JavaScript DOCX editor SDK
Document Authoring in your browser
Import a DOCX file, make changes, and export a high-fidelity PDF or DOCX file without touching a backend. The frame below is the live web-based DOCX editor component — see the JavaScript DOCX editor library in action by editing sample documents.
JavaScript DOCX editor demo
Try the Document Authoring experience
The embedded editor lets you edit DOCX files in the browser with full fidelity. Play around with it and see what’s possible compared to other rich text libraries. To get started, edit a sample document or import your own DOCX file.
Built for technical correctness and depth
Browser‑native, serverless editing
WebAssembly loads in seconds, runs fully offline, and handles megabyte‑scale docs. Your data never leaves the browser — compliance stays simple.
Pixel‑perfect WYSIWYG
Page‑based canvas renders DOCX files exactly and exports PDF/DOCX files that mirror the screen. Stakeholders sign off on what they actually see.
Code‑first DocJSON workflow
Readable JSON, type‑safe APIs, and granular commands speed up automation and custom UIs. Faster builds cut the total cost of ownership.
Desktop‑grade editor UX
Shortcuts, global undo/redo, and smooth scrolling feel native, even on huge files. Instantly familiar — users keep typing, not hunting for buttons.
Relied upon by industry leaders
API design and developer experience
DocJSON automation
Load, modify, or generate documents as straight JSON. Then render them instantly in the editor.
Framework-agnostic integration
Wrap the component in React, Vue, Svelte, or plain JavaScript — the API surface remains identical.
Rapid onboarding
Clear guides, runnable examples, and a clone-ready GitHub repo make you productive in minutes.
Supported formats and environments
Import/export
DOCX, PDF, DocJSON
Browsers
Current Chrome, Firefox, Safari, Edge
Deployment
In-browser TypeScript + WebAssembly; runs online or fully offline
JavaScript DOCX editor SDK
Who is it for
Frontend and full-stack JavaScript developers — Need a Word-grade editor that drops into any framework without spinning up additional services.
SaaS product managers in legal, finance, and compliance-heavy sectors — Must let users edit contracts or reports while keeping sensitive data under local control.
Field-service and mobile workforce leads — Teams lose connectivity on job sites yet still need to fill inspection forms.
CTOs and engineering directors — Want to cut server costs and shorten time-to-value for document workflows.
Security and DevOps teams — Face constant audits around data residency and infrastructure risk.
Frequently asked questions
Can I edit DOCX files in your browser-based DOCX editor without a backend?
Yes. Nutrient’s browser-based DOCX editor (Document Authoring component) runs entirely client-side via WebAssembly. You can edit a DOCX in the browser — even offline or in air-gapped environments — without touching any server resources.
What file formats does your JavaScript SDK for Word documents support?
Out of the box, the JavaScript DOCX editor SDK loads and saves PDF and DocJSON files. To open or export DOCX files, enable the optional DOCX Support feature in your license.
How is page fidelity maintained when I export to PDF or DOCX?
The WebAssembly DOCX viewer and editor share a page-based layout engine that mirrors desktop Word. Headers, footers, tables, and page breaks are preserved for pixel-perfect prints and archives.
Which browsers work with the browser-based DOCX editor SDK?
The current versions of Chrome, Firefox, Safari, and Edge are fully supported. Because the component is standards-based, no plugins or extensions are required.
Does your JavaScript SDK for Word documents send any data to Nutrient servers?
No. All processing happens in the user’s browser. You control where documents are stored, making compliance and data-governance mandates easier to meet.
Is a special license required for DOCX import and export?
Yes. DOCX handling is unlocked by adding the DOCX Support feature to your Document Authoring license. PDF and DocJSON are available in every tier.
Can I embed the WebAssembly DOCX viewer in React or Vue?
Absolutely. The core API is framework-agnostic, and sample wrappers for React, Vue, and vanilla JavaScript are available in the developer guides.
What is DocJSON and why should I use it?
DocJSON is the editor’s native JSON format. It lets you generate, diff, and patch documents programmatically, and then render them instantly in the browser.
Is the output PDF really print-ready?
Yes. The WebAssembly DOCX viewer embeds fonts and preserves layout, producing PDFs suitable for contracts, reports, and any print-critical workflow.
Can I automate document generation with the JavaScript DOCX editor SDK?
Yes. Because DocJSON is plain JSON, you can build templates or merge data on the server or client, and then load the result directly into the browser-based DOCX editor for final tweaks or exporting.