Drag your .G4 file or use the browse button.
Select the desired output format from the dropdown list.
Click "Convert" and download your converted file once ready.
The G4 file extension is primarily associated with Group 4 fax images, which represent a compressed monochrome image format commonly used in fax machines and document imaging. These files store bitmap images using a compression method designed to reduce the size of scanned documents without losing quality. Interestingly, Group 4 compression was developed to improve transmission speeds over telephone lines by efficiently encoding black and white images. This format remains relevant in various archival and legal applications due to its lossless nature.
Technically, the G4 format uses a run-length encoding algorithm optimized for black-and-white images, focusing on encoding the lengths of consecutive black and white pixels. It supports only bi-level (monochrome) images, which means each pixel is either black or white, without any grayscale or color information. The compression is lossless, ensuring that no detail is lost during the encoding process, which distinguishes it from many modern image formats that use lossy compression. This format is often encapsulated within TIFF files, marked with the compression tag value '4' indicating Group 4 compression.
Group 4 compression is a refinement of the earlier Group 3 fax standard and is known for being a two-dimensional compression method, making it more efficient for typical text documents. Files using the G4 format often appear as TIFF files using Group 4 compression, so the extension might sometimes be seen in connection with TIFF images. The format’s strength lies in its ability to maintain image fidelity while significantly reducing file size, which was crucial before high-speed internet became widespread. Even today, it’s favored in industries that require precise document reproduction.
Drag your file here to to upload.
Up to 250MB
