Compress PNG

Best tool to compress PNG images online while preserving image quality



选择文件
  • 从设备
  • 来自 Dropbox
  • 来自 Google Drive
  • 从 OneDrive
  • 来自网址
最大文件大小 1GB. 升级更多 报名 了解更多

继续操作即表示您同意我们的使用条款。


Lower values give better compression (at the cost of image quality)
4
Slower speeds yield better compression and quality but take more time to analyze.
256
You can reduce the number of colors to compress PNG files further
Keep original size
Downscale/resize images to save even more on file size



How to Compress a PNG?

  1. Click the “Choose Files” button to upload your PNG files.
  2. Click the "Compress Now" button to start compressing.
  3. Once the status change to "Done" click the "Download PNG" button.

Best Quality

Compress PNG images by up to 80% while preserving image quality and transparency.

Advanced PNG Compression

Use our Advanced Settings (optional) to adjust various settings such as compression level and speed.

Free & Secure

Our Compress PNG tool is free and works on any web browser. Plus, all files are protected with 256-bit SSL encryption and deleted automatically after a few hours. Your file security and privacy are guaranteed.



How does it work?

Our PNG compressor converts 32-bit truecolor PNGs with alpha channel to palette PNG (8-bit indexed color image). This stripping of colors by combining similar colors, while lossy, is often not noticeable to the human eye [1]. We also strip image metadata to further reduce PNG file size. Additionally, you can also resize your PNGs to further reduce their file size [2].


Does FreeConvert provide other file compressors?

Yes. Check out Compress JPEG, Video Compressor, GIF Compressor, PDF Compressor, and Image Compressor. Here is a great free image resizer tool.


Sources

[1] - Even Faster Web Sites: Performance Best Practices for Web Developers

[2] - Image Resizer


Here is a list of image tools to further edit your images.

  1. Image Resizer - Quick and easy way to resize an image to any size
  2. Crop Image - Use this tool to crop unwanted areas from your image
  3. Image Compressor - Reduce image files size by up to 80 to 90% using this tool
  4. Color Picker - Quickly pick a color from the color wheel or from your image online
  5. Image Enlarger - A fast way to make your images bigger
  6. Collage Maker - Create a beautiful photo collage from your photos

您的数据，我们的首要任务

在 FreeConvert，我们不仅提供文件转换服务，更致力于保护文件安全。无论您转换的是图像、视频还是文档，我们强大的安全框架都能确保您的数据始终安全无虞。凭借先进的加密技术、安全的数据中心和严密的监控，我们全方位保障您的数据安全。

详细了解我们对安全的承诺
  • SSL/TLS Encryption SSL/TLS
    加密
  • Secured Data Centers 安全数据
    中心
  • Access Control and Authentication 访问控制和
    验证

想要转换大文件而不需要队列或广告吗？

立即升级

报名