In the ever-evolving world of software development and digital media, Docker containers have become a cornerstone for creating efficient, scalable, and portable applications. Among the myriad of tools available, Docker container converters stand out as essential utilities for developers and content creators alike. These specialized applications streamline the process of transforming images such as converting PNG to JPEG or vice versa and even handling video format conversions with ease. In this article we’ll dive into the best Docker container converters available today, exploring their features, performance, and how they can supercharge your workflow on a NAS. Whether you’re optimizing images for web use or reformatting videos for different platforms, these tools offer the flexibility and power you need, all within the lightweight, reliable environment of Docker. Let’s get started! Below is a list of free Docker Converter apps that you can install on your Synology NAS.
HandBrake is a open source transcoder for digital video files tool, built by volunteers, for converting video from nearly any format to a selection of modern, widely supported codecs. Note: Install HandBrake on Your Synology NAS.
EBook2Audiobook is a CPU/GPU converter from eBooks to audiobooks with chapters and metadata using Calibre, ffmpeg, XTTSv2, Fairseq and more. It supports voice learning and 1124 languages. Note: Install EBook2Audiobook on Your Synology NAS.
Squoosh is the ultimate image optimizer that allows you to compress and compare images with different codecs in your browser. Smaller images mean faster load times. Squoosh can reduce file size and maintain high quality. Open your image, inspect the differences, then save instantly. Feeling adventurous? Adjust the settings for even smaller files. Worried about privacy? With Squoosh images never leave your device since Squoosh does all the work locally. Note: Install Squoosh on Your Synology NAS.
Morphos server is a self-hosted server to convert different files privately. The project provides an user-friendly web UI. For now, Morphos only supports images. Documents will be added soon. Note: Install Morphos on Your Synology NAS.
Fast Music Remover is a lightweight tool designed to remove music, sound effects and noise from internet media. Processing takes about 8% of the original source length – that’s under 5 seconds for a minute-long video! Support for Realtime processing is currently in the works, and there are many other features and improvements. The primary goal of the project is to enhance the audio tracks of typical mainstream media, such as lecture recordings, field reports and interviews. Note: Install Fast Music Remover on Your Synology NAS.
Mazanoke is a simple image compressor and converter that runs entirely in your browser. No external uploads required. Mazanoke works offline as a web app. Convert between JPG, PNG, and WebP. Note: Install Mazanoke on Your Synology NAS.
ConvertX is a self-hosted, open-source online file conversion tool designed to provide a versatile and private solution for converting files across a wide range of formats. It supports over 1,000 file formats, leveraging powerful libraries and tools such as FFmpeg for video, Pandoc for documents, GraphicsMagick and Vips for images, and Inkscape for vector graphics, among others. This extensive compatibility makes it a comprehensive option for users needing to transform media, documents, 3D assets, and more. Ideal for self-hosting enthusiasts, ConvertX combines functionality with privacy, allowing users to process files locally without relying on third-party services. Note: Install ConvertX on Your Synology NAS.
Reubah is a simple web-based tool for processing images and converting documents, with a simple interface. Note: Install Reubah on Your Synology NAS.
Tdarr is a popular conditional transcoding application for processing large (or small) media libraries. The application comes in the form of a click-to-run web-app, which you run on your own device and access through a web browser. Tdarr uses two popular transcoding applications under the hood: FFmpeg and HandBrake (which itself is built on top of FFmpeg). Note: Install Tdarr on Your Synology NAS.
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This post was updated on Monday / March 31st, 2025 at 12:01 AM