ODP to G4 Converter

Convert ODP slides to Group 4 FAX compression, free

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Slides to Fax Images

Convert ODP presentations into Group 4 FAX compressed images — ready for fax servers, document imaging systems, and electronic archival platforms.

Compact Monochrome Files

G4 compression squeezes maximum efficiency from black-and-white data. Text-heavy ODP slides produce remarkably small files without any quality degradation.

Secure Processing

Your ODP file is removed from Convertio servers immediately after the conversion. Generated G4 images are purged automatically within 24 hours.

How to convert ODP to G4

1

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

2

Choose g4 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your g4 file right afterwards

About formats

ODP (OpenDocument Presentation) is the presentation file format defined by the OpenDocument Format (ODF) standard, developed by the OASIS technical committee and first published as ODF 1.0 on May 1, 2005, later adopted as international standard ISO/IEC 26300. An ODP file is a ZIP archive containing XML documents that describe presentation content, styles, metadata, and settings using a vendor-neutral, royalty-free specification. Slides are defined in content.xml using drawing and presentation namespaces, with separate files for styles, manifest, and embedded media. The format supports text frames, images, charts, tables, shapes, gradients, transparency, slide transitions, animations, master pages, and speaker notes. ODP serves as the native format for LibreOffice Impress, Apache OpenOffice Impress, and Calligra Stage, and can be imported by Microsoft PowerPoint, Google Slides, and other commercial tools. One advantage is vendor independence — ODP is governed by an open standard rather than a single company, ensuring long-term accessibility and freedom from proprietary lock-in. This makes ODP particularly valuable for government agencies, educational institutions, and organizations with digital preservation mandates. The fully documented XML structure is another strength, enabling programmatic generation and processing using any programming language with XML support. ODP is mandated or recommended as a document format by numerous national governments worldwide.
Developer: OASIS
Initial release: May 1, 2005
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

Frequently Asked Questions

Why convert ODP to G4?

G4 compression produces compact lossless monochrome images — ideal for fax transmission, document management systems, and long-term archival of presentation content.

What opens G4 files?

Most TIFF viewers support G4 compression, including IrfanView, XnView, and Windows Photo Viewer. Fax servers and document management systems handle G4 images natively.

Is G4 compression lossless?

Yes — G4 applies lossless encoding to black-and-white pixel data. Every line and character from your ODP slides is preserved exactly, just stored more compactly.

Does G4 only work with monochrome?

G4 is designed for bi-level (black-and-white) images. Color ODP slides are converted to high-contrast monochrome — best suited for text-heavy presentations.

How does G4 compare to G3?

G4 achieves better compression ratios than G3 because it uses two-dimensional encoding. For the same slide content, G4 files are typically 20-40% smaller.

Is ODP to G4 conversion free?

Yes, Convertio offers free ODP to G4 conversion. Premium plans provide higher file limits and batch processing for document management workflows.