G4 to PS Converter

Online tool — convert G4 to PS format free

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Cloud Conversion

The G4 to PS conversion runs on cloud servers — no strain on your device, no downloads needed.

Format Migration

Migrate G4 files to PS for better accessibility — modern viewers and editors handle PS natively.

Safe Conversion

Your G4 file is removed right after processing. The PS download is auto-deleted within 24 hours.

How to convert G4 to PS

1

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

2

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

3

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

About formats

G4 is a monochrome image format based on the ITU-T Group 4 facsimile coding standard (Recommendation T.6), ratified by the CCITT in 1984 as an improvement over Group 3 for use on error-free digital networks like ISDN rather than analog telephone lines. G4 files contain 1-bit image data compressed using exclusively two-dimensional Modified Modified READ (MMR) coding, where each scanline is encoded as a set of differences (changing elements) relative to the line above it. By eliminating the one-dimensional coding fallback and the end-of-line synchronization markers required by Group 3, G4 achieves 20-50% better compression ratios on typical document pages while producing a simpler, more regular bitstream. The format is most commonly encountered as a compression method within TIFF files (TIFF compression tag 4), where it became the standard archival format for scanned documents in enterprise document management, government records, and legal imaging systems. G4 compression is specified at 200, 300, or 400 dpi depending on the scanning application, with 300 dpi being the most common for archival-quality document imaging. One advantage is exceptional compression efficiency for document content: G4's two-dimensional prediction exploits the strong vertical correlation in text and line art pages, typically compressing a 300 dpi letter-size page to 30-50 KB — roughly half the size of equivalent Group 3 encoding. The format's entrenchment in document management infrastructure is another strength — G4 TIFF is the mandated format for many government digital records systems, court filing systems, and corporate archives, supported by every enterprise imaging platform.
Developer: ITU-T (CCITT)
Initial release: 1984
PS is the standard extension for files written in PostScript, the page description language created by Adobe Systems and first shipped in 1984 with the Apple LaserWriter. A PostScript file is a complete program that describes the precise appearance of a page — text, vector graphics, curves, fills, and even embedded raster images — using a stack-based interpreted language with full programming constructs. When sent to a PostScript-compatible printer or interpreter (such as Ghostscript), the program executes and produces rendered output. PostScript introduced cubic Bezier curves as the standard representation for smooth outlines, a mathematical model that became the foundation for virtually all subsequent vector graphics and font technology including PDF, SVG, and OpenType. The language also serves as a font format: Type 1 PostScript fonts encode glyph outlines as PostScript programs with hinting instructions for sharp rendering at low resolutions, while Type 3 fonts use the full language to define arbitrarily complex glyphs. One advantage is device independence — a PostScript file produces identical output whether rendered on a 300 dpi desktop printer, a high-resolution imagesetter, or a software rasterizer, because it describes shapes mathematically rather than as pixel grids. The human-readable text format provides another practical strength: PS files can be inspected, debugged, and modified with any text editor, and they can be generated programmatically by any software without requiring specialized libraries. PostScript files are widely handled by Ghostscript, Adobe Acrobat, preview applications, and numerous publishing and graphics tools.
Developer: Adobe Systems
Initial release: 1984

Frequently Asked Questions

Why convert G4 to PS?

Vector PS format lets you resize fax content freely — perfect for professional printing or technical illustration.

What reads PS format?

View PS files with Ghostscript, GSview, Adobe Acrobat, or Evince — all handle this format natively.

Does the converter preserve full G4 resolution?

All original clarity from G4 files is maintained. The PS output is pixel-accurate for monochrome content.

Are there fees for G4 to PS conversion?

No fees for standard use. Premium plans provide enhanced speed, higher limits, and priority queue access.

Is simultaneous G4 file conversion possible?

Yes — drop several G4 files at once. Each is processed and delivered as a separate PS download.

Does the converter work on mobile devices?

Yes — the G4 to PS converter is fully responsive. It works on phones, tablets, and any device with a browser.