Compare/MuPDF

PDFluent vs MuPDF

MuPDF Core is the fast, mature C library behind PyMuPDF, MuPDF.js, and MuPDF.NET. PDFluent is a Rust core with six official bindings — Rust, Python, Node.js, .NET, Java, and WebAssembly — from one codebase.

MuPDF Core, made by Artifex Software, is the C library behind PyMuPDF, MuPDF.js, and MuPDF.NET — four separate language bindings built around one C core. PDFluent takes the same one-core approach, but the core itself is Rust, and the same memory-safety guarantees apply across all six official bindings: Rust, Python, Node.js, .NET, Java, and WebAssembly.

Side-by-side

PDFluent (Rust)
use pdfluent::PdfDocument;

fn main() -> pdfluent::Result<()> {
    let doc = PdfDocument::open("invoice.pdf")?;

    for i in 0..doc.page_count() {
        let text = doc.page(i)?.text()?;
        println!("--- Page {} ---\n{}", i + 1, text);
    }

    Ok(())
}
MuPDF (C)
#include <mupdf/fitz.h>

int main(void) {
    fz_context *ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
    fz_register_document_handlers(ctx);
    fz_document *doc = fz_open_document(ctx, "invoice.pdf");

    int n = fz_count_pages(ctx, doc);
    for (int i = 0; i < n; i++) {
        fz_stext_page *text = fz_new_stext_page_from_page_number(ctx, doc, i, NULL);
        fz_print_stext_page_as_text(ctx, fz_stdout(ctx), text);
    }
    return 0;
}

Feature comparison

FeaturePDFluentMuPDF
License modelAGPL v3 or commercialAGPL v3 or commercial (via Artifex)
Core engine languageRust (memory-safe)C
Official Rust bindings
Official Python bindingsYes — PyMuPDF (separate Artifex product)
Official Node.js bindingsYes — MuPDF.js (separate Artifex product)
Official .NET bindingsYes — MuPDF.NET (separate Artifex product)
Official Java bindings
WebAssembly (runs in the browser)Via MuPDF.js, not MuPDF Core directly
One core, one set of bindings from the same vendorYes — Rust core, 6 bindings, same team4 separate named products (Core, PyMuPDF, MuPDF.js, MuPDF.NET) from Artifex
PDF parsing & text extraction
PDF rendering to image
PDF creation & editing
Merge / split PDFs
Redaction
Annotations / markup
Digital signaturesPAdES, CMS, PKCS12, TSAYes — cryptographic signing support
XFA forms (dynamic reflow, FormCalc)Not listed on mupdf.com's feature pages
PDF/A validation & conversionNot a stated goal
OCR enginePython only in 1.1.0, opt-in, off by default, via system tesseract.Not part of MuPDF Core
Published, self-service pricingContact Artifex sales

Pros and cons

PDFluent
  • One Rust core, six official bindings: Rust, Python, Node.js, .NET, Java, WASM
  • Native XFA dynamic forms with FormCalc execution
  • Native PDF/A validation and conversion
  • OCR is opt-in from Python in 1.1.0, off by default, via system tesseract.
  • Newer than MuPDF, which has over two decades of production use
  • Smaller community and fewer third-party tutorials so far
MuPDF
  • Over two decades of production hardening across millions of installs
  • Four official products (Core, PyMuPDF, MuPDF.js, MuPDF.NET) covering C, Python, Node.js, and C#
  • Extensive documentation and a large existing user base
  • Free under the AGPL for open-source use
  • No official Rust or Java bindings
  • MuPDF Core is written in C; PDFluent's core is written in Rust.
  • No XFA form support found on Artifex's own product pages
  • Four separate products to track instead of one core with uniform bindings

When to use each

Choose PDFluent

Choose PDFluent if you want memory-safety guarantees across every language you use, native XFA forms or PDF/A validation without extra libraries, or a single vendor maintaining every binding from one core.

Choose MuPDF

Choose MuPDF if you're already standardized on Artifex's product family, need the deepest possible track record in a C-based PDF engine, or specifically need one of their four separate products as-is.

Bottom line

MuPDF Core is a fast, proven C library with over two decades of use and the same AGPL-or-commercial model PDFluent uses. If you're already committed to Artifex's product family — MuPDF Core in C plus PyMuPDF, MuPDF.js, or MuPDF.NET for other languages — it's a solid, well-tested choice with a long track record. PDFluent's bet is different: one Rust core with six official bindings built and maintained by the same team, plus native XFA dynamic forms and PDF/A validation that aren't part of MuPDF's stated feature set.

Frequently asked questions

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PyMuPDF and MuPDF are trademarks of Artifex Software, Inc. PDFluent is an independent product of Innovation Trigger B.V. and is not affiliated with or endorsed by Artifex.