Document Tools
Merge DOCX JavaScript Overview
The Merge DOCX JS module allows users to combine multiple Word documents into a single DOCX file.
Some key features of the Merge DOCX JS module include keeping the original formatting of every merged document, separating documents with a section break or a page break, and updating page numbers and tables of contents to match the combined result. Password protected documents are supported, and legacy DOC files can be mixed with DOCX.
This JS module is useful for assembling contracts, reports, and generated documents into a single Word file as part of an automated workflow.
Lightning Fast Conversions
Process and convert files in seconds with our high-performance cloud infrastructure.
Accuracy Guaranteed
Our advanced algorithms ensure pixel-perfect and content-accurate file conversions.
Enterprise-Grade Security
ISO 27001, HIPAA, and GDPR compliant with encrypted file processing.
Global Infrastructure
Strategically located servers ensure low latency and high availability worldwide.
Developer Friendly
Comprehensive SDKs and clear documentation for quick and simple integration.
Time-Saving Automation
Automate repetitive document workflows and focus on what matters most.
Customizable Parameters
Fine-tune your automation with these powerful conversion options
Files
File Supported formats: .docx .docFiles to be converted. Value can be URL or file content. If used in query or multipart content parameter must be suffixed with index e.g. Files[0], Files[1], Files[2]...
Password
StringSets the password to open protected documents.
BreakType
Collection Default: sectionSets the break inserted between merged documents. Section keeps each document's own headers, footers, page size, and margins. Page starts each document on a new page. None appends documents without a break, so the content flows continuously.
Values: section page noneKeepSourceFormatting
Bool Default: TruePreserves the original fonts, styles, and paragraph spacing of every merged document, the same as the Keep Source Formatting paste option in Word. When disabled, merged documents are restyled with the styles of the first document.
UpdateFields
Bool Default: FalseUpdates page numbers, tables of contents, and cross-references after the merge, so they reflect the pagination of the combined document.
StoreFile
Bool Default: FalseWhen the StoreFile parameter is set to True, your converted file is written to ConvertAPI’s encrypted, temporary storage and made available via a time-limited secure download URL, valid for up to 3 hours. After this period, the file is permanently deleted.
When StoreFile is set to False, conversion happens entirely in-memory. The raw file bytes are streamed back in the API response without touching disk or external storage, ensuring maximum security and zero persistence so that only you can access the content.
Step-by-Step Guide
Easily integrate Merge DOCX using our JavaScript SDK
1. ConvertAPI JavaScript library install
ConvertAPI provides a JavaScript module that allows you to perform a Merge DOCX conversion with just a few lines of code. First, install the convertapi-js@~1.1 package from npm:
NPM package >
npm i convertapi-js@~1.1
If you are interested in our old version of non-module JavaScript library you can find it here.
2. Authenticate your JavaScript library
Next, obtain your API Token by signing up for a free account. Once you sign up, you'll receive 250 free conversions instantly! Grab your API Token from the account dashboard, and authenticate the ConvertAPI JavaScript library like this:
import ConvertApi from 'convertapi-js'
let convertApi = ConvertApi.auth('api_token')
3. Merge DOCX using JavaScript in no time!
Once you have your authentication in place, simply copy-paste this docx to merge conversion code snippet into your JavaScript project. Merge DOCX documents using JavaScript with no effort at all!
Integrate within minutes
Easy Merge DOCX automation using our simple JavaScript SDK
Compatible With all JavaScript Frameworks & Tools
Businesses trust us
Highest rated File Conversion API on major B2B software listing platforms: Capterra, G2, and Trustpilot.
"ConvertAPI has been a game-changer for our document automation workflows. Their conversion accuracy and API reliability are unmatched in the industry for over 7 years."
"ConvertAPI is a reliable, cost-effective solution with a proven track record of stability. It has grown significantly in maturity, adopting enterprise-grade practices over the years."
"We've integrated ConvertAPI across our entire document processing platform. The performance is exceptional and the support team is always responsive. Highly recommended!"
Enterprise-Grade Security
We ensure that all document processing is handled securely in the cloud, adhering to industry-leading standards like ISO 27001, GDPR, and HIPAA. To enhance security even further, we can ensure that no files or data are stored on our servers and never leave your country.
Learn more about security