BMP to PNG

Batch Convert BMP files to PNG files for free online.BMP to PNG Converter for free.Also, you can resize the PNG file , and custom output names and width/height.

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This tool converts BMP to PNG completely free and without any functional limitations. Since it is based on the browser API, the processing speed is the fastest because all files are processed locally on your device and are not uploaded to our server.
About BMP files
BMP (Bitmap) is an uncompressed raster image format developed by Microsoft, storing pixel data without compression to maintain perfect image quality. While preserving original image details, BMP files are significantly larger than compressed formats like JPEG or PNG. Though rarely used for web graphics due to their size, BMP remains valuable for specific applications requiring lossless quality and simple structure.
About PNG files
PNG (Portable Network Graphics) is a lossless image format that supports transparency and high-quality graphics. Ideal for web graphics, logos, and images requiring sharp details. It supports 24-bit color and alpha channels for smooth transparency effects, making it perfect for images that need to blend seamlessly with different backgrounds.

Batch Convert BMP to PNG Online

How does it convert to PNG?

With this converter , you can convert one or multiple BMP file(s) to multiple sizes of PNG files, and resize the PNG files with width/height in the Options. Open the Options dialog , to set the new width and height as desired. You can also upload a directory for batch converting.

  • Save Name : You can set {name} , {width} , {height} to resize the new PNG image files. If multiple files need to convert , you must set {width} and {height} tags to distinguish files of different sizes. {name} is same as the filename of the source file.
  • Width and Height : You can customize the width/height of PNG files. The maximum of width/height is unlimited.
  • Example settings:
  • Save Name :

    {name}_{width}_{height} .png

  • Width and Height

    1000 X 1000

  • Width and Height

    1500 X 1500

  • If you upload a pic.bmp , 2 PNG files will be converted and named as below :
  • pic_1000_1000.png Width and Height: 1000x1000
  • pic_1500_1500.png Width and Height: 1500 X 1500
  • Quality: You can set a value from 0 to 100 to control the quality of the converted PNG file. A higher value means clearer images but larger file sizes. This feature can help reduce the PNG image file size.
  • You can click Save All button to save them to a local directory without downloading.