Free PNG Compressor

Compress PNG Images Online

Reduce PNG file size while keeping transparency and crisp graphics. Compress multiple PNG images, compare file sizes, and download optimized files instantly.

Drop your PNG images here

or choose PNG files from your device

Choose PNG Images

Color Optimization Balance image quality and file size

High

Maximum Quality Balanced Smaller File

Choose stronger optimization when you need a smaller PNG. Transparency is preserved.

Try to reach a specific file size

Useful when an upload form has a maximum file-size requirement.

Compressed PNG Images

✓

Free No signup required

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Browser-based Process locally

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Batch PNG Multiple files

Transparency Alpha preserved

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Why Compress PNG?

Make PNG files smaller without unnecessary steps

PNG is excellent for transparency, screenshots, logos, icons, and sharp graphics, but these files can become unnecessarily large.

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Reduce PNG file size

Optimize PNG color data and encoding to create a smaller file for websites, uploads, storage, and sharing.

Keep transparency

Transparent PNG graphics remain transparent, making the tool suitable for logos, icons, UI assets, and overlays.

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Compress multiple PNGs

Add several PNG images and process them together instead of repeating the workflow for every file.

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Optimize colors

Reduce unnecessary color detail when the image can tolerate it, helping suitable graphics become considerably smaller.

Work toward a KB limit

Use the optional target-size workflow when a website, application, or form has a maximum file-size requirement.

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Fast workflow

Upload, optimize, compare the resulting file size, and download your PNG without installing desktop software.

How It Works

How to compress a PNG online

Reduce PNG file size in three simple steps.

Upload PNG images

Drag and drop your PNG files into the tool or choose them from your device. Multiple files can be added together.

Choose optimization

Select how strongly the tool should optimize color information. Use a target size when you need to meet a specific file-size limit.

Compress and download

Compare the original and optimized sizes, check the result, and download your smaller PNG image.

Compress PNG images online

PNG is a popular image format for graphics that need sharp edges, transparent backgrounds, or reliable lossless image data. Logos, icons, screenshots, interface graphics, illustrations, and other web assets are commonly saved as PNG files.

The downside is that PNG files can become large, especially when they contain many colors, gradients, high-resolution screenshots, or unnecessary image data. Compressing PNG images can reduce the file size and make them easier to upload, store, and deliver on the web.

PNG compression works differently from JPG compression.

A JPEG quality slider does not directly apply to PNG. PNG optimization can involve lossless encoding improvements or, when appropriate, reducing the number of colors used by the image. Stronger color reduction can create smaller files but may affect gradients, shadows, or exact colors.

Why should you compress a PNG?

Large PNG files can add unnecessary weight to websites and can also cause problems when an upload form has a strict file-size limit. Compressing a PNG is useful when you want to keep the PNG format but make the file smaller.

Reduce the size of PNG website graphics.
Optimize logos and transparent images.
Make screenshots easier to upload or share.
Reduce storage requirements for PNG assets.
Prepare PNG files for forms with size restrictions.
Optimize icons and interface graphics for web delivery.

Can PNG files be compressed without losing quality?

Yes, PNG supports lossless compression, which means image data can be encoded more efficiently without intentionally changing the visible pixels. However, lossless compression does not guarantee a dramatic reduction in every PNG file.

If a PNG is already optimized, there may be little additional size to remove without changing colors, dimensions, or the image format.

What is PNG color reduction?

Color reduction decreases the number of distinct colors stored in a PNG. This can be particularly effective for logos, icons, illustrations, screenshots, and other graphics that do not require millions of distinct colors.

Images with smooth gradients or photographic detail can be more sensitive to color reduction. Always review the compressed result before using it as a final asset.

Why are some PNG files difficult to compress?

PNG compression results depend heavily on the image itself. A simple logo with large flat areas may compress much more effectively than a detailed screenshot or a photograph saved as PNG.

A photograph is often not an ideal PNG use case. If transparency is not required, converting a photographic PNG to JPG or WebP can often produce a smaller file.

Compress PNG vs convert PNG to JPG or WebP

Compression and format conversion solve different problems. If you need to preserve transparency or crisp graphic edges, keeping PNG is often the right choice. If you are optimizing a photograph and do not need transparency, JPG or WebP may be a better fit.

Choose The Right Approach

Compress PNG or change the image format?

The best option depends on what the image contains and where you need to use it.

Option	Best for	Main consideration
Compress PNG	Logos, icons, screenshots, transparent graphics	Keeps PNG format and transparency
Convert PNG to JPG	Photographs without transparency	Smaller files but no transparency
Convert PNG to WebP	Modern web image delivery	Requires WebP support in the destination workflow
Resize PNG	Oversized images with unnecessary dimensions	Changes pixel dimensions

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FAQ

Frequently asked questions

Common questions about PNG compression, transparency, quality, and file size.

How do I compress a PNG image?

Upload your PNG image, choose the desired color optimization level, and click Compress PNG Images. Review the original and optimized file sizes before downloading.

Can PNG images be compressed without losing quality?

PNG supports lossless compression, but the amount of size reduction varies by image. Lossless optimization keeps the image data intact. Stronger color reduction can create smaller files but may change some colors or gradients.

Does compressing PNG remove transparency?

No. The PNG output keeps an alpha channel so transparent areas can remain transparent. Always preview the result before using it in a production design.

Can I compress multiple PNG images at once?

Yes. Select multiple PNG files or drag several files into the upload area and process them together.

Why is my PNG still large after compression?

Some PNG files are already well optimized, while photographs, detailed screenshots, gradients, and high-resolution graphics may contain information that is difficult to reduce without changing the image.

Should I use JPG or WebP instead of PNG?

It depends on the image. PNG is often a good choice for transparency, logos, screenshots, and graphics with sharp edges. For photographs without transparency, JPG or WebP can often produce smaller files.

Can I compress PNG to a specific KB size?

You can enable the target-size option and enter the approximate KB limit. Some PNGs cannot reach very small targets without stronger color reduction or resizing, so always check the final output visually.

Does PNG compression change image dimensions?

The normal compression workflow focuses on reducing file data rather than changing width and height. If you need smaller pixel dimensions, use the image resizer.

Ready to reduce your PNG file size?

Upload your PNG images, optimize them for a smaller file size, and download the results in seconds.

Compress PNG Now