How to view PLT files
Introduction
PLT and HPG formats are based on the plotter language developed by Hewlett-Packard (HP-GL). These formats are designed for sending information to plotter printers, contain text/binary instructions on HPGL language to draw vector images on paper.
How to view PLT files
The PLT/HPG can be opened with desktop applications like e.g. Autodesk AutoCAD.
In case you need to view a PLT/HPG file in a browser or in a standard image or PDF viewer application, you can convert it to HTML, JPEG, PNG PDF format with GroupDocs.Viewer for Java.
Convert PLT to HTML
To convert PLT/HPG files to HTML with GroupDocs.Viewer for Java use following code:
Viewer viewer = new Viewer("sample.plt");
HtmlViewOptions options = HtmlViewOptions.forEmbeddedResources("output.html");
// options.setCadOptions(CadOptions.forRenderingByScaleFactor(0.7f)); // Render image and reduce it by 30%
// options.setCadOptions(CadOptions.forRenderingByWidthAndHeight(400, 400)); // Render image and set output size to 400x400
// options.setCadOptions(CadOptions.forRenderingByWidth(500)); // Render image, fix width by 500 px and recalculate height
// options.setCadOptions(CadOptions.forRenderingByHeight(500)); // Render image, fix height by 500 px and recalculate width
viewer.view(options);
viewer.close();
The following screenshot shows the output HTML file opened in a browser.
Convert PLT to JPG
To convert PLT/HPG files to JPG with GroupDocs.Viewer for Java use following code:
Viewer viewer = new Viewer("sample.plt");
JpgViewOptions options = new JpgViewOptions("output.html");
// options.setCadOptions(CadOptions.forRenderingByScaleFactor(0.7f)); // Render image and reduce it by 30%
// options.setCadOptions(CadOptions.forRenderingByWidthAndHeight(400, 400)); // Render image and set output size to 400x400
// options.setCadOptions(CadOptions.forRenderingByWidth(500)); // Render image, fix width by 500 px and recalculate height
// options.setCadOptions(CadOptions.forRenderingByHeight(500)); // Render image, fix height by 500 px and recalculate width
viewer.view(options);
viewer.close();
The following screenshot shows the output JPG file opened in a Windows Photo Viewer application.
Convert PLT to PNG
To convert PLT/HPG files to PNG with GroupDocs.Viewer for Java use following code:
Viewer viewer = new Viewer("sample.plt");
PngViewOptions options = new PngViewOptions("output.html");
// options.setCadOptions(CadOptions.forRenderingByScaleFactor(0.7f)); // Render image and reduce it by 30%
// options.setCadOptions(CadOptions.forRenderingByWidthAndHeight(400, 400)); // Render image and set output size to 400x400
// options.setCadOptions(CadOptions.forRenderingByWidth(500)); // Render image, fix width by 500 px and recalculate height
// options.setCadOptions(CadOptions.forRenderingByHeight(500)); // Render image, fix height by 500 px and recalculate width
viewer.view(options);
viewer.close();
The following screenshot shows the output PNG file opened in a Windows Photo Viewer application.
Convert PLT to PDF
To convert PLT/HPG files to PDF with GroupDocs.Viewer for Java use following code:
Viewer viewer = new Viewer("sample.plt");
PdfViewOptions options = new PdfViewOptions("output.pdf");
// options.setCadOptions(CadOptions.forRenderingByScaleFactor(0.7f)); // Render image and reduce it by 30%
// options.setCadOptions(CadOptions.forRenderingByWidthAndHeight(400, 400)); // Render image and set output size to 400x400
// options.setCadOptions(CadOptions.forRenderingByWidth(500)); // Render image, fix width by 500 px and recalculate height
// options.setCadOptions(CadOptions.forRenderingByHeight(500)); // Render image, fix height by 500 px and recalculate width
viewer.view(options);
viewer.close();
The following screenshot shows the output PDF file opened in a browser.
More resources
GitHub Examples
You may easily run the code above and see the feature in action in our GitHub examples:
- GroupDocs.Viewer for Java examples, plugins, and showcase
- Document Viewer for .NET App WebForms UI Modern Example
- Document Viewer for Java App Dropwizard UI Modern Example
- Document Viewer for Java Spring UI Example
- GroupDocs.Viewer for .NET samples, plugins and showcase
- Document Viewer for .NET MVC UI Example
Free Online App
Along with full-featured Java library we provide simple but powerful free Apps. You are welcome to view Word, PDF, Excel, PowerPoint documents with free to use online GroupDocs Viewer App.