PdfCanvas vs Nutrient
These are different products. Nutrient is a commercial SDK built over a decade for demanding document workflows. PdfCanvas is a focused, MIT-licensed editor that runs in the browser. The choice is about scope and cost, not about who is faster.
Choose Nutrient when
- You need annotation models, forms, redaction, OCR or document comparison.
- You need a vendor contract, SLAs and platform coverage on iOS, Android, Windows, macOS and web.
- You are building a document workflow where the SDK is a core product dependency.
Choose PdfCanvas when
- You need text editing, signatures, shapes, highlights and page management in a web app.
- You want to avoid a per-seat or per-app license and a procurement cycle.
- You want to read and modify the client code, or self-host it.
- The document must not leave the browser and you want that property to be auditable.
Side by side
| Feature | PdfCanvas | Nutrient |
|---|---|---|
| License | MIT | Commercial |
| Cost | Free | Quote-based, annual |
| Platforms | Web | Web, iOS, Android, desktop |
| Forms, OCR, redaction | No | Yes |
| Vendor support | Community | Commercial |
| Source available | Yes | No |
| Upload required | Never | No, on-device SDK |
The honest summary
Nutrient is the safer choice for regulated, multi-platform document products with complex requirements. PdfCanvas is the pragmatic choice for a web tool that needs to edit existing text and export a clean PDF without a license negotiation or an upload.
Do not pick PdfCanvas if forms, redaction or OCR are on the roadmap. Do not pick a commercial SDK if the requirement is a small web editor and the budget is zero.
Frequently asked questions
+Is PdfCanvas a drop-in replacement for Nutrient?
No. The APIs are different and the feature set is smaller. Migration means rewriting the integration and accepting missing features.
+Does Nutrient upload documents?
No, it is an on-device SDK. The difference is licensing and scope, not privacy architecture.
+How big is the PdfCanvas bundle?
The engine is small; PDF.js and the PDFium WebAssembly file dominate the download. Both are served from your own origin and cached by the browser.
+Can I get a support contract?
No. Support happens in the public repository. For mission-critical workflows, budget for internal maintenance or choose a commercial vendor.