Over the years, Microsoft PowerPoint is still the first choice of users for presentations, since its launch. There are a number of use cases when you want to share or distribute your presentation as a PDF. Aspose.Slides Cloud is Microsoft PowerPoint File Format Solution, that enables you to convert your presentation to PDF on any platform without dependency on Microsoft Office or Adobe Acrobat/DC.
In this post, I will show you how effortlessly you can convert a PPTX file to PDF using Aspose.Slides Cloud SDK for .NET. The API is not limited to .NET, but it also provides SDKs for other popular programming languages, i.e. Java, PHP, Ruby, Python, Node.js and go. Please visit GithHub repository for a complete list of SDKs. We have not only provided complete source code of SDKs and examples at GitHub repository, but also published SDKs on the respective package manager website.
Now, I will show you the
sample C# code to convert a Presentation to PDF. We will create a new project
and follow these steps:
Feel free to drop us a comment sharing your thoughts about Aspose.Slides Cloud REST API. Or let us know if you have any suggestions or if you need any particular features which you expect our REST API to have.
And if you’ve not already had a chance to try our REST API, simply start a free trial today. All you need is to sign up with the aspose.cloud. Once you’ve signed up, you’re ready to try the powerful file processing features offered by aspose.cloud.
Do you need to convert Microsoft Word document to EPUB, the eBook format? The EPUB file format looks good and provides pleasant reading experience on eReader devices such as the Kindle, Nook, Sony Reader and tablets. The Microsoft Word and PDF documents are also good for sharing and distributing online, but these file formats are not eReader friendly. You can use Aspose.Words Cloud to convert Microsoft Word document to EPUB with high fidelity.
Aspose.Words Cloud is
an easy to use and powerful REST API solution that works on any platform. It can
convert the industry
standard file formats to the EPUB format. The content, formatting, images,
hyperlinks, metadata and navigation of resultant EPUB functions in any EPUB
compliant eReader.
Now, I will show you
how easily you can convert a Microsoft Word document to EPUB using the Python
SDK. If you are using some other programming language, then you can check
SDK of your choice from our GitHub
repository. It contains the complete source code of the SDK along with the working
examples.
While converting a
document to EPUB, you can control the output by related save options. Please
check the EpubSaveOptions
request parameter for more details. We will follow these steps to convert
Microsoft Word document to EPUB:
Install Python package
Upload source document
to Storage
Convert document to
EPUB
Install Python package
Install
aspose-words-cloud with PIP from PyPI by:
pip install aspose-words-cloud
Code
Got a question or a Bug? Please feel free to drop us a comment below or post a question in the support forum. It helps us to continually improve and refine our API.
Reverse Image Search
is a technique that helps you search visually similar images based upon your
sample image. There may be a lot of use cases to apply the reverse image search
engine. The most common use cases are the following:
Search for duplicate image
and remove the duplicates
Search for content similar
images
Search for
inappropriate content
Search for digitally
signed images
There are many applications available for image searching based on reverse image search technique. However, if yo’re looking for a REST API solution for reverse image search, then you’ve landed at the right place. Aspose.Imaging Cloud provides a powerful search engine that helps developers to add reverse image search feature in their application on any platform seamlessly. It compares the source image set, containing at least one image, with several other images. As a result of this comparison you get a list of most similar images according to the following conditions:
Degree of similarity
The minimal threshold
of similarity
Algorithm of
comparison
Currently
Aspose.Imaging Cloud search engine supports content-based image search, duplicate
image search, image search by custom registered tags, image comparison and
similarity detection and Image features extraction operations.
Here, we’ll give you a quick walk through the feature to find duplicate images using Aspose.Imaging Cloud REST API. However, you can check Aspose.Imaging Cloud documentation for a complete list of features and their details.
How to Find Duplicate
Images?
Duplicate image
detection, this is the most common use of the reverse image search engine. Many
customers need to sort out their photo libraries by finding similar photo
images and leaving one or several shots while deleting the rest ones.
We’ll show you, how easily you can find duplicate images using Aspose.Imaging Cloud API. We’re using AKAZE algorithm for features detection and RandomBinaryTree algorithm for feature matching in the example. We’ll follow these steps to find the duplicate images:
To learn more about
Aspose.Imaging Cloud using a free trial, all you need is to sign up with the aspose.cloud. Once you’ve signed up, you may go through the
following useful resources of Aspose.Imaging Cloud.
Got a question or a Bug? Please feel free to drop us a comment below or post a question in the support forum. It helps us to continually improve and refine our API.
Hello Guys! We’re back with another important release of Aspose.PDF Cloud REST API release, 19.8. In this blog post, I’ll get you familiar with the brand new features introduced in the new release.
This release includes a number of useful features to expand the API usage. Some of the important features, from the list, are support to certify a PDF Document and conversion of Markdown file format to PDF document. In subsequent sections, I will give you and overview of these exciting features. You can check the release notes for the new version to get a complete list of new features and fixes.
How to Certify PDF
Document?
You would be wondering
what is the difference between signing and certifying PDF document? And why
should you certify a document?
Signing a PDF document
or form means that you approved the document contents and requested changes.
However, when you certify a PDF document or form it ensures its integrity and
authenticity. You allow recipients to make only specific changes in published
PDF document or form. For example, in the case of PDF forms, you can specify
that the recipient can fill in the form fields without invalidating the
document. However, if a user tries to add or remove a form field or a page, the
certification will be invalidated.
With this release, we
took working with PDF Documents and Forms to the next level, by introducing the
Certify API. A new parameter docMdpAccessPermissionType will be used
to grant access permissions for the PDF. Currently, following access types can
be granted:
NoChanges
FillingInForms
AnnotationModification
Let
me show how it works. For example, there is a scenario when you want to share
some company policy document and do not allow recipients to modify it. You can certify
the document and set docMdpAccessPermissionType parameter to NoChanges, so user
cannot modify it otherwise certification will be invalided.
Here
we, go, check the sample code:
Have
you noticed? I have shared C# code snippet example. However, if you are working
in some other programming language, no need to worry. We have SDKs for all popular programming
languages and you can pick SDK of your choice.
Convert Markdown to
PDF with Python
You
came across Markdown files in your daily working and its usage is increasing
day by day, because it is a lightweight markup language with plain text
formatting syntax and easy to maintain. However, there are scenarios when you
need to convert it to some fix file format. We have provided Markdown to PDF
Conversion feature in Aspose.PDF Cloud REST API to cope with the requirements.
We
have introduced following two APIs for the conversion:
Convert
Markdown file to PDF document from storage and save resulting file to storage
Let
me give you a quick demonstration of Markdown to PDF conversion using
Aspose.PDF Cloud SDK for Python. You may check available SDKs and use the SDK of your choice
to include the PDF document processing feature in
your application without worrying about underlying API calls.
Tell Us What You Think
We
would love you to hear from you, what you think about Aspose.PDF Cloud REST API?
If you’ve any suggestions or if you need any particular features which you
expect our REST API to have, please feel free to drop us a comment below or at the support forum.
If you’ve not already tried
our REST API, we encourage you to head over to Aspose.PDF Cloud with a free
trial today. All you need is to sign up with the aspose.cloud Once
you’ve signed up, you may go through the following useful resources of
Aspose.PDF Cloud.
Looking for an update
on the latest improvement and enhancements to Aspose.Imaging Cloud 19.7? This
post will get you familiar with what has been added to the new release of
Aspose.Imaging Cloud.
We continue to improve
our API; in this release, we have added some new features along with the fixes
of the issues reported in previous versions of the API, which make it the first
choice of developers to meet all of the modern image processing requirements. We
have introduced OTG (OpenDocument graphics template) file format support, a new
SDK for Python and many fixes those improved PSD to PDF conversion, EMF to PNG
and many other notable improvements. Please check the release notes of this version for a complete list of improvements and fixes.
Let’s give you a
preview of new features along with sample code.
How to Manipulate OTG
(OpenOffice Graphic Template)
Aspose.Imaging Cloud
supports almost all industry standard image formats. With this release, we extend
the list to OTG file format, OpenOffice Graphic Template created using the
OASIS OpenDocument standard. That contains the default layout and drawing
information for a vector graphic; stored in a file package using XML
formatting. OTG files can be used as a starting point for creating multiple ODG
drawings in OpenDocument-compatible programs, such as Apache OpenOffice
(formerly OpenOffice.org).
Now, OTG image cropping,
resizing, rotation, flipping and updating tasks can be accomplished with a simple
set of HTTP requests in your application. Currently it supports to convert OTG
file format to BMP, GIF, JPEG, JPEG2000, PSD, TIFF, WEBP, PNG and PDF.
Let’s demonstrate you how
easily you can convert OTG to BMP using Aspose.Imaging Cloud API. We are using
cURL command for the purpose, however, you can also use Aspose.Imaging Cloud
SDK of your choice. Please refer to the complete list of available
SDKs to use Aspose.Imaging
Cloud API directly in your favorite platform.
Get JWT Authentication
Token
Convert OTG Image to
BMP
Image Manipulation
in Python
While working with Python,
you would be looking for a reliable API for image manipulation in your application.
Aspose has solved this problem. We have introduced Aspose.Imaging
Cloud SDK for Python for its Python developers, that allows them to work
with Aspose.Imaging Cloud REST APIs in Python based platform quickly and
easily, gaining all benefits of strong types and IDE highlights. It is a
wrapper around REST APIs and supports all the features introduced in Aspose.Imaging
Cloud API without worrying about the underlying REST API calls. The
distribution is available at GitHub with numerous API test cases provided in
this SDK to understand the Cloud API working and implementation of its
features. It supports Python 2.7 and later versions.
Installation
You can get complete
source code of the SDK from GitHub repository. Moreover, Aspose.Imaging Cloud
SDK for Python is also available as released package in the PyPI (Python Package Index). You can bypass the source code repository
and depend directly on the released package by installing from PyPI:
pip install
aspose-imaging-cloud
Getting Started
Once
you are done with installation of packages and dependencies in your project, you
can easily call the API in your Python based code to consume the API features.
Here is the sample code to demonstrate the working of Aspose.Imaging Cloud API
using Python SDK. Please follow the installation procedure and then run the
following Python code:
Tell Us What You
Think
Got a question or a Bug? Please feel free to drop us a comment below or post a question in the support forum. It helps us to continually improve and refine our API.
Still haven’t tried Aspose.Imaging Cloud? The free trial is right here waiting for you to give it a try and explore the power of the Comparison REST API. All you need is to sign up with the aspose.cloud.
Hello guys! We are excited to release Aspose.PDF Cloud 19.7. With the latest release of Aspose.PDF Cloud, our feature list expands with support of data import and export in PDF Forms. Another important enhancement is the batch processing of pages in PDF to HTML conversion. We have also refactored Aspose.PDF Cloud code in this release, which make it more stable and reliable PDF manipulation API.
I will give you an
overview of some of the new features in the following sections. For complete
details of new features and enhancement, please check the release
notes of this version.
Working with PDF
Form Data
There are business scenarios where you need to collect data using interactive forms, from users. The PDF Form is one good reliable option for the purpose. You gather the data in that form and put it into your database so you can use it later. But you do not need the entire form submitted back, only the data that users input. Or maybe you need to do the other way around, populate a PDF Form with data from your database.
In both these cases, data files; XML, FDF and XFDF are used for importing and exporting data in PDF Forms. This technique is an efficient way to transmit and archive data because the data files are smaller than PDF files. You can either send data files as response to some URL or email address using submit button on the form.
Aspose.PDF Cloud already supports to create a PDF Form. However, from this release you can import and export data files in PDF Forms. So, now Aspose.PDF Cloud is a complete solution to work with the PDF Forms.
Aspose.PDF Cloud supports three different file types to store the values of form fields. The FDF (Forms Data Format) file, it contains the values of the form fields in key/pair fashion. The XFDF file, that provides an XML encoded type of FDF called XFDF. An XFDF file stores the values of the form fields in a hierarchical manner using XML. And the XML file usually used by PDF Forms created with Adobe LiveCycle.
Let’s give you a quick overview of importing and exporting data in PDF forms using Aspose.PDF Cloud cURL commands. However, you can use the SDK of your favorite language in your application without worrying about underlying REST API Calls.
Export Data from
PDF Form
You can export filled-in PDF form data as data-only files using Aspose.PDF Cloud and use these data files in your workflow.
Here’re the sample
cURL commands to export different types of data files:
If you’re new to
Aspose.PDF Cloud and haven’t tried yet? The free trial is right here waiting
for you. Just sign up with the aspose.cloud and visit our developer resources for a quick
start.
Don’t forget to share your feedback, your feedback helps to shape our roadmap because it is important to us to always deliver a product that satisfies your needs., please feel free to drop us a comment below or in the support forum.
PDF is the defacto file type to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. Aspose.PDF Cloud provides a number of operations that work seamlessly with your existing PDF documents, allowing you to convert to and from PDF formats, extract document information and manipulate your PDF documents on cloud storage of your choice.
Aspose.PDF Cloud allows users to sign and/or certify their PDF documents before distributing downstream. This would give your customers an added sense of security, that their PDF files have not been intentionally or unintentionally modified since they were authored.
How is signing different from certifying?
When signing a PDF document using a signature, you basically confirm its contents “as is”. Consequently, any other changes made afterward invalidate the signature and thus, you would know if the document was altered.
Whereas, certifying a document first allows you to specify the changes that a user can make to the document without invalidating the certification.
How do you know your document is signed?
When a document has a valid certification, a blue ribbon in a blue bar will show above the document in the viewer, like this:
In this case, the document originated from the United States Government Printing Office.
What signing algorithms does Aspose.PDF Cloud support?
As of now, we support the following standards
Name
Description
PKCS1
Represents signature object regarding PKCS#1 standard. RSA encryption algorithm and SHA-1 digest method are used for signing.
PKCS7
Represents the PKCS#7 object that conforms to the PKCS#7 specification in Internet RFC 2315, PKCS #7: Cryptographic Message Syntax, Version 1.5. The SHA1 digest of the document’s byte range is encapsulated in the PKCS#7 SignedData field.
PKCS7Detached
Represents the PKCS#7 object that conform to the PKCS#7 specification in Internet RFC 2315, PKCS #7: Cryptographic Message Syntax, Version 1.5. The original signed message digest over the document’s byte range is incorporated as the normal PKCS#7 SignedData field. No data shall is encapsulated in the PKCS#7 SignedData field.
How to add a signature with Adobe Acrobat?
In Adobe Reader click on Get Documents SignedOn the left hand, a poup will appear. Click on Place Signature under the Fill and Sign Tools Section.
Drag a Rectangular portion over the document where you want to add your signature stamp.
Enter the password to your signing authority and the PDF will be saved with the stamp.
How to add a signature with Aspose.PDF Cloud?
Here we are going to sign a PDF page using Aspose.PDF Cloud.
Want to know if the document has been signed? Lets try the same operation again. Rather then the 200 response we get the following result
Have any Question
Feel free to drop us a comment below sharing your thoughts about Aspose.PDF Cloud REST API. Or let’s know if you have any suggestions or if you need any particular features which you expect our REST API to have.
Try It Out
And if you’ve not already
had a chance to try our REST API, simply start a free trial today. All you need
is to sign up with the aspose.cloud. Once you’ve signed up,
you’re ready to try the powerful file processing features offered by aspose.cloud.
Tagged Image File Format, abbreviated TIFF or TIF, is a computer file format for storing raster graphics images, popular among graphic artists, the publishing industry, and photographers.
Sometimes, there is a need to update parameters of existing TIFF image. For instance, you may want to update bit depth of an image, change the compression of an image or set horizontal/vertical resolution of a TIFF image. Aspose.Imaging Cloud provides an API to perform these operations. A cURL Example would help you better to understand the API parameters:
// First get JSON Web Token
// Please get your App Key and App SID from https://dashboard.aspose.cloud/#/apps. Kindly place App Key in "client_secret" and App SID in "client_id" argument.
curl -v "https://api.aspose.cloud/connect/token" \
-X POST \
-d "grant_type=client_credentials&client_id=xxxx&client_secret=xxxx" \
-H "Content-Type: application/x-www-form-urlencoded" \
-H "Accept: application/json"
// cURL example to update parameters of existing TIFF image
curl -v "https://api.aspose.cloud/v3/imaging/tiff?compression=adobedeflate&resolutionUnit=inch&bitDepth=1&horizontalResolution=150&verticalResolution=150" \
-X POST \
-T SampleTiff.tiff \
-H "Content-Type: application/json" \
-H "Accept: multipart/form-data" \
-H "Authorization: Bearer <jwt token>" \
-o sample_out.tiff
Since it is a REST API, you can call it with any programming language.
Other possible manipulations of TIFF image could be following:
We’re happy to release
19.7 version of Aspose.Words Cloud. In this release, we’ve introduced working
with Range feature, PDF to Word conversion enhancement, all new Aspose.Words
Cloud SDK for .NET, along with many other fixes. Read on to see what’s new.
Range API
If you’re familiar with the Microsoft Word Automation, you would know that the most commonly used object in it is Range object. The Range Object enables a user to specify a contiguous area in a document and then allow to modify it, such as insert text or apply formatting.
With this release, we’ve
introduced the Range API in Aspose.Words Cloud. The concept of the Range is
similar to Range Object in MS Word API. It is signified as a pair of positions
(START, END), where a coordinate of START always less than a coordinate of END.
It may span across multiple sections, paragraphs, etc., in other words, across
different nodes of the DOM tree. Thus, a user can ignore the underlying model
of the document. Such approach is going to make the usage of API much more
friendly.
Currently, our Range feature has just very basic functionality, but we have a future plan to make it as convenient as the Range object of Microsoft Word Automation.
Let’s give you some
overview of Range API, for details please visit documentation.
How to specify a Range?
Aspose.Words Cloud
provides three options to specify a range in a document:
Based on nodes IDs
/range/{startId}/{endId}
{startId} – id of the node from which the range starts
(included). Required.
{endId} – id of the node at which the range ends
(excluded). Optional. If missed, the end of the range corresponds to the end of
the node with id = startId, i.e. the range is limited by the bounds of
“startId node”.
Based on pseudo names of nodes
/range/{startPseudoName}/{endPseudoName}
{startPseudoName} – a pseudo name of the node from which the
range starts (included). Required.
{endPseudoName} – a pseudo name of the node at which the
range ends (excluded). Optional. If missed, the end of the range corresponds to
the end of the node with pseudoname = startPseudoName, i.e. the range is
limited by the bounds of “startPseudoName node”.
Current available pseudonames are TableN for
tables and ImageN for images.
{startIdentifier} – an identifier (id or a pseudo name) of the
node from which the range starts (included). Required.
{endIdentifier} – an identifier (id or a pseudo name) of the
node at which the range ends (excluded). Optional. If missed, the end of the
range corresponds to the end of the node with identifier = startIdentifier,
i.e. the range is limited by the bounds of “startIdentifier node”.
{startSelector} – a selector which specifies the certain
position inside the start node (included). Optional. If missed, the start of
the range corresponds to the beginning of the start node.
{endSelector} – a selector which specifies the certain
position inside the end node (excluded). Optional. If missed, the end of the
range corresponds to the element before the beginning of the end node.
A certain position inside a node can be specified with a selector which is separated from a node identifier with a colon. Selectors cannot be used without node identifier. Currently, Range API supports the end selector.
The end selector specifies the end of the node (“end” here is supposed to be a virtual node after the last child node, i.e. it means that the whole content of the node should be included).
Operations Supported
with a Range
Currently we’re
supporting following operations with a Range:
For
a quick demonstration, here we show you how easily you can replace the content
in the range with simple HTTP request using cURL command. However, you can use Aspose.Words Cloud SDK of your
favorite language in your application without worrying about underlying API
calls.
First,
call the Paragraph API to get a list of paragraphs that are contained in the
document.
We
need to replace content of first paragraph of the document. You see that second
paragraph correspond to NodeId id0.0 in the response, so we’ll call Range API
to replace the content like:
You can visit the release notes for a complete list
of improvement and fixes.
Experience Aspose.Words Cloud
If you’ve not already tried
our REST API, we encourage you to head over to Aspose.Words Cloud with a free
trial today. All you need is to sign up with the aspose.cloud. Once you’ve signed up, you may go through the
following useful resources of Aspose.Words Cloud.
Your feedback is very important
for us. If you’ve any suggestions or if you need any particular features which you
expect our REST API to have, please feel free to drop us a comment below or at support forum.
PDF Document is the defacto file type to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. Aspose.PDF Cloud provides a number of operations that work seamlessly with your existing PDF Documents, allowing you to convert to and from PDF Format, extract document information, and perform operation like Encrypting and Decrypting PDF Documents.
Encrypting a PDF Document
Aspose.PDF Cloud allows you to easily encrypt a PDF document. Encrypting a PDF makes it unreadable to anyone without the password. This helps you protect sensitive information in a PDF file. You can similarly encrypt a file using the ubiquitous Adobe PPF Reader
The below example demonstrates applying the AESx256 encryption algorithm to a PDF document hosted on Aspose Cloud Storage. The output is then stored back onto the Cloud
Valid API Parameters
Parameter
Values
userPassword
Base 64 Encoded String Value
ownerPassword
Base 64 Encoded String Value
cryptoAlgorithm
Please see below
The cryptoAlgorithm takes the following possible values. This represents the type of cryptographic algorithm used in Encryption / Decryption routines.
RC4x40
RC4 with key length 40.
RC4x128
RC4 with key length 128.
AESx128
AES with key length 128.
AESx256
AES with key length 256.
When you try to open an encrypted PDF file, you get asked for a password
Decrypting a PDF Document
Aspose.PDF Cloud allows you to easily decrypt a PDF document. Any PDF decrypted by the above encryption process needs to be decrypted before it can be used. Please remember the password has to be a Base 64 Encoded string value.
Have any Question
Feel free to drop us a comment below sharing your thoughts about Aspose.PDF Cloud REST API. Or let’s know if you have any suggestions or if you need any particular features which you expect our REST API to have.
Try It Out
And if you’ve not already
had a chance to try our REST API, simply start a free trial today. All you need
is to sign up with the aspose.cloud. Once you’ve signed up,
you’re ready to try the powerful file processing features offered by aspose.cloud.
