EFX to TXT Conversion Explained
Converting .EFX to .TXT changes a proprietary, image-based fax document into a plain text file. People convert .EFX to .TXT to extract readable data from faxes so they can search, edit, or copy the content.
When you convert an eFax document to plain text, you gain universal compatibility and searchability. However, you lose all visual elements. Because .EFX files contain scanned images of pages rather than actual text characters, this conversion requires Optical Character Recognition (OCR).
This conversion is a bad idea if you need to preserve legal signatures, company letterheads, handwritten notes, or exact document layouts. If you need a visual record of the fax, convert .EFX to .PDF instead.
Typical Tasks and Users
- Legal Assistants: Extracting text from faxed contracts or court filings to quote paragraphs in new documents.
- Medical Staff: Pulling patient data from faxed referrals to paste into Electronic Health Record (EHR) systems.
- Data Entry Clerks: Copying addresses, part numbers, or order details from faxed purchase orders into a database.
- Archivists: Converting legacy fax archives into searchable text repositories.
Software & Tool Support
The .EFX format is highly proprietary. It is primarily created and opened by eFax Messenger. A few third-party image viewers, such as XnView or IrfanView (with the right plugins), can open .EFX files to view the images.
Because .EFX is an image format, you cannot simply "save as" text. A manual conversion requires exporting the .EFX to an image format like .TIFF, and then processing that image with OCR software like Tesseract OCR, Adobe Acrobat, or ABBYY FineReader.
The resulting .TXT file is an open standard. It opens natively on every operating system using basic editors like Windows Notepad, Apple TextEdit, or Visual Studio Code.
Pros and Cons of the Conversion
Pros:
- Searchability: Plain text can be indexed by databases, search engines, and local file explorers.
- Editability: You can easily copy, paste, and modify the text.
- File Size: .TXT files are extremely small (kilobytes), whereas .EFX files containing multiple scanned pages are much larger (megabytes).
- Universal Compatibility: .TXT requires no proprietary software or paid subscriptions to open.
Cons:
- Total Layout Loss: Columns, margins, tables, and pagination disappear. The output is a single stream of text.
- Visual Data Loss: Signatures, stamps, logos, and letterheads are permanently deleted.
- OCR Errors: Faxes often suffer from low resolution, scan lines, and compression artifacts. These visual defects cause OCR engines to generate typos or garbled text.
Conversion Difficulties & Why Convert.Guru
The technical problem in this conversion is that .EFX files do not contain text. They contain rasterized image data wrapped in a proprietary container. A direct data translation is impossible.
The conversion pipeline must first decode the .EFX wrapper, extract the raw page images, apply image pre-processing (like deskewing and contrast enhancement), and finally run an OCR engine to guess the characters based on pixel patterns. Low-DPI faxes frequently cause OCR engines to confuse similar characters, such as "O" and "0", or "l" and "1".
Convert.Guru handles this entire pipeline automatically. It decodes the proprietary .EFX file, processes the images, and applies high-quality OCR to extract the text. This gives you a clean .TXT file in one step, eliminating the need to install eFax software, export to intermediate image formats, and run standalone OCR tools.
EFX vs. TXT: What is the better choice?
| Feature | .EFX | .TXT |
| Data Type | Raster image (scanned pages) | Plain text characters |
| Proprietary | Yes (Owned by eFax) | No (Open standard) |
| Preserves Signatures | Yes | No |
| Searchable Content | No | Yes |
| File Size | Large | Very Small |
Which format should you choose?
Choose .EFX (or convert to .PDF) if you need a legal record of the transmission, must verify handwritten signatures, or need to see the original document layout exactly as it was sent.
Choose .TXT if you only need the raw data, want to feed the text into a database, or need to search through thousands of old faxes using text queries.
Avoid converting to .TXT if the original fax contains complex tables, charts, or heavy handwriting, as the OCR process will fail to capture this information accurately.
Conclusion
Converting .EFX to .TXT makes sense when you need to extract raw data from proprietary fax images for search, editing, or database entry. The biggest limitation to watch for is OCR accuracy; the quality of your .TXT file depends entirely on the visual clarity of the original fax. Convert.Guru is a reliable choice for this exact conversion because it bridges the gap between a closed image format and an open text format using integrated OCR, saving you from a complex, multi-step manual workflow.
About the EFX to TXT Converter
Convert.Guru makes it fast and easy to convert eFax documents to TXT online. The EFX to TXT converter runs entirely in your browser, so there’s no software to install and no account required. Powered by one of the industry’s largest and most trusted file format databases—maintained for more than 25 years—our technology reliably identifies EFX documents even when they are damaged or incorrectly named. Uploaded files are automatically deleted after conversion to protect your privacy.