G4 to FTS conversion is the process of transforming image files encoded with G4 (CCITT Group 4) fax-compression—commonly used for monochrome scanned documents—into the FTS image format. This conversion decodes the lossless, run-length compressed binary data and re-encodes it into the FTS container, preserving document legibility and enabling compatibility with applications that require FTS images.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
WebP has quietly become the default image format of the modern web, delivering 25-35% smaller files than JPG and PNG with universal browser support. This 2026 guide covers current adoption stats, browser compatibility, WordPress integration, conversion workflows, and when to choose WebP over AVIF for optimal Core Web Vitals performance.
Read guide →Not sure whether to save your image as PNG or JPG? This detailed comparison covers compression, transparency, file size, web performance, and real-world use cases so you can pick the right format every time — with conversion links when you need to switch.
Read guide →Learn how to convert HEIC to JPG for maximum compatibility. This guide explains what HEIC is, why iPhones use it, the key differences between HEIC and JPG, and walks through every conversion method including online tools, iPhone settings, Windows, and Mac.
Read guide →Drag your .G4 file from your computer or use the browse function.
Confirm .fts as the selected destination format.
Click "Convert" and download your converted .FTS file once ready.
G4 files typically use the TIFF Group 4 Fax compression codec, associated with the MIME type image/tiff. FTS files are often used in specialized document management systems with MIME types such as application/fts and support various codecs for optimized storage and retrieval.
The FTS (.FTS) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like G4.
While specific technical details aren't available here, FTS files generally serve the purpose of storing image effectively within their domain.
Easily convert your G4 files to FTS format using our efficient online converter. Designed for seamless file transformation, our tool supports fast uploads, secure processing, and high-quality outputs without the need for software installation.
G4 is a fax image format primarily used for scanned documents and fax transmissions, whereas FTS is a more versatile file format optimized for modern document handling. Unlike G4, FTS supports advanced compression and broader software compatibility, making it ideal for digital workflows.
Keep source G4 files under recommended sizes: aim for under 10–25MB per page for fastest handling; very large multi-page TIFFs slow processing.
Preserve quality by retaining 1-bit bilevel encoding when source is pure black-and-white; avoid unnecessary color or grayscale conversion that increases size.
For bulk work, batch convert in groups (e.g., 50–200 pages) to reduce memory usage and allow checkpointing; split very large multi-page files beforehand.
Be aware of limitations: G4 is optimized for bilevel text/line art—photographic detail is not supported; converting halftone scans may introduce artifacts unless dithered.
This G4 to FTS converter saved me hours of manual work.
Emily R.
Photographer
Reliable and fast conversion with no quality loss.
Jake M.
IT Specialist
Perfect tool for easy file format changes in our workflow.
Laura K.
Office Manager
Start your free G4 to FTS conversion now.
Drag your file here to to upload.
Up to 250MB
If preserving searchable text is needed, run OCR after conversion because G4/FTS store image pixels but not recognized text by default.