPEG, PNG, WebP, BMP — up to 100 MB per file

Frequently Asked Questions

How do I reduce PNG file size without losing quality?

Our tool applies lossless and near-lossless compression to PNG files. You can adjust the quality slider to find the perfect balance between file size and visual quality. Even at lower settings, PNG files retain their transparency.

Does compressing a PNG remove the transparent background?

No. Our PNG compressor preserves alpha channel transparency. Your compressed PNG will maintain the same transparency as the original.

What is the best quality setting for PNG compression?

For most uses, 80-90% quality provides excellent results with significant size reduction. For screenshots and graphics with text, 85% or higher is recommended to maintain crisp edges.

Can I compress PNG files larger than 10MB?

Yes! Since all processing happens in your browser, there is no upload size limit. Your device's memory is the only constraint, and most devices handle files well beyond 10MB.

Are my PNG images kept private?

Yes. Your images are never uploaded to any server. All compression runs locally in your browser using JavaScript. When you close the tab, the images are gone from memory.