License initialization

Get a trial key

A free public trial license is available for every new device for first use of Dynamsoft Document Normalizer. The public trial license is the default key used in samples. You can also find the public trial license on the following parts of this page.
If your free key is expired, please visit Private Trial License Page to get a 30-day trial extension.

Get a full license

Initialize the license

The following code snippets are using the public trial license to initialize the license. You can replace the public trial license with your own license key.

JavaScript
Java-Android
Objective-C
Swift
C
C++

Dynamsoft.License.LicenseManager.initLicense("YOUR-LICENSE-KEY");

LicenseManager.initLicense("YOUR-LICENSE-KEY", MainActivity.this, new LicenseVerificationListener() {
@Override
public void onLicenseVerified(boolean b, Exception e) {
    if(!b && e != null){
        e.printStackTrace();
    }
}
});

[DSLicenseManager initLicense:@"YOUR-LICENSE-KEY" verificationDelegate:self];
- (void)onLicenseVerified:(bool)isSuccess error:(NSError *)error{
if(!isSuccess && error != nil){
    NSString* msg = error.userInfo[NSUnderlyingErrorKey];
    NSLog(@"%@", msg);
}
}

LicenseManager.initLicense("YOUR-LICENSE-KEY",verificationDelegate:self)
func onLicenseVerified(_ isSuccess: Bool, error: Error?) {
if(!isSuccess && error != nil){
    let err = error as NSError?
    let msg = err!.userInfo[NSUnderlyingErrorKey] as? String
    print(msg ?? "")
}
}

char errorMessage[256];
DC_InitLicense("YOUR-LICENSE-KEY", errorMessage, 256);

char errorMessage[256];
CLicenseManager::InitLicense("YOUR-LICENSE-KEY", errorMessage, 256);