---
title: "Best JavaScript PDF viewer libraries (2026): 5 options compared"
canonical_url: "https://www.nutrient.io/blog/top-5-javascript-pdf-viewers/"
md_url: "https://www.nutrient.io/blog/top-5-javascript-pdf-viewers.md"
last_updated: "2026-07-22T15:22:38.041Z"
description: "Compare five JavaScript PDF viewer libraries — features, bundle size, annotation support, and licensing — to pick the right one for your web app in 2026."
---
**TL;DR**
This guide compares five JavaScript PDF viewers available in 2026:
- [Nutrient Web SDK](#nutrient-web-sdk-best-for-enterprise-and-collaboration)
- [PDF.js](#pdfjs-best-for-simple-open-source-needs)
- [react-pdf](#react-pdf-best-for-react-developers)
- [ngx-extended-pdf-viewer](#ngx-extended-pdf-viewer-best-for-angular-apps)
- [EmbedPDF](#embedpdf-best-for-vue-svelte-and-framework-agnostic-apps)
The post will compare features, performance, pricing, and ideal use cases. Read on for a quick overview, and then dive deeper to choose the best viewer for your project.
## Quick summary table of JavaScript PDF viewers
Here’s a quick summary of the best JavaScript PDF viewers available in 2026, including their key features, licensing, and supported frameworks.
| Viewer | Best for | License | Frameworks |
| --------------------------- | ---------------------------- | ---------- | ---------------------------------- |
| Nutrient Web SDK ★ Top pick | Enterprise and collaboration | Commercial | All (vanilla, React, Angular, Vue) |
| PDF.js | Lightweight apps | Free | All |
| react-pdf | React apps | Free | React |
| ngx-extended-pdf-viewer | Angular apps | Free | Angular |
| EmbedPDF | Vue, React, Svelte, vanilla | Free (MIT) | Framework-agnostic |
## What is a JavaScript PDF viewer?
A [JavaScript PDF viewer](https://www.nutrient.io/guides/web.md) renders PDF documents directly in the browser using client-side JavaScript. It can be embedded into webpages or JavaScript apps to display PDFs without requiring a server.
Most viewers offer a user-friendly interface with features like zoom, navigation, and text search. While many don’t support editing, some can be extended to handle annotations, form filling, signing, and more — making it easier to scale functionality without rewriting your code.
## What is the cost of a JavaScript PDF viewer?
JavaScript PDF viewers range from free open source libraries (like PDF.js) to commercial SDKs (like Nutrient Web SDK).
- **Free options** are great for basic viewing but may lack support, advanced features, or performance optimization.
- **Commercial options** provide enterprise-grade features, scalability, and professional support — ideal for production apps and secure environments.
Nutrient Web SDK offers a fully featured [free trial](https://www.nutrient.io/try/) so you can evaluate before committing.
## The five best JavaScript PDF viewers
This next section will provide an overview of the five best JavaScript PDF viewers.
### Nutrient Web SDK: Best for enterprise and collaboration
Since 2011, we at Nutrient have been working with the PDF specification and have developed one of the most comprehensive [PDF SDKs](https://www.nutrient.io/sdk/) available on the market. During that time, we’ve worked with many clients — including Disney, IBM, UBS, and Dropbox — to help them improve how their users work with PDF documents.
[Nutrient Web SDK](https://www.nutrient.io/guides/web.md) is our JavaScript PDF library — an SDK that offers PDF viewing, along with more than 30 other document processing tools (with many more tools planned). Try our [web demo](https://www.nutrient.io/demo/) to see what it can do.
#### Example of our JavaScript PDF viewer
To demo our [JavaScript PDF viewer](https://www.nutrient.io/demo/), upload a PDF, JPG, PNG, or TIFF file by clicking **Open Document** under the Standalone option (if you don’t see this option, select **Choose Example** from the dropdown). Once your document is displayed in the viewer, try drawing freehand, adding a note, or applying a crop or an eSignature.
#### Key features
- **Enterprise-grade security** — Robust [security controls](https://www.nutrient.io/sdk/solutions/security-compliance-privacy/), including encryption, access control, content protection, and audit-readiness.
- **Customizable UI** — Fully configurable [viewer interface](https://www.nutrient.io/guides/web/viewer.md), toolbars, themes, keyboard shortcuts, and localization.
- **High-fidelity rendering** — Pixel-perfect PDF rendering based on a hardened Chromium engine with [PDFium](https://www.nutrient.io/blog/why-pdfium-is-a-trusted-platform-for-pdf-rendering.md) under the hood.
- **Responsive and mobile-friendly** — Automatically adapts to all screen sizes and orientations, with full [touch and gesture support](https://www.nutrient.io/guides/web/user-interface/main-toolbar/responsive-groups.md).
- **Assistive tech and accessibility** — Supports screen readers, keyboard navigation, and [WCAG-compliant accessibility](https://www.nutrient.io/guides/web/viewer/accessibility.md).
- **Annotation tools** — [Create, edit, and manage](https://www.nutrient.io/guides/web/annotations.md) ink, highlight, stamp, note, and shape annotations. Import/export XFDF or JSON.
- **Form handling** — [Design and fill forms](https://www.nutrient.io/guides/web/forms.md) with AcroForm support, validations, autofill, and export to data formats.
- **Digital signatures** — [Add and validate](https://www.nutrient.io/guides/web/signatures.md) eSignatures and certificate-based digital signatures inline.
- **AI-powered assistant** — Use [Nutrient AI Assistant](https://www.nutrient.io/sdk/ai-assistant/) to redact sensitive data, summarize text, extract insights, and generate smart actions.
- **Document generation** — [Generate PDFs](https://www.nutrient.io/sdk/solutions/generation/) from templates or structured/unstructured data in real time.
- **Document editing** — [Manipulate pages](https://www.nutrient.io/guides/web/editor.md), merge/split files, crop, rotate, reorder, and apply visual changes.
- **Redaction** — [Search and remove sensitive text or regions](https://www.nutrient.io/guides/web/redaction.md) with permanent and audit-safe [redaction tools](https://www.nutrient.io/sdk/solutions/redaction/).
- **File format conversion** — [Convert](https://www.nutrient.io/guides/web/conversion.md) PDFs to/from DOCX, XLSX, PNG, JPEG, TIFF, and more — on the fly.
- **Real-time collaboration** — [Enable live collaboration](https://www.nutrient.io/sdk/solutions/collaboration/) with shared commenting, version control, and multi-user sessions.
- **Thumbnail and bookmark management** — [Display page previews](https://www.nutrient.io/guides/web/viewer.md) and manage hierarchical outlines and navigation.
- **Full file format support** — View and process:
- PDF, PDF/A
- Microsoft Office (Word, Excel, PowerPoint)
- Image formats (TIFF, JPG, PNG, WebP)
#### Pros
- **Secure and compliant** — Trusted by enterprises handling sensitive data (finance, legal, healthcare).
- **Developer-friendly** — Modular SDK with strong API documentation, code samples, and flexible integrations.
- **Highly extensible** — Supports advanced workflows like dynamic generation, real-time edits, and intelligent redaction.
#### Cons
- **Not open source** — Requires a commercial license for most production use cases. A [fully featured free trial](https://www.nutrient.io/try/) is available for evaluation.
#### Ideal use cases
- Enterprise apps requiring PDF editing, signing, and secure collaboration
- Internal portals with document workflows (HR, finance, compliance)
- Customer-facing dashboards that need embedded, branded PDF viewers
- Applications needing AI assistance for redaction or summarization
#### Pricing
Nutrient has simple and flexible [pricing](https://www.nutrient.io/sdk/pricing/) that’s based on a couple factors: the number of components and products you require, and the total number of users accessing the technology. Unlike other commercial libraries, we don’t install invasive trackers in your application, and we never send any information about your documents or users to external servers.
### How to get started with Nutrient Web SDK
1. Create a project directory. Open your terminal and run:
```bash
mkdir my-pdf-viewer && cd my-pdf-viewer
```
2. Initialize your project. Create a Node.js project:
```bash
npm init -y
```
3. Install the `@nutrient-sdk/viewer` package:
```bash
npm install @nutrient-sdk/viewer
```
4. Copy the SDK assets to a local `assets` directory:
```bash
mkdir assets && cp -R./node_modules/@nutrient-sdk/viewer/dist/./assets/
```
5. Rename the PDF you want to display to `document.pdf` and place it in the root of your project directory. You can also use our [demo PDF document](https://www.nutrient.io/example.pdf) for testing.
6. Create the viewer HTML. Create an `index.html` file with the following content:
```html
Nutrient PDF Viewer
```
7. Initialize the viewer in JavaScript. Create an `index.js` file:
```js
import "./assets/nutrient-viewer.js";
const baseUrl = `${window.location.protocol}//${window.location.host}/assets/`;
NutrientViewer.load({
baseUrl,
container: "#nutrient",
document: "document.pdf",
}).then((instance) => {
console.log("Nutrient loaded", instance);
}).catch((error) => {
console.error(error.message);
});
```
This loads and mounts the Nutrient PDF viewer with your specified document.
8. Install a local static server and run it:
```bash
npm install --global serve
serve -l 8080.
```
Visit [http://localhost:8080](http://localhost:8080) to view your PDF viewer. You should see your PDF rendered inside the Nutrient Web SDK viewer.
If you prefer a video tutorial, you can watch our step-by-step guide.
#### Additional resources
For more details, check out our [guides](https://www.nutrient.io/guides/web/intro.md), [code samples](https://www.nutrient.io/guides/web/samples.md), and [API documentation](https://www.nutrient.io/api/web/).
If you’re looking for related tutorials, you might find these posts helpful:
- [How to embed a PDF viewer in your website](https://www.nutrient.io/blog/how-to-embed-a-pdf-viewer-in-your-website.md)
- [Convert HTML to PDF in JavaScript](https://www.nutrient.io/blog/html-to-pdf-in-javascript/)
These resources will give you actionable insights for working with Nutrient in your projects.
**Featured Content**
**Looking for a free JavaScript PDF viewer?**
Try Nutrient Web SDK free — no credit card required. Explore high-fidelity viewing, annotations, signing, and more.
[Start Free Trial](https://www.nutrient.io/sdk/try/)
### PDF.js: Best for simple, open source needs
[PDF.js](https://mozilla.github.io/pdf.js/) is a popular open source JavaScript library launched by Mozilla in 2011. It has tens of thousands of GitHub stars and hundreds of contributors, and it’s used by Firefox to open PDFs natively in the browser.
- It has a good security track record, with Mozilla quickly patching vulnerabilities (learn more in the [security advisories](https://www.mozilla.org/en-US/security/advisories/)).
- PDF.js doesn’t collect or transmit any information about users or documents.
- PDF.js offers a customizable viewer interface that can be themed via CSS or extended by modifying its source code or using the lower-level API.
- PDF.js supports rendering existing annotations, but it doesn’t support creating or editing them; there’s no built-in support for adding ink, text notes, or form data.
#### Supported file types
- PDF
#### Pricing
PDF.js is free and open source, available under the [Apache License 2.0](https://github.com/mozilla/pdf.js/blob/master/LICENSE).
#### Pros
- **Open source** — Free to use, with a strong community supporting it.
- **Wide adoption** — Widely used, especially in Firefox and other browsers.
- **Customizable UI** — Allows adjustments to match your app’s branding and user experience.
#### Cons
- **Basic features** — Limited to annotations and lacks advanced editing features.
- **Rendering performance** — May struggle with large or complex PDFs, especially on lower-end devices.
#### Use cases
- **Basic PDF viewing** — Ideal for apps that only need to display PDFs.
- **Browsers and websites** — Supported natively by Firefox, making it perfect for browser-based applications.
If you’d like to get started with PDF.js, here are some helpful tutorials to get you up and running:
- [Complete guide to PDF.js: The leading JavaScript library for PDF rendering](https://www.nutrient.io/blog/complete-guide-to-pdfjs.md)
- [How to build a JavaScript PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-a-javascript-pdf-viewer-with-pdfjs.md)
- [How to build a React PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-a-reactjs-viewer-with-pdfjs.md)
- [How to build a TypeScript PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-a-typescript-pdf-viewer-with-pdfjs/)
- [How to build a Vue.js PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-a-vuejs-pdf-viewer-with-pdfjs.md)
- [How to build an Angular PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-an-angular-pdf-viewer-with-pdfjs.md)
- [How to build an Electron PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-an-electron-pdf-viewer-with-pdfjs/)
### react-pdf: Best for React developers
[react-pdf](https://www.npmjs.com/package/react-pdf) is a popular open source React component that renders PDF files using PDF.js. It has thousands of GitHub stars and an active contributor community.
- It leverages PDF.js for rendering, ensuring compatibility and performance.
- There were no known vulnerabilities when this blog was published. Any vulnerabilities in PDF.js will also affect react-pdf.
- It doesn’t collect or transmit any information about users or documents.
- The UI is minimal and requires further customization through APIs to meet your needs.
- The same features as PDF.js, such as annotations and form filling, are available in react-pdf.
#### Supported file types
- PDF
#### Pricing
react-pdf is free and open source, available under the [MIT license](https://github.com/wojtekmaj/react-pdf/blob/main/LICENSE).
#### Pros
- **React component** — Specifically designed for React, making it easy to integrate.
- **Uses PDF.js** — Leverages PDF.js for rendering, ensuring compatibility.
- **Flexible API** — Provides an easy-to-use API for rendering individual pages and customizing the viewer.
#### Cons
- **Basic UI** — Requires further development for a more sophisticated interface.
- **Performance on large documents** — May experience performance issues with large or complex PDFs.
#### Use cases
- **React projects** — Ideal for React applications that need PDF display functionality.
- **Single-page PDF viewing** — Useful for apps displaying one PDF page at a time, such as documentation viewers.
#### Integration example
```javascript
import { Document, Page } from "react-pdf";
function MyPDFViewer() {
return (
);
}
```
#### When it’s crucial
- **React-based apps** — When building a React app and needing seamless PDF rendering.
- **Single-page PDF display** — Ideal for apps where only one PDF page is displayed at a time.
If you’d like to get started with `react-pdf`, here’s a helpful tutorial to get you up and running:
- [How to build a React.js PDF viewer with react-pdf](https://www.nutrient.io/blog/how-to-build-a-reactjs-pdf-viewer-with-react-pdf.md)
### ngx-extended-pdf-viewer: Best for Angular apps
[ngx-extended-pdf-viewer](https://www.npmjs.com/package/ngx-extended-pdf-viewer) is a popular open source Angular component that wraps PDF.js to enable seamless PDF viewing. It’s actively maintained and widely used in Angular applications.
- At the time of publishing, no vulnerabilities were known. However, since it uses PDF.js under the hood, any vulnerabilities in PDF.js will also affect ngx-extended-pdf-viewer.
- It doesn’t collect or transmit any user or document data.
- The UI is similar to PDF.js and customizable via CSS theming and API configuration. The [documentation](https://pdfviewer.net/extended-pdf-viewer/custom-toolbar) provides wizards to customize buttons, toolbars, sidebars, and thumbnails.
- Along with the features of PDF.js, it includes additional functionality such as prerendering, touch gestures, and events, for an improved user experience.
#### Supported file types
- PDF
#### Pricing
ngx-extended-pdf-viewer is free and open source, available under the [Apache License 2.0](https://github.com/mozilla/pdf.js/blob/master/LICENSE).
#### Pros
- **Angular integration** — Designed specifically for Angular, making it easy to use in Angular applications.
- **PDF.js backend** — Utilizes PDF.js for reliable rendering and compatibility.
- **Enhanced features** — Offers additional capabilities like touch gestures, prerendering, and event handling.
#### Cons
- **Framework-specific** — Limited to Angular projects, which restricts its use in other frameworks.
- **Missing advanced tools** — Lacks features like form filling and real-time collaboration.
#### Use cases
- **Angular applications** — Ideal for Angular-based apps requiring robust PDF viewing.
- **Touchscreen support** — Great for mobile and tablet apps with touch gesture and zooming functionality.
#### Integration example
```html
```
#### When it’s crucial
- **Angular projects** — Essential for Angular apps that require PDF viewing capabilities.
- **Mobile and tablet optimization** — Perfect for applications targeting touch-based devices.
If you’d like to get started with ngx-extended-pdf-viewer, here’s a helpful tutorial to get you up and running:
- [How to build an Angular PDF viewer with PDF.js](https://www.nutrient.io/blog/how-to-build-an-angular-pdf-viewer-with-pdfjs.md)
**Featured Content**
**Looking for a free JavaScript PDF viewer?**
Try Nutrient Web SDK free — no credit card required. Explore high-fidelity viewing, annotations, signing, and more.
[Start Free Trial](https://www.nutrient.io/sdk/try/)
### EmbedPDF: Best for Vue, Svelte, and framework-agnostic apps
[EmbedPDF](https://www.embedpdf.com/) is an open source, framework-agnostic PDF viewer that drops into any JavaScript project — Vue, React, Svelte, Preact, or vanilla JS — under the MIT license. It’s actively maintained with frequent releases (4K+ GitHub stars, dozens of releases) and ships built-in annotation and search alongside a pluggable architecture for extending the viewer.
- It uses its own rendering pipeline rather than wrapping PDF.js directly, which keeps the viewer’s CVE surface independent of upstream PDF.js issues.
- It doesn’t collect or transmit user or document data.
- The viewer ships a usable default UI and exposes a plugin API for customization.
#### Supported file types
- PDF
#### Pros
- **Framework-agnostic** — One library, works across Vue, React, Svelte, Preact, or plain JS.
- **Actively maintained** — Regular releases, MIT license, growing community.
- **Built-in annotations** — Annotation tools come out of the box, unlike most PDF.js wrappers.
- **Pluggable** — Architected for extension if you need custom controls or features.
#### Cons
- **Newer project** — Smaller install base than PDF.js or react-pdf, so fewer Stack Overflow answers when you hit edge cases.
- **No real-time collaboration** — Multiuser features and enterprise security controls aren’t part of the open source build.
#### Use cases
- **Vue.js or Svelte projects** — A maintained alternative for frameworks whose dedicated PDF.js wrappers are no longer actively maintained.
- **Framework-mixed codebases** — Teams running React on one app and Vue on another can use one viewer everywhere.
- **Lightweight viewer with annotation needs** — Free annotation support without the full enterprise SDK.
## Comparison table
This table will help you identify the best option based on specific project needs, such as integration ease, available features, support options, performance, and the ideal use case.
| **Feature** | **Nutrient Web SDK** | **PDF.js** | **React PDF** | **ngx-extended-pdf-viewer** | **EmbedPDF** |
| -------------------------------------- | --------------------------------------------------------------- | ----------------------------------------------------- | --------------------------- | --------------------------------- | --------------------------- |
| **Ease of integration** | Moderate (advanced features) | Easy (requires minimal setup) | Easy (React-specific) | Moderate (Angular-specific) | Easy (framework-agnostic) |
| **Advanced features** | Yes (annotations, form filling, signing, collaboration) | Basic (viewing only) | Basic (viewing only) | Yes (annotations, touch support) | Yes (annotations, search) |
| **Support availability** | High (commercial support, enterprise-level) | Community-based (limited) | Community-based (limited) | Community-based (limited) | Community-based |
| **Performance** | Excellent (optimized for large files, enterprise-level) | Good (basic rendering, can struggle with large files) | Good (leverages PDF.js) | Good (optimized for Angular apps) | Good |
| **Best for small teams** | No (requires paid license) | Yes (free, minimal setup) | Yes (free, minimal setup) | No (Angular-specific) | Yes (free, MIT) |
| **Best for enterprise-grade projects** | Yes (advanced features, real-time collaboration, high security) | No (limited features, basic viewer) | No (basic functionality) | No (Angular-specific) | No (no enterprise security) |
| **Ideal for lightweight apps** | No (feature-rich, more complex) | Yes (simple, minimal setup) | Yes (simple, minimal setup) | Yes (lightweight Angular support) | Yes (lightweight, plug-in) |
| **Ideal for document collaboration** | Yes (real-time annotations, sharing, signing) | No (limited to viewing) | No (limited to viewing) | Yes (annotations, touch support) | Partial (annotations only) |
### Summary of recommendations
- Best for small teams:
- **PDF.js**, **React PDF**, and **EmbedPDF** — All are free, easy to set up, and great for small teams needing a simple PDF viewer with basic features.
- Ideal for enterprise-grade projects:
- **Nutrient Web SDK** — Offers enterprise-level features like form filling, annotations, and real-time collaboration, making it perfect for large, secure, or collaborative applications.
- Best for lightweight apps:
- **PDF.js**, **React PDF**, and **EmbedPDF** — These options are suitable for lightweight applications where PDF viewing is the only requirement, with minimal setup and no need for advanced features.
- Best for document collaboration:
- **Nutrient Web SDK** and **ngx-extended-pdf-viewer** — These libraries support annotation, form filling, and collaboration, making them ideal for apps that involve teamwork or document editing.
### Common use cases for JavaScript PDF viewers
JavaScript PDF viewers do more than just display PDFs; they streamline workflows across various industries:
- **Sharing documents** — Embed PDFs directly into websites or apps for seamless access without downloads, enhancing user engagement.
- **Financial and legal** — Support collaborative workflows by displaying and annotating documents for reviews and approvals, keeping everyone updated with the latest version.
- **Education** — Facilitate sharing syllabi or assignments, enabling collaboration through in-document comments and edits synced across devices.
- **Architecture and construction** — Display blueprints, annotate changes, and measure directly in PDFs, even offline in remote locations.
- **Document security** — Protect sensitive content with restricted access, watermarks, and limited download or print options.
### How to choose the right JavaScript PDF viewer
When selecting a [JavaScript PDF viewer](https://www.nutrient.io/sdk/web/), consider these key factors:
- **Security** — Ensure the viewer is built on a secure PDF engine to protect against vulnerabilities.
> Nutrient is designed with security in mind, using an optimized fork of [PDFium](https://pdfium.googlesource.com/pdfium/) (the secure PDF engine used in Chromium) and undergoing independent third-party audits.
- **Privacy** — Verify that the library doesn’t collect or transmit user data.
> Nutrient, for instance, doesn’t gather any information about users or documents, ensuring complete privacy.
- **UI customization** — Look for flexible customization options, from basic theming to advanced API integrations.
> Nutrient offers robust customization tools, enabling seamless integration while protecting against UI-related vulnerabilities.
- **Features** — Ensure the viewer includes essential features like text search, zooming, navigation, and permissions.
> Nutrient also supports advanced features like annotations, form filling, signing, and real-time collaboration, making it a scalable choice for evolving needs.
Nutrient’s thorough documentation and reliable support make it easier to extend its functionality and ensure long-term usability.
## Final words
The best [JavaScript PDF viewer](https://www.nutrient.io/sdk/web/) for you depends entirely on your project’s requirements. While you should never make compromises in terms of security and privacy, you can be flexible with other factors and features.
If you only need to view PDFs and you don’t think your needs will expand in the future, then it’s a good idea to go with the most affordable solution. However, if you have — or predict having — more complex workflows, then the feature list becomes the crucial factor when selecting the right viewer.
If you want to test Nutrient’s JavaScript PDF viewer, you can get started with a [free trial](https://www.nutrient.io/try/) or play around with our [web demo](https://www.nutrient.io/demo/).
## FAQ
#### What is a JavaScript PDF viewer?
A JavaScript PDF viewer is a library that renders PDF documents directly in web browsers, allowing users to view PDFs without needing an external PDF viewer.
#### Can I customize the UI of JavaScript PDF viewers?
Yes, many JavaScript PDF viewers offer UI customization options, ranging from simple CSS theming to advanced API integrations for more complex customizations.
#### Do all JavaScript PDF viewers support PDF editing?
No, most JavaScript PDF viewers are designed for viewing only. However, some may support basic editing features like annotations and form filling.
#### Are there security risks with using a JavaScript PDF viewer?
Yes, using an insecure PDF viewer can expose your app to vulnerabilities. It’s crucial to choose a secure and regularly updated library to mitigate risks.
#### What are the common use cases for JavaScript PDF viewers?
JavaScript PDF viewers are widely used in industries like education, finance, and construction to display, share, and sometimes annotate PDF documents.
#### Is there a free JavaScript PDF viewer with advanced features?
Most free PDF viewers support only basic rendering. If you’re building a business-critical app that needs annotations, eSignatures, or real-time collaboration, you’ll likely need a commercial solution.
Nutrient Web SDK offers a risk-free trial and scales flexibly with your team. It’s built for enterprise needs with no document tracking or cloud lock-in.
#### What is the best JavaScript PDF viewer in 2026?
The best JavaScript PDF viewer depends on your use case:
- **Nutrient Web SDK** — Best for enterprise apps needing annotations, form filling, eSignatures, real-time collaboration, and AI-powered features. Commercial license with a free trial.
- **PDF.js** — Best free option for basic PDF display. Used by Firefox and maintained by Mozilla. No editing or annotation support.
- **react-pdf** — Best for React projects needing simple PDF rendering without added complexity.
- **ngx-extended-pdf-viewer** — Best for Angular apps. Wraps PDF.js with additional touch gesture and prerendering support.
- **EmbedPDF** — Best for Vue, Svelte, and other framework-agnostic apps. MIT-licensed, with built-in annotations and search.
For production applications handling sensitive documents or collaborative workflows, Nutrient Web SDK is the leading choice.
#### How do I embed a PDF viewer in a JavaScript app?
To embed a PDF viewer in a JavaScript app:
1. **Choose a library** — PDF.js for free open source, or Nutrient Web SDK for enterprise features.
2. **Install via npm** — For Nutrient: `npm install @nutrient-sdk/viewer`. For PDF.js: `npm install pdfjs-dist`.
3. **Add a container element** — Add a `` to your HTML.
4. **Initialize the viewer** — Pass the container ID and PDF file path to the library’s load method.
5. **Serve static assets** — Copy the library’s worker files to your public directory so the browser can load them.
Nutrient Web SDK loads in less than 10 lines of code and supports React, Angular, Vue, and vanilla JavaScript out of the box.
#### Can I display a PDF in a browser without a plugin?
Yes. Modern JavaScript PDF viewers render PDFs natively in the browser using WebAssembly and the HTML5 Canvas API — no plugin, browser extension, or PDF reader installation required.
PDF.js and Nutrient Web SDK both work entirely in the browser. Users on Chrome, Firefox, Safari, and Edge can view PDFs embedded in your app without installing anything extra. This approach also gives you full control over the viewer UI and feature set.
## Related reading
- [Comparing the best React PDF viewers](https://www.nutrient.io/blog/top-react-pdf-viewers/) — React-focused PDF viewer comparison
- [PDF.js vs. Nutrient](https://www.nutrient.io/blog/pdfjs-vs-nutrient/) — In-depth comparison for enterprise web apps
- [Open source vs. proprietary PDF SDKs](https://www.nutrient.io/blog/proprietary-vs-open-source-pdf-sdks/) — How open source libraries compare to commercial solutions
- [Top five document viewers for developers](https://www.nutrient.io/blog/top-doc-viewers/) — Compare DOCX and PDF viewer libraries side by side
See all product comparisons on the [SDK comparison page](https://www.nutrient.io/sdk/vs/).
---
## Related pages
- [The business case for accessibility: Five ways it drives enterprise value](/blog/5-ways-accessibility-drives-enterprise-value.md)
- [Accessibility Untangled Why It Matters Guide](/blog/accessibility-untangled-why-it-matters-guide.md)
- [Advanced Techniques For React Native Ui Components](/blog/advanced-techniques-for-react-native-ui-components.md)
- [`vector_store` holds your indexed documents (see the multimodal RAG post](/blog/agentic-rag.md)
- [Ai Document Automation Extraction To Action](/blog/ai-document-automation-extraction-to-action.md)
- [Ai Legal Assistant Document Authoring](/blog/ai-legal-assistant-document-authoring.md)
- [Angular File Viewer Pdf Image Office Files](/blog/angular-file-viewer-pdf-image-office-files.md)
- [Auto Tagging And Document Accessibility In Dotnet Sdk](/blog/auto-tagging-and-document-accessibility-in-dotnet-sdk.md)
- [Best Document Viewers](/blog/best-document-viewers.md)
- [The CEO’s AI playbook: Why decision architecture beats model selection](/blog/ceo-ai-playbook-decision-architecture.md)
- [1. Extract and chunk the PDF.](/blog/chat-with-pdf.md)
- [Complete Guide To Pdfjs](/blog/complete-guide-to-pdfjs.md)
- [Construction Document Data Extraction](/blog/construction-document-data-extraction.md)
- [Convert One Drive Files To Pdf In Sharepoint](/blog/convert-one-drive-files-to-pdf-in-sharepoint.md)
- [Create And Edit Pdfs In Flutter](/blog/create-and-edit-pdfs-in-flutter.md)
- [Create Pdfs With React](/blog/create-pdfs-with-react.md)
- [Creating A Document Scanner With Ocr In Python](/blog/creating-a-document-scanner-with-ocr-in-python.md)
- [Creating And Filling Pdf Forms Programmatically In Javascript](/blog/creating-and-filling-pdf-forms-programmatically-in-javascript.md)
- [The CTO’s AI playbook: Why accountability architecture beats orchestration](/blog/cto-ai-playbook-accountability-architecture.md)
- [Digital Signatures](/blog/digital-signatures.md)
- [Digital Workflow Automation](/blog/digital-workflow-automation.md)
- [Document Ai Vs Ocr](/blog/document-ai-vs-ocr.md)
- [Document Viewer](/blog/document-viewer.md)
- [Document Watermarking](/blog/document-watermarking.md)
- [Emerging threats: Your logging system may be an agentic threat vector](/blog/emerging-threats-your-logging-system.md)
- [app.py](/blog/extract-text-from-pdf-using-python.md)
- [How To Add Digital Signature To Pdf Using React](/blog/how-to-add-digital-signature-to-pdf-using-react.md)
- [How To Build A Dotnet Maui Pdf Viewer](/blog/how-to-build-a-dotnet-maui-pdf-viewer.md)
- [How To Build A Flutter Pdf Viewer](/blog/how-to-build-a-flutter-pdf-viewer.md)
- [or](/blog/how-to-build-a-javascript-pdf-viewer-with-pdfjs.md)
- [How To Build A Javascript Pdf Viewer](/blog/how-to-build-a-javascript-pdf-viewer.md)
- [or](/blog/how-to-build-a-nextjs-pdf-viewer.md)
- [How To Build A Powerpoint Viewer Using Javascript](/blog/how-to-build-a-powerpoint-viewer-using-javascript.md)
- [Using Yarn](/blog/how-to-build-a-react-excel-viewer.md)
- [How To Build A React Native Pdf Viewer](/blog/how-to-build-a-react-native-pdf-viewer.md)
- [How To Build A React Powerpoint Viewer](/blog/how-to-build-a-react-powerpoint-viewer.md)
- [How To Build A Reactjs File Viewer](/blog/how-to-build-a-reactjs-file-viewer.md)
- [or](/blog/how-to-build-a-reactjs-pdf-viewer-with-react-pdf.md)
- [or](/blog/how-to-build-a-reactjs-pdf-viewer.md)
- [How To Build A Reactjs Viewer With Pdfjs](/blog/how-to-build-a-reactjs-viewer-with-pdfjs.md)
- [How To Build A Vuejs Pdf Viewer With Pdfjs](/blog/how-to-build-a-vuejs-pdf-viewer-with-pdfjs.md)
- [How To Build A Vuejs Pdf Viewer](/blog/how-to-build-a-vuejs-pdf-viewer.md)
- [How To Build An Android Pdf Viewer](/blog/how-to-build-an-android-pdf-viewer.md)
- [How To Build An Angular Pdf Viewer With Ng2 Pdf Viewer](/blog/how-to-build-an-angular-pdf-viewer-with-ng2-pdf-viewer.md)
- [How To Build An Angular Pdf Viewer With Pdfjs](/blog/how-to-build-an-angular-pdf-viewer-with-pdfjs.md)
- [How To Convert Docx To Pdf Using Javascript](/blog/how-to-convert-docx-to-pdf-using-javascript.md)
- [How To Convert Docx To Pdf Using Python](/blog/how-to-convert-docx-to-pdf-using-python.md)
- [How To Convert Html To Pdf Using Html2pdf](/blog/how-to-convert-html-to-pdf-using-html2pdf.md)
- [or](/blog/how-to-convert-html-to-pdf-using-react.md)
- [or](/blog/how-to-convert-html-to-pdf-using-wkhtmltopdf-and-python.md)
- [How To Convert Word To Pdf In Nodejs](/blog/how-to-convert-word-to-pdf-in-nodejs.md)
- [or](/blog/how-to-create-a-react-js-signature-pad.md)
- [How To Create Pdfs With React To Pdf](/blog/how-to-create-pdfs-with-react-to-pdf.md)
- [How To Edit Pdfs Using Ios Pdf Library](/blog/how-to-edit-pdfs-using-ios-pdf-library.md)
- [How To Embed A Pdf Viewer In Your Website](/blog/how-to-embed-a-pdf-viewer-in-your-website.md)
- [How To Generate Pdf From Html With Nodejs](/blog/how-to-generate-pdf-from-html-with-nodejs.md)
- [base_url tells WeasyPrint where to resolve relative asset paths](/blog/how-to-generate-pdf-reports-from-html-in-python.md)
- [Open an image.](/blog/how-to-use-tesseract-ocr-in-python.md)
- [From an HTML string.](/blog/html-in-pdf-format.md)
- [Javascript Pdf Libraries](/blog/javascript-pdf-libraries.md)
- [Linearized Pdf](/blog/linearized-pdf.md)
- [Swift Package Manager](/blog/mobile-pdf-sdk.md)
- [`elements` come from your document parser — each has a type and content.](/blog/multimodal-rag.md)
- [Nutrient Vs Conga Composer](/blog/nutrient-vs-conga-composer.md)
- [Online Document Viewer](/blog/online-document-viewer.md)
- [Open Pdf In Your Web App](/blog/open-pdf-in-your-web-app.md)
- [Pdf Extraction Benchmark Opendataloader Bench](/blog/pdf-extraction-benchmark-opendataloader-bench.md)
- [Pdf Page Labels](/blog/pdf-page-labels.md)
- [Pdf Sdk Compliance Security Checklist](/blog/pdf-sdk-compliance-security-checklist.md)
- [Pdf Sdk Performance Benchmark](/blog/pdf-sdk-performance-benchmark.md)
- [Pdf Ua Compliance Guide](/blog/pdf-ua-compliance-guide.md)
- [Pdfjs Annotation Editor Layer](/blog/pdfjs-annotation-editor-layer.md)
- [Pdfjs Area Annotations Canvas Capture](/blog/pdfjs-area-annotations-canvas-capture.md)
- [Pdfjs Coordinate Systems Pdf To Screen](/blog/pdfjs-coordinate-systems-pdf-to-screen.md)
- [Pdfjs Eventbus Guide](/blog/pdfjs-eventbus-guide.md)
- [Pdfjs Limitations Commercial Upgrade](/blog/pdfjs-limitations-commercial-upgrade.md)
- [Pdfjs Native Annotation Layer Forms](/blog/pdfjs-native-annotation-layer-forms.md)
- [Pdfjs Navigation Zoom Rotation](/blog/pdfjs-navigation-zoom-rotation.md)
- [Pdfjs Pdf Page Manipulation Pdf Lib](/blog/pdfjs-pdf-page-manipulation-pdf-lib.md)
- [Pdfjs React Viewer Setup](/blog/pdfjs-react-viewer-setup.md)
- [Pdfjs Rendering Overlays React Portals](/blog/pdfjs-rendering-overlays-react-portals.md)
- [Pdfjs Server Side Text Extraction](/blog/pdfjs-server-side-text-extraction.md)
- [Pdfjs Sticky Note Annotations](/blog/pdfjs-sticky-note-annotations.md)
- [Pdfjs Text Highlight Annotations](/blog/pdfjs-text-highlight-annotations.md)
- [Pdfjs Text Search Pdffindcontroller](/blog/pdfjs-text-search-pdffindcontroller.md)
- [Pdfjs Thumbnail Sidebar](/blog/pdfjs-thumbnail-sidebar.md)
- [Process Flows](/blog/process-flows.md)
- [React Native Pdf Annotation](/blog/react-native-pdf-annotation.md)
- [or](/blog/sample-blog-updated.md)
- [Add DWS MCP Server to your Claude Code project.](/blog/teaching-llms-to-read-pdfs.md)
- [Open an image file.](/blog/tesseract-python-guide.md)
- [Convert an HTML file to PDF.](/blog/top-ten-ways-to-convert-html-to-pdf.md)
- [Vector Pdf](/blog/vector-pdf.md)
- [Wcag2 Accessibility Requirements Documents](/blog/wcag2-accessibility-requirements-documents.md)
- [Web Sdk Is Now Headless](/blog/web-sdk-is-now-headless.md)
- [What Are Annotations](/blog/what-are-annotations.md)
- [What Is A Vpat](/blog/what-is-a-vpat.md)
- [What Is Pdf Ua](/blog/what-is-pdf-ua.md)
- [Why Pdfium Is A Trusted Platform For Pdf Rendering](/blog/why-pdfium-is-a-trusted-platform-for-pdf-rendering.md)
- [Why Your Ai Agent Hallucinates Pdf Table Data](/blog/why-your-ai-agent-hallucinates-pdf-table-data.md)