Foxit SDK Alternative
Foxit PDF SDK for Web is a WebAssembly-based PDF toolkit: modular components for viewing, annotating, filling, and signing PDFs that you install and wire into your app. It's powerful if you're building a PDF product. If you're embedding form filling and signing into an existing product, the toolkit model adds friction — npm install, license keys, viewer initialization, and your own submission, storage, and notification plumbing. SimplePDF is the finished workflow: one iframe, client-side processing, built-in form submission, webhooks, and bring-your-own-storage. Both run entirely in the browser — the real difference is scope.
What you get with SimplePDF
One iframe, no SDK install
Foxit's Web SDK requires npm install, license key configuration, and viewer initialization per project. SimplePDF is one iframe pointing at your tenant — no package dependencies, no build step, no bundle hit.
Submissions, webhooks, and storage built-in
Foxit hands you rendering and annotation components. You build the submission routing, storage, and notification logic yourself. SimplePDF ships a submissions dashboard, webhook delivery, and BYOS to S3, Azure Blob Storage, and SharePoint.
Transparent pricing
Foxit PDF SDK uses quote-based pricing — you contact sales for a number. SimplePDF is $99–$899/mo flat, published on the pricing page, with no annual commitment on any tier.
Programmatic control on every plan
The iframe postMessage API and the `EmbedPDF` React component let you drive navigation, tool selection, field detection, document extraction, and submission — available on every plan including the free embed. A REST API is included on the Premium plan for server-side automation.
Feature Comparison
| Feature | Foxit PDF SDK for Web | SimplePDF |
|---|---|---|
| Rendering architecture | Client-side (WebAssembly) | Client-side (JavaScript) |
| Integration model | npm install + license key + viewer init | One iframe tag |
| Product scope | PDF toolkit (you build the app) | PDF workflow embed (ready to use) |
| Form filling | Yes | Yes (with auto-detection) |
| Signatures | Yes | Yes (draw, type, upload) |
| Submission handling | Custom (build your own) | Built-in (dashboard + webhooks) |
| Bring your own storage | Custom (build your own) | Built-in (S3, Azure Blob Storage, SharePoint) |
| Programmatic control | Full SDK API surface | iframe + React API (all plans), REST API (Premium) |
| Native mobile SDKs | iOS, Android, Windows, Mac, Linux | Web only (responsive) |
| White-label branding | Yes | Yes (Pro plan and above) |
| Pricing | Quote-based (contact sales) | From $99/mo (published) |
Integration Comparison
// 1. Install the package
// npm install @foxitsoftware/foxit-pdf-sdk-for-web-library
// 2. Configure license and initialize the viewer
import PDFUI from '@foxitsoftware/foxit-pdf-sdk-for-web-library';
const pdfui = new PDFUI({
viewerOptions: {
libPath: '/path/to/foxit/lib',
jr: {
licenseSN: 'YOUR_LICENSE_SN',
licenseKey: 'YOUR_LICENSE_KEY',
},
},
renderTo: document.getElementById('viewer'),
});
pdfui.openPDFByFile(file);
// 3. Build submission, storage, and notification logic yourself.<iframe
src="https://yourcompany.simplepdf.com/editor"
width="100%"
height="800px"
/>Where Foxit is the better fit
- You need native mobile SDKs (iOS, Android) or desktop platforms (Windows, Mac, Linux) from the same vendor
- You're building a standalone PDF product and need deep manipulation: programmatic text editing, redaction, PDF/A export, optimization, or compression
- You have dedicated engineering to build and maintain the submission, storage, and notification layer around the SDK
- You need a desktop PDF editor alongside the web SDK (Foxit PDF Editor) from one vendor relationship
- You have strict rendering-fidelity requirements for complex documents with advanced typography or embedded fonts
Which SimplePDF product fits?
Embed
For teams that need PDF editing embedded in their product without building a workflow layer. One iframe, client-side processing, submissions and webhooks included.
Learn about EmbedPortal
For teams that need to collect filled PDFs without any code integration. Share a link, users fill the PDF in their browser, submissions land in your dashboard.
Learn about PortalPDF-to-Web-Forms
Convert static PDFs into web forms automatically. No SDK or infrastructure required for form creation or submission collection.
Learn about PDF-to-Web-FormsGot any questions?
Is Foxit PDF SDK for Web client-side or server-side?
Client-side. Foxit PDF SDK for Web uses a WebAssembly rendering engine compiled via emscripten, and PDFs are processed in the browser. SimplePDF is also client-side. The architectural difference between the two is not where rendering happens — it's scope. Foxit is a toolkit you install and wire up; SimplePDF is a finished workflow you embed as an iframe.
When is SimplePDF a better fit than Foxit PDF SDK?
When you need PDF form filling, signing, and submission inside an existing product without building the surrounding workflow. Foxit ships rendering and annotation components; you build submission handling, storage, and notifications on top. SimplePDF ships that layer — submissions dashboard, webhooks, and bring-your-own-storage for S3, Azure Blob Storage, and SharePoint — so integration is minutes, not weeks.
When should I pick Foxit PDF SDK instead?
If you need native mobile or desktop SDKs, deep PDF manipulation (programmatic text editing, redaction, OCR, PDF/A export), or you're building a standalone PDF product where the SDK surface is the feature set — Foxit is the right call. SimplePDF is a focused workflow embed, not a PDF toolkit.
Does SimplePDF support programmatic control like Foxit's SDK?
Yes, at a focused scope. SimplePDF exposes a postMessage iframe API and the `EmbedPDF` React component on every plan, covering navigation, tool selection, field detection and removal, document content extraction, and submission. A REST API is available on the Premium plan for server-side automation. Foxit's SDK has a broader method surface because it's a full PDF toolkit — SimplePDF covers the workflow-critical actions most embedders need without the rest of the toolkit's weight.