Windows · Free download · System

DiffLines2.0

DiffLines : Compare two text documents with a size of up to 4GB by placing them side by side, in order to spot different and identical lines

Operating system
Windows 10/11
File size
89 KB
License
GNU Public License
Last updated
Apr 30, 2026

117 downloads·596 page views

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Overview

What is DiffLines?

DiffLines : Compare two text documents with a size of up to 4GB by placing them side by side, in order to spot different and identical lines

In depth

A closer look at DiffLines

DiffLines is a tiny and portable application that gives you the possibility to compare the content of very large text files by placing them side by side, highlighting the differences. It offers support for files with up to 4GB in size.

Portable tool with a simple GUI

There is no setup pack involved. Instead, you can copy the downloaded files to a preferred directory on the disk or to a removable storage unit, in order to seamlessly launch DiffLines on any PC with little effort. It doesn't need DLLs or other components to work properly, nor does it add new entries to the system registry.When it comes to the interface, the utility opts for a standard window with a neatly structured layout, where you can select two files to compare by resorting to the built-in file browser. Unfortunately, it's not explicit concerning the supported file types. We've noticed that it works with .txt and .rtf format.

Compare text between two documents

With the click of a button, the text is compared and displayed in the main window, highlighting the different lines of text to help you spot them easier. Moreover, you can take into account or ignore case sensitive mode, together with spaces and tabs.The display font and colors can be customized when it comes to equal, different and blank lines, as well as reverted to default. In addition, you can synchronize the text between the two documents, skip to the next or previous difference using hotkeys, resort to a simple search tool, as well as view the start or end of the selection.

Evaluation and conclusion

It worked smoothly in our testing, without causing the operating system to hang, crash or indicate errors. System resources consumption was minimal, since it required a low amount of CPU and RAM to work properly.To sum it up, DiffLines may not come packed with a particularly rich set of options and customization preferences, but it offers a simple solution for comparing text between two documents to identify the same and different lines.

Verdict

Should you download DiffLines?

DiffLines runs on Windows 10/11 and is available under the GNU Public License license — the installer is 89 KB. We’ve catalogued it under System.

Verified clean. Every DiffLines build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance

DiffLines specifications

Category
System
Publisher
Vladimir Kladov
Last updated
Apr 30, 2026
License
GNU Public License
Operating system
Windows 10/11
File size
89 KB
Price
Free
Page views
596

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