Licensing

Sometimes, for the best evaluation outcomes, a hands-on approach might be needed. For this reason, Aspose.Slides provides different purchase plans and also offers a Free Trial and a 30-day Temporary License for evaluation.

Note that there are a number of general policies and practices that guide you on how to evaluate, properly license, and purchase our products. You can find them in the “Purchase Policies and FAQ” section.

Evaluate Aspose.Slides

You can easily download Aspose.Slides for evaluation. The evaluation package is the same as the purchased package. The evaluation version simply becomes licensed after you add a few lines of code to apply the license.

Evaluation Version Limitation

The evaluation version of Aspose.Slides (without a license specified) provides the full product functionality, but it inserts an evaluation watermark at the top of the document on open and save. You are also limited to one slide when extracting texts from presentation slides.

If you want to test Aspose.Slides without the evaluation version limitations, you can request a 30 Day Temporary License. Please refer to How to get a Temporary License? for more information.

About the License

You can easily download an evaluation version of Aspose.Slides for Node.js via Java from its download page. The evaluation version provides absolutely the same capabilities as the licensed version of Aspose.Slides. Furthermore, the evaluation version simply becomes licensed after you purchase a license and add a couple of lines of code to apply the license.

The license is a plain-text XML file that contains details such as the product name, number of developers it is licensed to, subscription expiry date, and so on. The file is digitally signed, so do not modify the file. Even an inadvertent addition of an extra line break to the contents of the file will invalidate it.

To avoid the limitations associated with the evaluation version, you need to set a license before using Aspose.Slides. You are only required to set a license once per application or process.

Purchased License

After purchase, you need to apply the license file or stream.

You need to set the license:

• only once per application domain
• before using any other Aspose.Slides classes

You can find pricing information on the “Pricing Information” page.

Setting a License in Aspose.Slides for Node.js via Java

Licenses can be applied from these locations:

• Explicit path
• Stream
• As a Metered License – a new licensing mechanism

Use the setLicense method to license a component.

While multiple calls to setLicense aren’t harmful, they are a waste of resources (processor).

Applying a License Using a File

This code snippet is used to set a license file:

Node.js

var aspose = aspose || {};

aspose.slides = require("aspose.slides.via.java");

var license = new aspose.slides.License();
license.setLicense("Aspose.Slides.lic");

When calling the setLicense method, the license name should be same as that of your license file. For example, you can change the license file name to “Aspose.Slides.lic.xml”. Then, in your code, you have to pass the new license name (Aspose.Slides.lic.xml) to the setLicense method.

Applying a License from a Stream

This code snippet is used to apply a license from a stream:

Node.js

var aspose = aspose || {};

aspose.slides = require("aspose.slides.via.java");

var license = new aspose.slides.License();

var fs = require("fs");

var readStream = fs.createReadStream("Aspose.Slides.lic");

license.setLicense(readStream, function(err, list) {
    if(err) { 
        console.error(err); return; 
    }});

Apply Metered License

Aspose.Slides allows developers to apply a metered key. This is a new licensing mechanism.

The new licensing mechanism will be used along with the existing licensing method. Those customers who want to be billed based on the use of API features can use the Metered Licensing.

After completing all the necessary steps to obtain this type of license, you will receive the keys, not the license file. This metered key can be applied using the Metered class specially introduced for this purpose.

The following code example shows how to set metered public and private keys:

var aspose = aspose || {};

aspose.slides = require("aspose.slides.via.java");

# Create an instance of CAD Metered class
var metered = new aspose.slides.Metered();

# Access the set_metered_key property and pass public and private keys as parameters
metered.setMeteredKey("*****", "*****");

# Get metered data amount before calling API
var amountbefore = aspose.slides.Metered.getConsumptionQuantity();
# Display information
console.log('Amount Consumed Before: " + amountbefore + "' );

# Load the document from disk.
var pres = new aspose.slides.Presentation();
# Get the page count of document
console.log('Amount Consumed After: " +  pres.getSlides().size()) + "' );
# save as PDF
pres.save("out_pdf.pdf", aspose.slides.SaveFormat.Pdf);

# Get metered data amount After calling API
var amountafter = aspose.slides.Metered.getConsumptionQuantity();
# Display information
console.log('Amount Consumed After: " + amountafter + "' );

Please note that you must have a stable Internet connection for the correct use of the Metered license, since the Metered mechanism requires the constant interaction with our services for correct calculations. For more details, refer to the “Metered Licensing FAQ” section.