ToolsBear ToolsBear

PNG Compressor

Compress PNG images with transparency support.

Select or drag & drop PNG images

PNG only • Up to 50MB each

Compress PNG to a Specific Size

Need to hit an exact portal limit? Choose your target size:

5KB10KB15KB20KB25KB30KB40KB50KB100KB150KB200KB300KB500KB1000KB2MB

Key Features

Compress PNG (.png) images without visible quality loss

Reduce png file size up to 80% with the HTML5 Canvas compressor

100% browser-based — PNG files never leave your device

Preserves transparency while reducing file size

Batch compress multiple PNG images and download as ZIP

Free, no sign-up, no watermarks, no file size limits

How to Compress a PNG Image Online

Step-by-step guide to reduce PNG file size using ToolsBear free browser-based compressor.

1

Upload your PNG image

Click Select or drag & drop and choose your PNG file.

2

Choose compression mode

Use the Quality slider for general compression, or enter a Target Size in KB for an exact file size.

3

Select output format (optional)

Optionally convert to JPEG, PNG, or WebP while compressing.

4

Compress and download

Click COMPRESS. Download the individual file or all files as a ZIP.

Frequently Asked Questions

How does the PNG compressor work?
All compression runs in your browser using the HTML5 Canvas API. Your PNG file is re-encoded at an optimised quality level — nothing is uploaded to a server.
Will my PNG image lose quality?
Some re-compression happens, but the default quality setting keeps the image visually identical for web, email and portal use. You can adjust the slider for more or less compression.
Is this PNG compressor free?
Yes. It is completely free to use online. No registration, no watermarks, and no file size limits.
Can I compress PNG images to an exact KB target?
Yes. Enter a target KB value and the binary-search algorithm will find the exact quality setting to hit it.

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