Browser-based tool

PNG Compressor

Compress PNG files fully in your browser. All processing stays local on your device.

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Processed locally in your browser. Paste screenshots quickly with Ctrl/Cmd+V.

Drop PNG files (or folders on Chromium) here. Click columns to sort Shift/Ctrl selection FS Access: checking...
0 files
File Name Path Result Size Compressed Saved Saved %
Ready.

This app does not include GPL pngquant/libimagequant. Compression uses an offline quantization and indexed PNG pipeline.

What this tool does

PNG Compressor reduces PNG file size in your browser and lets you export individual files, batches, or ZIP output.

When to use it

How to use it

  1. Start in Simple mode, then add PNG files, a folder, or paste a screenshot.
  2. Pick the preset that best matches your PNGs.
  3. Run compression, review badges, and download files or a ZIP.

What you can export

Notes and limitations

Privacy

Core compression runs locally in your browser. No upload is required for the main processing workflow.

FAQ

Do I need an account?

No. You can use PNG Compressor without signup.

Can I compress folders?

Yes, on browsers that support folder input and File System Access API features.

Is quality always the same?

Perceived quality depends on color reduction and dithering settings.

Related tools

Last updated: March 8, 2026