Free PNG Compressor Online

Optimize PNG files with a browser-based compression workflow designed for fast image cleanup.

PNG Compressor

Compress PNG files with browser-side processing.

🔒 Processes data locally in your browser — input isn’t uploaded or stored.

What This Tool Does

Upload a PNG, apply compression settings, compare sizes, and download the optimized result.

How to Use

Upload an image file.
Set compression quality level.
Run compression and download result.

Common Mistakes

Using lowest quality settings before testing readability.
Comparing compressed files on a single display only.
Skipping format conversion when compression alone is insufficient.

Workflow Notes

Start with moderate compression and adjust until quality/size is balanced.
Check readability on mobile screens before shipping compressed assets.
Use alternate format converters if compression alone is not enough.

Related Tools

Continue with related tools that handle the next step in your workflow.

Image Compressor - Compress images using adjustable quality controls.
PNG to JPG Converter - Convert PNG images to JPG output.
PNG to WebP Converter - Convert PNG images to WebP output.
WebP Compressor - Compress WebP images directly in the browser.
Compress Image - Compress image files with quality controls.

FAQ

Why use PNG Compressor?

Compress PNG files with browser-side processing. It is useful when you need better compatibility, easier sharing, or format-specific editing.

Will the output keep transparency?

PNG supports transparency, and alpha data is preserved when the source image includes it.

Are my images uploaded to a server?

Your input is processed locally in your browser. It isn't uploaded or stored.

What image input does this tool support?

Upload an image, choose quality settings, and export a compressed file.