DCA File

What are DCA files and how to open them

Are you having problems opening a DCA file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your DCA files.

What is a DCA file?

DCA files have multiple uses, and DCA Archiver Compressed Archive is one of them. Read more about the other uses further down the page.

DCA Archiver Compressed Archive File

.DCA files belong to the compressed archive files that are created using the DCA Archiver application. A compressed archive file is a collection of multiple files with their metadata. Metadata is the embedded information or data describing the content of the archived file.

The .DCA files are created by DCA Archiver, an application used to create compressed archive files.

How to open DCA files

Important: Different programs may use files with the DCA file extension for different purposes, so unless you are sure which format your DCA file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested four different DCA openers which you will find listed below.

Last updated: October 22, 2026

All known file formats using extension .DCA

While DCA Archiver Compressed Archive File is a popular type of DCA-file, we know of 2 different uses of the .DCA file extension. Different software may use files with the same extension for different types of data.

IBM Document Content Architecture / Revisable Form Text

IBM Document Content Architecture Revisable Form Text is an editable document format designed to allow the text content and formatting of a document to be created, modified, and exchanged across different IBM office systems. It encodes both the words and the structure of the document - such as pages, paragraphs, margins, headers, footers, and fonts - so that documents remain revisable rather than locked for presentation or printing only. This format enables modifications such as inserting, deleting, aligning, or styling text.

The format is produced using IBM's DCA (Document Content Architecture) standard, specifically the Revisable-Form Text (RFT) variant described in IBM's "Document Content Architecture: Revisable-Form Text Reference" (SC23-0758) and "Office Information Architectures: Concepts" (GC23-0765). Some IBM word processors including DisplayWrite can save or export documents in pure DCA-RFT so the content remains fully editable on the receiving system. When opened, applications that support it allow changes to both the text itself and the formatting specifications embedded in the file. When transmitted between systems, RFT-DCA ensures that formatting commands and document layout controls are clearly defined so that varied systems can render or edit documents consistently.

Files in this format begin with a specific byte signature: the first bytes are 0x0005E1030000 starting at offset zero. This helps identify the format uniquely in file-type detection.

Various apps that use files with this extension

These apps are known to open certain types of DCA files. Remember, different programs may use DCA files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DCA file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.