Resize Image with Format Change Introduction This article explains how to resize an existing image and save it in another format. You can resize an image by specifying the value of new width and new height parameters. There are two APIs to resize an image:
The first API expects you to first upload an image to Cloud Storage then pass its name in the API URL. After updating the image parameters, the API returns the updated image in the response. If you would like to save the updated image on the Cloud Storage, you explicitly need to do this as shown in the below examples.
On the other hand, with the second API, you can directly pass the image in the request body. It also lets you save the updated image on the Cloud Storage by specifying the outPath parameter value. However, if you do not specify the value, the response contains a streamed image.
Please check Common Operations Format Support Map to know the supported conversion formats.
Resource URL With Swagger UI you can call the REST API directly from the browser. Description of API parameters are also given there.
cURL Examples
Cloud SDKs Using an SDK (API client) is the quickest way for a developer to speed up the development. An SDK takes care of a lot of low-level details of making requests and handling responses and lets you focus on writing code specific to your particular project. Check out our GitHub repository for a complete list of Aspose.Imaging Cloud SDKs along with working examples, to get you started in no time. Please check Available SDKs article to learn how to add an SDK to your project.
SDK Examples
.NET
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// For complete examples and data files, please go to https://github.com/aspose-imaging-cloud/aspose-imaging-cloud-dotnet
public void ResizeImageFromStorage()
{
// Input formats could be one of the following:
// BMP, GIF, DJVU, WMF, EMF, JPEG, JPEG2000, PSD, TIFF, WEBP, PNG, DICOM, CDR, CMX, ODG, DNG and SVG
string fileName = "Sample.psd";
// Upload local image to Cloud Storage
using (FileStream localInputImage = File.OpenRead(ImagingBase.PathToDataFiles + fileName))
{
var uploadFileRequest = new UploadFileRequest(fileName, localInputImage);
FilesUploadResult result = this.ImagingApi.UploadFile(uploadFileRequest);
}
// Please refer to https://docs.aspose.cloud/display/imagingcloud/Supported+File+Formats#SupportedFileFormats-Resize
// for possible output formats
string format = "gif";
int? newWidth = 100;
int? newHeight = 150;
string folder = null; // Folder with image to process.
string storage = null; // We are using default Cloud Storage
ResizeImageRequest resizeImageRequest = new ResizeImageRequest(fileName, format, newWidth,
newHeight, folder, storage);
Stream updatedImage = this.ImagingApi.ResizeImage(resizeImageRequest);
// Save updated image to local storage
using (var fileStream = File.Create(ImagingBase.PathToDataFiles + "Sample_out." + format))
{
updatedImage.Seek(0, SeekOrigin.Begin);
updatedImage.CopyTo(fileStream);
}
}
Java
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String APP_KEY = ""; // Get AppKey and AppSID from https:dashboard.aspose.cloud/
String APP_SID = ""; // Get AppKey and AppSID from https:dashboard.aspose.cloud/
String DATA_PATH = "src/main/resources/";
ImagingApi imagingApi = new ImagingApi(APP_KEY, APP_SID);
String fileName = "Sample.psd";
try {
// Upload local image to Cloud Storage
File inputFile = new File(Main.DATA_PATH + fileName);
FileInputStream localInputImageStream = new FileInputStream(inputFile);
byte[] localInputImage = IOUtils.toByteArray(localInputImageStream);
UploadFileRequest uploadFileRequest = new UploadFileRequest(fileName, localInputImage, null);
FilesUploadResult result = imagingApi.uploadFile(uploadFileRequest);
String format = "gif";
Integer newWidth = 100;
Integer newHeight = 150;
String outPath = null; // Path to updated file (if this is empty, response contains streamed image).
String folder = null; // Folder with image to process.
String storage = null; // We are using default Cloud Storage
GetImageResizeRequest getImageResizeRequest = new GetImageResizeRequest(fileName, format, newWidth,
newHeight, outPath, folder, storage);
byte[] updatedImage = imagingApi.getImageResize(getImageResizeRequest);
// Save updated image to local storage
FileOutputStream fos = new FileOutputStream(Main.DATA_PATH + "Sample_out.gif");
fos.write(updatedImage);
fos.close();
} catch (Exception e) {
System.out.println(e.getMessage());
}
.NET
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// For complete examples and data files, please go to https://github.com/aspose-imaging-cloud/aspose-imaging-cloud-dotnet
public void CreateResizedImageFromRequestBody()
{
// Input formats could be one of the following:
// BMP, GIF, DJVU, WMF, EMF, JPEG, JPEG2000, PSD, TIFF, WEBP, PNG, DICOM, CDR, CMX, ODG, DNG and SVG
string fileName = "Sample.psd";
using (FileStream inputImageStream = File.OpenRead(ImagingBase.PathToDataFiles + fileName))
{
// Please refer to https://docs.aspose.cloud/display/imagingcloud/Supported+File+Formats#SupportedFileFormats-Resize
// for possible output formats
string format = "gif";
int? newWidth = 100;
int? newHeight = 150;
string outPath = null; // Path to updated file (if this is empty, response contains streamed image).
string storage = null; // We are using default Cloud Storage
CreateResizedImageRequest createResizedImageRequest = new CreateResizedImageRequest(inputImageStream, format, newWidth,
newHeight, outPath, storage);
Stream updatedImage = this.ImagingApi.CreateResizedImage(createResizedImageRequest);
// Save updated image to local storage
using (var fileStream = File.Create(ImagingBase.PathToDataFiles + "Sample_out." + format))
{
updatedImage.Seek(0, SeekOrigin.Begin);
updatedImage.CopyTo(fileStream);
}
}
}
Java
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String APP_KEY = ""; // Get AppKey and AppSID from https:dashboard.aspose.cloud/
String APP_SID = ""; // Get AppKey and AppSID from https:dashboard.aspose.cloud/
String DATA_PATH = "src/main/resources/";
ImagingApi imagingApi = new ImagingApi(APP_KEY, APP_SID);
try {
File file = new File(Main.DATA_PATH + "Sample.psd");
byte[] imageData = Files.readAllBytes(file.toPath());
String format = "gif";
Integer newWidth = 100;
Integer newHeight = 150;
String outPath = null; // Path to updated file (if this is empty, response contains streamed image).
String folder = null;
String storage = null; // We are using default Cloud Storage
PostImageResizeRequest postImageResizeRequest = new PostImageResizeRequest(imageData, format, newWidth,
newHeight, outPath, storage);
byte[] updatedImage = imagingApi.postImageResize(postImageResizeRequest);
// Save updated image to local storage
FileOutputStream fos = new FileOutputStream(Main.DATA_PATH + "Sample_out.gif");
fos.write(updatedImage);
fos.close();
} catch (Exception e) {
System.out.println(e.getMessage());
}