188

.188Lotus Word Pro Document

IBM (formerly Lotus Development Corporation) · 1995

Developer
IBM (formerly Lotus Development Corporation)
Category
Documents
MIME Type
application/vnd.lotus-wordpro
First Released
1995
Open Format
No
File Signature
Not readily available or standardized for public use.
At a Glance
.188
Lotus Word Pro Document

.188 files are legacy documents created by the Lotus Word Pro word processing software.

Reviewed on May 3, 2026
Compression
Compressed
Transparency
N/A
Editability
Low
Best for
Legacy document storage

Key Features

  • Stores formatted text and document layout.
  • Supported embedded objects like images.
  • Proprietary binary format.
  • Primarily used with Lotus Word Pro software.

Best For

  • Users who still maintain Lotus Word Pro installations.
  • Archiving documents from older office suites.
  • Viewing legacy documents with compatible software.

Less Ideal For

  • Cross-platform document sharing (use .docx or .pdf).
  • Modern collaborative document editing.
  • Creating new documents for widespread compatibility.
  • Embedding complex multimedia content.

Common Use Cases

  • Storing and editing text documents.
  • Creating reports and proposals.
  • Archiving legacy documents from Lotus Word Pro.

How to Open It

  1. The primary method is to open them with Lotus Word Pro, if you have it installed.
  2. Consider using document conversion software that specifically supports Lotus Word Pro files.
  3. Some older office suite viewers or emulators might offer limited support.

What is a .188 file?

The .188 file extension is primarily associated with Lotus Word Pro, a word processing application that was part of the Lotus SmartSuite office suite. It was designed to compete with Microsoft Word and WordPerfect, offering a range of features for document creation and editing. These files store formatted text, layout information, and potentially embedded objects like images or tables. While Lotus Word Pro is no longer actively developed or widely used, older documents created with it may still be encountered.

Programs That Open .188 Files

PlatformProgram
WindowsLotus Word ProPaidOfficial

How to Convert .188 Files

FormatMethod
.DOCXLotus Word Pro (Export), Third-party converters
.PDFLotus Word Pro (Save As), Third-party converters

Common Problems with .188 Files

⚠️ Cannot open .188 files without Lotus Word Pro.
Install Lotus Word Pro if available, or use a converter that supports the format.
⚠️ Formatting is lost or incorrect when converting.
Complex formatting may not convert perfectly. Manual adjustments might be necessary after conversion.

Frequently Asked Questions

Is .188 a common file format today?

No, .188 is a legacy format primarily associated with Lotus Word Pro and is not commonly used for new documents.

Can I open .188 files on a Mac or Linux computer?

Directly opening .188 files on Mac or Linux is difficult without specialized software or emulators. Conversion to a more universal format like .docx or .pdf is recommended.

Technical Details

Lotus Word Pro documents (.188) are proprietary binary files. They contain structured data representing text, formatting, and layout. The internal structure is specific to the Lotus Word Pro application and not publicly documented, making direct manipulation or parsing difficult without specialized tools.

Did You Know?

Lotus Word Pro was part of the Lotus SmartSuite, which was a major competitor to Microsoft Office in the 1990s.
The .188 extension was chosen to avoid conflicts with other common file extensions of the time.

Security Information

As with any document file, be cautious when opening .188 files from unknown or untrusted sources, as they could potentially contain malicious code, although this is less common for older document formats compared to executables.

Related Extensions