Convert CGM to JPEG in Java & J2SE Applications

Convert Password Protected CGM to JPEG

Accurately load and convert documents that are protected with a password within your Java based applications. The file format conversion API also supports rendering remote documents from different sources including S3, Blob, FTP, Stream, URL or a local disk.

Create new instance of Converter class and pass source document path
Instantiate the proper ConvertOptions class e.g. (PdfConvertOptions, WordProcessingConvertOptions, SpreadsheetConvertOptions etc.)
Call convert method of Converter class instance and pass filename for the converted document

Source Document Information Extraction

The documents information extraction feature not only allows getting the basic information about the source document file but it also supports extracting some valuable file-format specific information such as project start and end dates of a Microsoft Project file, any printing restrictions on a PDF document, list of folders enclosed in an Outlook data file etc.

Convert popular document file formats on different operating systems such as Windows, Linux or macOS while using development environments such as NetBeans, IntelliJ IDEA and Eclipse.

Convert Specific Word Pages to PDF in Java

Java document conversion API allows you to choose selected pages from the source document and accurately convert to the supported document format. The code example below shows how to convert the 1st and 4th pages of a Word document to the resultant PDF file.

Create a new instance of Converter class and load input (Word) document
Instantiate the proper ConvertOptions class e.g. (PdfConvertOptions, WordProcessingConvertOptions, SpreadsheetConvertOptions etc)
Set setPages property of the ConvertOptions instance and mention specific page number to be converted
Call convert method of Converter class instance and pass filename (PDF) for the converted document

Caching Converted Document Results

In some cases, the converted document size is bigger and it takes time to be converted. The document conversion library offers the caching feature to efficiently manage such situations and speed up the repetitive conversion process. Enable the ICache interface to work with custom cache implementation using the extension point and control the cache conversion, as you prefer.

The conversion result is saved to the local drive by default but any type of cache storage can be supported by implementing the appropriate interfaces such as Amazon S3, Dropbox, Google Drive, Windows Azure, Reddis or any other.

What is CGM file format?

CGM (Computer Graphics Metafile) is a vector-based graphics file format that was developed by the International Standards Organization (ISO) in 1982. It is used for storing and exchanging 2D vector graphics, text, and bitmaps. CGM files are widely used in many industries such as engineering, mechanics, architecture and 3D modeling. CGM files typically have the file extension .cgm or .cg and can be opened and edited with a number of software programs such as Adobe Illustrator and CorelDraw. CGM files are considered to be superior to other standard graphics formats such as JPG, GIF and BMP because they are more efficient, allowing for better image quality and smaller file sizes. Additionally, CGM files can be used across different computer platforms and operate properly on multiple operating systems such as Windows and Mac OS. Overall, CGM files are a reliable and efficient way of storing and exchanging vector graphics, text, and bitmaps. They are widely used all over the world, and can be found in many different industries.

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What is JPEG file format?

JPEG, short for Joint Photographic Experts Group, represents a lossy compression algorithm meticulously crafted to minimize the storage size of digital images. Renowned for its widespread usage in still images and graphics, it holds a prominent position on the web and in digital cameras. Operating on the principle of content analysis, JPEG meticulously measures and evaluates the image’s content before proceeding to compress it, thereby reducing the overall file size. The level of compression can be adjusted to cater to the desired image quality. While JPEG compression typically yields images with lower quality, it achieves remarkably small file sizes, rendering it perfect for online photo sharing.

JPEG’s exceptional popularity is primarily attributed to its ability to strike a balance between image quality and file size. By employing lossy compression techniques, JPEG effectively eliminates certain visual information that may not be noticeable to the human eye. This selective discarding of data ensures substantial reduction in file size while preserving the overall visual integrity to an acceptable level. Consequently, JPEG files are compact and highly efficient in terms of storage and transmission, making them ideal for web-based applications where bandwidth and storage limitations are prevalent.

The adjustable nature of JPEG compression further enhances its versatility. Users have the flexibility to determine the trade-off between file size and image quality by adjusting the compression settings. In scenarios where high image fidelity is of paramount importance, a lower compression level can be selected to preserve intricate details and minimize visual artifacts. Conversely, when the emphasis is on minimizing file size without significant loss in perceived quality, a higher compression level can be applied. This adaptability allows users to tailor the JPEG compression to their specific requirements, ensuring an optimal balance between file size and image quality.

It is noteworthy that while JPEG excels in the realm of digital image compression, it may not be the most suitable choice for all scenarios. Due to its lossy nature, repeatedly compressing and decompressing JPEG files can result in a cumulative loss of image quality. Therefore, it is advisable to exercise caution and refrain from excessive re-compression if preserving the highest possible image fidelity is paramount.

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