G3 to PSD Converter

Transform G3 files to PSD — free online converter

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Fax Preservation

Preserve fax content by converting G3 to widely supported PSD — future-proof your document archive.

Browser-Based Tool

Convert G3 to PSD directly in your web browser. No desktop software, plugins, or downloads required.

Data Protection

Your G3 files are removed immediately after processing. Converted PSD output is purged within 24 hours.

How to convert G3 to PSD

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose psd or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your psd file right afterwards

About formats

G3 is a monochrome image format based on the ITU-T Group 3 facsimile coding standard (Recommendation T.4), ratified by the CCITT in 1980 as the universal compression method for fax transmission over telephone networks. G3 files contain 1-bit (black and white) image data encoded using Modified Huffman (MH) one-dimensional coding, where each scanline is independently compressed by replacing runs of consecutive white or black pixels with variable-length codewords from a predefined Huffman table optimized for typical document content. The standard also defines an optional two-dimensional coding mode (Modified READ) that encodes each line as differences from the previous line, achieving better compression for pages with vertical redundancy. Standard G3 resolution is 204 pixels per inch horizontally and either 98 (standard) or 196 (fine) pixels per inch vertically, producing the characteristic slightly-stretched appearance of received fax documents. The encoding was carefully optimized for the real-time transmission constraints of 1980s modems operating at 2400 to 14400 bps, where encoding and decoding speed had to match the communication channel rate. One advantage is universal telecommunications compatibility: Group 3 encoding remains the mandatory baseline codec for every fax machine manufactured, ensuring that G3 image data can be transmitted to or received from any fax device worldwide. The format's efficiency for document content is another strength — the Huffman tables were statistically tuned to the run-length distributions found in business documents, and typical pages compress to under 30 KB. G3 files are supported by LibreOffice, ImageMagick, and fax server software.
Developer: ITU-T (CCITT)
Initial release: 1980
PSD (Photoshop Document) is the native file format of Adobe Photoshop, the industry-standard raster image editor first released on February 19, 1990. PSD files preserve the complete editing state of a Photoshop project: all layers (raster, text, adjustment, shape, and smart object layers) with their positions, blending modes, opacity, and layer effects; layer masks and vector masks; alpha channels; spot color channels; paths; guides; slices; and the full undo history. The format supports images up to 30,000 x 30,000 pixels (PSB, the large document format, extends this to 300,000 x 300,000) in color modes including RGB, CMYK, Lab, Grayscale, Indexed, Duotone, and Multichannel, at 1, 8, 16, or 32 bits per channel. PSD files use a combination of RLE compression for individual layer data and store composite (flattened) preview images for quick display by applications that cannot parse the full layer structure. The format has become a de facto standard for professional creative workflows far beyond Photoshop itself — photographers, graphic designers, web developers, and video post-production artists exchange PSD files as the working format that preserves creative flexibility. One advantage is the non-destructive editing model: PSD preserves every layer, mask, adjustment, and effect as independently editable elements, allowing creative decisions to be revised at any point without starting over. The format's role as the interchange standard for the creative industry provides another core strength — PSD files can be opened by Adobe Illustrator, InDesign, After Effects, Premiere Pro, as well as Affinity Photo, GIMP, Sketch, Figma, and Photopea, making it the lingua franca of visual design.
Developer: Adobe Systems
Initial release: February 19, 1990

Frequently Asked Questions

Why convert G3 to PSD?

PSD is widely supported by image viewers and browsers — converting from G3 eliminates the need for fax tools.

What opens PSD files?

Open PSD files using Adobe Photoshop, GIMP, Affinity Photo, or Photopea.

Does conversion affect image clarity?

Yes — text and line art from G3 files convert with full clarity. The PSD output retains original sharpness.

Can I convert G3 to PSD for free?

Yes — basic G3 to PSD conversion is free. Premium tiers provide additional throughput and faster processing.

Does the converter support batch processing?

Batch conversion is supported. Upload several G3 files simultaneously and download each PSD result.

Can I use this converter on a Mac?

Yes — the converter runs in any browser on macOS, Windows, Linux, Android, and iOS. Fully cross-platform.