THM to G3 Converter

Convert THM to G3 online quickly and easily. Just upload your file, convert it, and download the G3 in seconds.

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What is THM ?

THM is a small JPEG thumbnail that Canon and other cameras save next to each video, showing its first frame.

THM format  ▶

What is G3 ?

The G3 file format, primarily associated with fax image files, is a compression format used to store black and white images. It is designed to efficiently compress data while maintaining the quality necessary for fax transmission.

G3 format  ▶

How to convert THM to G3

  1. Upload your THM file
    Drag and drop your THM file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
  2. Choose G3 as output format
    The converter is preset to G3, but you can select any other output format before converting.
  3. Adjust settings (optional)
    If you like, tweak output options such as resolution, quality, or compression before converting.
  4. Convert the file
    Click the 'Convert' button. The conversion takes only a few seconds.
  5. Download your converted file
    Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.