tiny_pdf

Tiny, zero-dependency PDF builder for Dart. Write PDF primitives (text, rects, lines, JPEG images) and render markdown into real PDFs.

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Install

dart pub add tiny_pdf

Quick start

import 'dart:io';
import 'package:tiny_pdf/tiny_pdf.dart';

void main() {
	final doc = pdf();

	doc.page((p) {
		p.text('Hello PDF', 72, 700, 24);
		p.rect(72, 660, 200, 40, '#2563eb');
		p.line(72, 640, 272, 640, '#111111', 1);
	});

	final bytes = doc.build();
	File('hello.pdf').writeAsBytesSync(bytes);
}

Markdown to PDF

import 'dart:io';
import 'package:tiny_pdf/tiny_pdf.dart';

void main() {
	final bytes = markdown('# Title\n\n- Bullet one\n- Bullet two');
	File('markdown.pdf').writeAsBytesSync(bytes);
}

Invoice example

See examples/invoice_example.dart for a complete invoice layout; running it writes examples/invoice.pdf.

API

// Create a new PDF document
PDFBuilder doc = pdf();

// Add a page (default 612x792)
doc.page((PageContext p) {
	p.text(String text, double x, double y, double size, [TextOptions? opts]);
	p.rect(double x, double y, double w, double h, String fillColor);
	p.line(double x1, double y1, double x2, double y2, String strokeColor, [double lineWidth = 1]);
	p.image(Uint8List jpegBytes, double x, double y, double w, double h);
});

// Add a page with custom size
doc.page(double width, double height, (PageContext p) { ... });

// Build the PDF and get bytes
Uint8List bytes = doc.build();

// Measure text width in points
double w = measureText('Hello', 12);

// Render markdown to PDF
Uint8List pdfBytes = markdown('# Title', width: 612, height: 792, margin: 72);

// TextOptions
TextOptions(
	align: TextAlign.left|center|right,
	width: double?,
	color: String? // hex color, e.g. '#2563eb'
);

License

MIT License. See LICENSE file for details.