Comparison for Node.js via Java

Compare Documents with Node.js: Highlight Any Differences

Use GroupDocs.Comparison API to develop native JavaScript applications with highly configurable comparison features. Compare files, their content & text style between similar document formats.

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// Specify the source document
const comparer = new Comparer("source.bmp");

// Add one or more target documents
comparer.add("target.bmp");

// Specify comparison options
const options = new groupdocs.comparison.CompareOptions();
options.setGenerateSummaryPage(false);

// Compare and save result
await comparer.compare(outputFileName, options);

npm i @groupdocs/groupdocs.comparison

GroupDocs.Comparison at a glance

API to compare various types of documents such as PDF, Microsoft Office, HTML, e-mails, or images within Node.js applications

Detailed output reports

GroupDocs.Comparison identifies changes in document content (characters, words, paragraphs, tables, charts), as well as, changes in document style. It provides customers with a resulting report that contains rich information about differences, their number, and type.

Most popular file and document formats are supported

With GroupDocs.Comparison API you can efficiently compare documents of any supported formats like PDF, HTML, e-mail, Microsoft Office Word documents, Excel spreadsheets, PowerPoint presentations, OneNote, Visio diagrams, texts, JPEG, PNG, GIF, and BMP images as well as many other formats.

Documentation and examples

There is already a lot of documentation on using Comparison library on different platforms with code examples, so you don’t have to think hard about how to work with GroupDocs.Comparison API in your Node.js application.

Select changes and merge them to one file

If you have different versions of one document it is possible to select only desired changes and compile new document using the GroupDocs.Comparison library.

Platform independence

GroupDocs.Comparison for Node.js via Java supports the following operating systems, frameworks and package managers

Supported file formats

GroupDocs.Comparison for Node.js via Java supports operations with the following file formats.

Microsoft Office & OpenDocument formats

Word: DOCX, DOC, DOCM,DOT, DOTM, DOTX, RTX, RTF, TXT
Excel: XLSX, XLS, XLT, XLTM, XLSB, XLSM
PowerPoint: PPTX, PPT, POT, POTX, PPS, PPSX
Outlook: EML, EMLX, MSG
OneNote: ONE
OpenDocument: ODT, ODP, OTP, ODS, OTT
Fixed Page Layout: PDF

Images, Graphics & Diagrams

Raster images: BMP, GIF, JPG, JPEG, PNG
Medical Imaging: DICOM
Microsoft Visio: VSDX, VSD, VSS, VST, VDX
AutoCAD Drawing: DWG, DXF

Other

Text: TXT
Programming Languages: CS, Java, CPP, JS, PY, RB, PL, ASM, GROOVY, JSON, PHP, SQL, LOG, DIFF, LESS, SCALA
Web: HTM, HTML, MHT, MHTML
e-Books: MOBI, DjVu
Delimiter-Separated Values: CSV

GroupDocs.Comparison for Node.js via Java features

Easily compare PDF and Office documents, images and other formats

Easy to use document comparison

Analyze and identify differences within two documents.

Compare multiple documents

Analyze and identify differences within multiple documents simultaneously.

Supported formats

Supports more than 50 popular document formats from various categories.

Accept or reject changes

Clear visual representation of identified changes, providing the option to accept or reject modifications.

Generate previews

Save the results of the comparison as images.

Content comparison

Compare text content line-by-line, by paragraphs, by words, by characters. Highlight the changes.

Style comparison

Detect changes in formatting and styles.

Set metadata

Keep metadata from either the source or target files or allow it to be specified by users.

Password protection

Analyze the encrypted documents, or secure the resulting document with a password.

Compare specific pages

Load just the particular sections or pages of the document.

Display comments

When loading the source document you can choose whether to hide or show comments.

Code samples

Some use cases of typical GroupDocs.Comparison for Node.js via Java operations

Comparing password-protected documents.

To compare documents that are protected with a password, you need to specify it then loading the documents:

How to compare password-protected documents.


import { Comparer, LoadOptions } from '@groupdocs/groupdocs.comparison'

// Load the source document and specify its password
const comparer = new Comparer("source.docx", new LoadOptions("1234"));

// Load the target document and specify its password
comparer.add("target.docx", new LoadOptions("5678"));

// Save comparison result to a specified file
comparer.compare("result.docx");

Comparing multiple PDF documents.

GroupDocs.Comparison allows you to compare more than two documents. The operation is almost the same as when comparing two files. You just need to add more target files to the comparer class.

How to compare three or more documents.

import { Comparer } from '@groupdocs/groupdocs.comparison'

// Load the source document
const comparer = new Comparer(source.pdf");

// Specify the second file for comparison
comparer.add("target2.pdf");

// Specify the third file for comparison
comparer.add("target3.pdf");

// Save comparison result to a specified file
comparer.compare("result.pdf");