Dokdoin - Convenient & Safe Web Tools

Image Format Converter

The Image Format Conversion Tool is a privacy-first conversion tool that processes the entire process 100% securely within the browser without the need to download complex dedicated programs or the worry of your precious image assets being leaked by transmitting them to servers on the internet.

Drag and drop the image to convert here
Or click to select a file or paste an image from clipboard (Ctrl+V).
Target format and conversion setting options
Compression quality (Quality - excluding PNG)
Target format to convert (Format)

Image Format Conversion Key Features Guide and Tips

The Image Format Conversion Tool is a privacy-first conversion tool that processes the entire process 100% securely within the browser without the need to download complex dedicated programs or the worry of your precious image assets being leaked by transmitting them to servers on the internet.

Key Features

  • JPEG (JPG) Format: Suitable for purposes where popular compatibility is most important, and prevents the phenomenon of breaking messily by filling empty backgrounds with White when converting PNGs containing transparency.
  • PNG Format: Ideal for cases where the alpha channel (transparent background) must be preserved, or for icons, design draft conversions, etc., where lines and letters must remain sharp without blurring.
  • WebP Format: A high-efficiency format created by Google to improve web performance, which can drastically lighten the file size by up to 30~50% or more while minimizing original damage.

How to Use

  1. Quality Setting Control: Since PNG is a Lossless compression format, you cannot specify the compression Quality during conversion, so the settings window automatically becomes a translucent disabled state.
  2. Convenient Input Usability: You do not need to double-click the save quality number; lightly tapping (clicking) instantly selects the whole state so you can quickly type and apply your desired quality figure.

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