README.md

tiny_pdf

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

Click here to read the dev.to post.

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.