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Simple PDF Compression

Compress PDFs in Flutter with ease. Uses a smarter algorithm to balance file size and quality for optimal compression results.

Features

  • PDF Compression – Compress PDF files with configurable quality settings
  • Smart Defaults – Automatically calculates a suitable compression level when none is specified
  • Customizable - Adjust compression parameters like quality and size thresholds to suit your needs

Getting Started

Add the package to your pubspec.yaml file:

flutter pub add simple_pdf_compression

or

dependencies:
  simple_pdf_compression: ^0.0.2

Then run:

flutter pub get

Usage

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

void main() async {
  final inputPdf = File('/path/to/your/input.pdf');

  final compressedPdf = await compressPdf(
    inputPdf,
    thresholdSize: 500 * 1024, // Optional: 500 KB
    quality: 60,               // Optional: 0 (most compression) to 100 (lowest compression)
  );

  print('Compressed PDF saved at: ${compressedPdf.path}');
  print('Original size: ${inputPdf.lengthSync()} bytes');
  print('Compressed size: ${compressedPdf.lengthSync()} bytes');
}

Additional Information

  • The compressed files are saved to the temporary directory by default
  • Without passing quality the quality of the PDF is worked out and IQR is used to work out an appropriate compression amount.
  • Inspired by @rathorerahul586 package pdf_handler

License

This project is licensed under the MIT License

Libraries

simple_pdf_compression