The enterprise PDF library
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let mut doc = pdf::Document::new();
doc.pdfa_a(); // PDF/A-2a (archival + accessible)
let font = doc.add_font_file("Roboto-Regular.ttf")?;
doc.add_page()
   .text(font, 24.0)
   .at(72.0, 740.0)
   .show("Olá, açúcar — café"); // shaped, kerned, Unicode

let signer = pdf::Signer::from_pkcs8_der(&key, &cert)?;
let signed = pdf::sign(&doc.to_bytes()?, &signer, &Default::default())?;
// pdfsig → "Signature is Valid. Total document signed."

import rustpdf

with rustpdf.Document() as doc:
    doc.pdfa(rustpdf.PdfaLevel.A2A).set_info(title="Report")
    f = doc.add_font_file("Roboto-Regular.ttf")
    doc.add_page()
    doc.show_text(f, 20, 72, 760, "Title", heading_level=1)
    data = doc.to_bytes()

with rustpdf.EditableDoc.load(data) as ed:
    ed.encrypt(owner="owner", method=rustpdf.Encryption.AES256)
    ed.save("secured.pdf")

const { Document, Encryption } = require("rustpdf");

const doc = new Document();
doc.pdfa();                       // PDF/A-2b
const f = doc.addFontFile("Roboto-Regular.ttf");
doc.addPage();
doc.showText(f, 20, 72, 760, "Invoice #1024");
const bytes = doc.toBytes();      // archival-grade PDF

using RustPdf;

using var doc = new Document();
doc.Pdfa(PdfaLevel.A2a).Tagged().SetInfo(title: "Report");
int f = doc.AddFontFile("Roboto-Regular.ttf");
doc.AddPage();
doc.ShowText(f, 20, 72, 760, "Title", headingLevel: 1);
byte[] bytes = doc.ToBytes();      // archival-grade PDF

doc, _ := rustpdf.New()
defer doc.Close()
doc.PdfaLevel(rustpdf.A2a)
doc.Tagged()
doc.SetInfo(rustpdf.Info{Title: "Report"})
f, _ := doc.AddFontFile("Roboto-Regular.ttf")
doc.AddPage()
doc.ShowText(f, 20, 72, 760, "Title", 1) // heading level 1 = H1
data, _ := doc.ToBytes()

use RustPdf\Document;
use RustPdf\PdfaLevel;

$doc = new Document();
$doc->pdfa(PdfaLevel::A2a)->setInfo(title: 'Report');
$f = $doc->addFontFile('Roboto-Regular.ttf');
$doc->addPage()->showText($f, 20, 72, 760, 'Title', 1);
$bytes = $doc->toBytes();          // archival-grade PDF

doc = RustPdf::Document.new
doc.pdfa(RustPdf::Pdfa::A2A).info(title: "Report")
f = doc.add_font_file("Roboto-Regular.ttf")
doc.add_page
   .show_text(f, 20, 72, 760, "Title", heading_level: 1)
data = doc.to_bytes               # archival-grade PDF

try (Document doc = new Document()) {
    doc.pdfa(PdfaLevel.A2A).tagged().setTitle("Report");
    int f = doc.addFontFile("Roboto-Regular.ttf");
    doc.addPage().showText(f, 20, 72, 760, "Title", 1);
    byte[] bytes = doc.toBytes();  // archival-grade PDF
}

# No rebuild. One environment variable activates every binding:
export RUSTPDF_LICENSE="010f0000…"   # the token we email you

# …or point at a file:
export RUSTPDF_LICENSE_FILE=/etc/rustpdf/license.txt

# …or activate in code:
#   pdf::activate_license(token)?            // Rust
#   rustpdf.activate_license(token)          # Python