PDF.js Express
PDF.js Express is a commercial JavaScript SDK, owned by Apryse, that wraps a React UI around Mozilla's open-source PDF.js engine to deliver in-browser PDF viewing, annotation, form filling, e-signatures, and measurement tools to software developers and SaaS companies via a product-led, NPM-distributed go-to-market.
- Company typePrivate
- Founded2019
- HeadquartersVancouver, Canada
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What PDF.js Express does
PDF.js Express is a commercial software development kit (SDK) product owned by Apryse (formerly PDFTron), providing a JavaScript-based PDF viewer that wraps a proprietary React user interface around Mozilla's open-source PDF.js rendering engine. The product is positioned for web developers and software companies that need to embed PDF viewing, annotation, form-filling, e-signature, measurement, and real-time collaboration capabilities into their applications without building from open-source PDF.js or licensing a full enterprise document platform. Two primary SKUs are offered: PDF.js Express Viewer, a free in-browser viewer with text search, text selection, and high-fidelity zooming up to +6400%, and PDF.js Express Plus, a paid commercial tier priced at USD $595/month (or $7,130/year with a 15% annual discount) that unlocks 26 pre-built annotation types, programmable form filling, hand-drawn signatures, measurement tools, and a REST API for server-side operations such as XFDF merging and watermarking on a usage-based pricing schedule.
The SDK is distributed via NPM packages and direct download, with framework-specific guides for React, Angular, Vue, Svelte, and Blazor, and is supported by a community forum and developer documentation. Go-to-market is product-led: developers self-serve from the website or NPM, evaluate using the free tier, and upgrade to Plus for commercial features, with a documented migration path to the parent Apryse Document Platform for enterprise-scale deployments requiring 200+ file formats (including MS Office and CAD), custom licensing, white labeling, and Salesforce integration. PDF.js Express serves customers across software, education, fintech, healthcare, and legal verticals, reporting more than 5,000 customers including Fortune 500 enterprises, government institutions, and start-ups. The product is headquartered in Vancouver, Canada, and operates as a subsidiary of Apryse, a private company originally founded in 1998 as PDFTron.
Revenue mechanics combine a flat monthly subscription for the Plus tier with usage-based pricing for the server-side Utility API ($49 per 5,000 actions beyond a free monthly allowance of 500 actions), and customer relationships are managed directly through the website with domain-bound license keys. No external funding rounds, management team disclosures, or product-level revenue figures are publicly available for PDF.js Express, and the product is best analyzed as a developer-acquisition funnel feeding the parent Apryse enterprise business rather than as a standalone reporting entity.
PDF.js Express firmographics
Firmographics- Name
- PDF.js Express
- Legal name
- Apryse
- Website
- https://pdfjs.express
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- PDF.js Express is a commercial JavaScript SDK, owned by Apryse, that wraps a React UI around Mozilla's open-source PDF.js engine to deliver in-browser PDF viewing, annotation, form filling, e-signatures, and measurement tools to software developers and SaaS companies via a product-led, NPM-distributed go-to-market.
- Ownership category
- akta.pro rank
Where PDF.js Express is headquartered
LocationHeadquarters
- HQ city
- Vancouver
- HQ country
- Canada
- HQ region
- North America
Offices1 record
Markets served
PDF.js Express business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations
Revenue model
- PDF.js Express Plus Subscription: Commercial subscription at USD $595/month (billed monthly) or $7,130/year (15% annual discount). Includes all annotation, form filling, and e-signature features plus professional documentation and community support.
- PDF.js Express Viewer (Free): Free in-browser PDF viewer with basic viewing features including text search, text select, and high-fidelity zooming. Used as freemium entry point to drive upgrades to Plus tier.
- REST API Usage: Server-side annotation merge/extract operations billed per action: 0-500 actions free, then $49 per 5,000 actions. 50,000+ actions require contacting sales for custom pricing.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free PDF viewing for commercial and personal use |
| Subscription | Monthly | Full annotation and form capabilities at $595/month |
| Subscription | Multi-year contract | Enterprise document platform upgrade path |
| Usage-based | Pay-as-you-go | Usage-based server-side API pricing |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels6 records
PDF.js Express product offering
Product offeringCore offering
PDF.js Express is a commercial JavaScript SDK that wraps Mozilla's open-source PDF.js rendering engine with a proprietary React-based UI to deliver out-of-the-box PDF viewing, annotation, form filling, and e-signature capabilities for web applications. It is sold primarily to developers and software companies via a free Viewer tier and a paid Plus subscription, with an optional usage-based REST API for server-side document operations.
Product overview
PDF.js Express is a commercial PDF.js-based viewer platform developed by Apryse, offering two product tiers: PDF.js Express Viewer (a free in-browser PDF viewer with basic features like text search and zooming) and PDF.js Express Plus (a paid commercial version adding annotation, form filling, e-signature, and measurement capabilities). The platform provides a JavaScript SDK compatible with React, Angular, Vue, Svelte, and Blazor frameworks, along with an optional Utility REST API for server-side operations like merging annotations and watermarking documents.
Differentiator
Problem solved
Functional benefit
Brands
- PDF.js Express Plus: Commercial PDF web viewer with annotation, e-signatures, and form filling capabilities.
- PDF.js Express Viewer
Products and services
- PDF.js Express Plus Commercial JavaScript SDK for web applications that adds 26 pre-built PDF annotations, form filling with validation, e-signatures, measurement tools, real-time collaboration, and UI customization on top of Mozilla's PDF.js engine. Priced at USD $595/month with a 15% annual discount. Targets developers and software companies building document workflows.
- PDF.js Express Viewer Free in-browser PDF viewer with customizable UI, featuring text search, text select, and high-fidelity zooming up to +6400%. Requires a free license key for production use and serves as the freemium entry point to PDF.js Express Plus.
- PDF.js Express Utility API REST API for server-side document operations including merging XFDF annotations into PDFs, extracting annotations, watermarking documents, and file management. Available for PDF.js Express Plus subscribers with 0-500 free actions monthly, then $49 per 5,000 actions.
Quantifiable outcome
- Reduces development time with step-by-step guides and pre-built components
- +1 more outcomes
Companies that use PDF.js Express
Customer profileNamed customers3 records
Segments6 records
Ideal customer profiles2 records
PDF.js Express technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
Feature6 records
PDF.js Express partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Mozilla Foundation (PDF.js Project)corePDF.js Express is built upon Mozilla's open-source PDF.js rendering engine. The product wraps a commercial React UI around the PDF.js core while maintaining compatibility with the PDF.js ecosystem and community. This is a foundational technology dependency rather than a formal partnership.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
PDF.js Express competitors and assessment
Company assessmentDirect peers
- Foxit PDF SDK: Foxit sells a commercial PDF SDK with viewer, annotation, form-fill, and signature components across web and mobile, directly competing with PDF.js Express in the embedded PDF SDK market.
- Aspose.PDF: Aspose offers a commercial PDF processing SDK with viewer, form, and signature capabilities for .NET, Java, and web platforms — competing for developer mindshare in the embedded PDF tooling category.
- Syncfusion PDF Viewer: Syncfusion provides a commercial PDF Viewer SDK for web (including JavaScript frameworks) with annotation and form-filling capabilities, positioning similarly in the developer-embedded document viewer market.
- Adobe PDF Embed API: Adobe's developer PDF Embed API provides a free, JS-based PDF viewer that can be extended via Adobe Document Services for annotation and signing — the most direct competitive alternative for developers embedding PDF viewing in web apps.
- Accusoft (ImageGear): Accusoft's ImageGear line offers PDF viewing, annotation, and form-filling SDK components primarily for .NET and web — a comparable commercial PDF/document SDK targeting developers and ISVs.
- Nutrient (formerly PSPDFKit): Nutrient offers a commercial PDF SDK/web viewer with annotation, form filling, and digital signatures for embedding in web and mobile apps — directly competing with PDF.js Express on developer-focused embedded PDF workflows.
- GroupDocs.Viewer: GroupDocs provides a developer-oriented document viewer SDK with PDF and other format support, addressing the same problem (embedding document viewing/annotation into web apps) as PDF.js Express.
- Progress Telerik PDFViewer: Telerik/Progress sells an embeddable PDF Viewer control for web applications with annotation features, targeting the same ISV/enterprise developer persona as PDF.js Express.
- LEADTOOLS PDF SDK: LEADTOOLS ships a commercial PDF SDK with viewing, annotation, and form-fill modules targeted at document workflow integrators — comparable in scope and developer orientation to PDF.js Express.
Broad incumbents
- Apryse WebViewer: Apryse's enterprise-tier WebViewer is the parent company's broader PDF/document SDK with 200+ format support and Salesforce integration — overlapping with PDF.js Express within the same vendor's portfolio and representing the natural upsell target.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
PDF.js Express social profiles
Digital presencePDF.js Express financial estimates
Financial estimateRevenue estimate
Valuation estimate
PDF.js Express leadership team
Management profileNumber of profiles
PDF.js Express funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
PDF.js Express M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about PDF.js Express
What does PDF.js Express do?
PDF.js Express is a commercial JavaScript SDK that wraps Mozilla's open-source PDF.js rendering engine with a proprietary React-based UI to deliver out-of-the-box PDF viewing, annotation, form filling, and e-signature capabilities for web applications. It is sold primarily to developers and software companies via a free Viewer tier and a paid Plus subscription, with an optional usage-based REST API for server-side document operations.
Is PDF.js Express a public or private company?
PDF.js Express is a private company. It is classified as corporate owned and is currently operating.
When was PDF.js Express founded?
PDF.js Express was founded in 2019. It employs 51 to 100 people.
Where is PDF.js Express based?
PDF.js Express is headquartered in Vancouver, Canada, in the North America region.
How does PDF.js Express make money?
Three revenue lines are on record. PDF.js Express Plus Subscription is the primary driver. The others are PDF.js Express Viewer (Free) and REST API Usage.
Who are PDF.js Express's main competitors?
Direct peers on record are Foxit PDF SDK, Aspose.PDF, Syncfusion PDF Viewer, Adobe PDF Embed API, Accusoft (ImageGear), Nutrient (formerly PSPDFKit), GroupDocs.Viewer, Progress Telerik PDFViewer and LEADTOOLS PDF SDK. Apryse WebViewer is listed as a broad incumbent.
Does PDF.js Express have an API?
Yes. PDF.js Express REST API for server-side document operations including merging annotations (XFDF), setting annotations, extracting annotations, watermarking documents, and deleting files. The API is available for PDF.js Express Plus subscribers with 0-500 free actions monthly, then $49 per 5000 actions. Includes a utility package to help manage file uploads and authentication. Developer documentation is at pdfjs.express/documentation/utils.