Read Pdf Metadata
To edit PDF metadata online with the help of PDF Candy, start with uploading of the file for posterior processing: “Add file” button will let you upload the file from your device; alternatively you may use the drag and drop mechanism for that.
Some image files contain metadata that you can read to determine features of the image. For example, a digital photograph might contain metadata that you can read to determine the make and model of the camera used to capture the image. With GDI+, you can read existing metadata, and you can also write new metadata to image files.
Itext Read Pdf Metadata
Is there a PHP library, preferably open-source, that can read PDF metadata? If so, or if there isn't, how would one use the library (or lack thereof) to extract the metadata? To be clear, I'm not interested in creating or modifying PDFs or their metadata, and I don't care about the PDF bodies. Adobe ® InDesign ® CS5 How-to guide Metadata: Where to find it, how to add it Metadata lets you add background information to your images, such as captions or copyright details. This post of the example tutorial series describes how to read Metadata from a PDF document using Java iText library. For those, who are beginners to the concept of Metadata, a small definition is provided below to get started. The metadata is stored as a file in XMP format. (To use the saved metadata in another PDF, open the document and use these instructions to replace or append metadata in the document.) To save the metadata as a template, choose Save Metadata Template from the dialog box menu in the upper right corner, and name the file.
Welcome to the free online metadata reader. With this free online tool you can extract metadata from files of arbitrary type. Metadata might contain the name and login of the author, the creation date or other interesting details. In SharePoint 2013, extracting metadata of Microsoft Office documents is fairly straightforward. But the metadata of a PDF file is not extracted automatically. In this article, we will see how, by using the iTextSharp library, we can easily extract the metadata of a PDF file.
GDI+ stores an individual piece of metadata in a PropertyItem object. You can read the PropertyItems property of an Image object to retrieve all the metadata from a file. The PropertyItems property returns an array of PropertyItem objects.
A PropertyItem object has the following four properties: Id, Value, Len, and Type.
Add Metadata To Pdf Files
Id
A tag that identifies the metadata item. Some values that can be assigned to Id are shown in the following table.
| Hexadecimal value | Description |
|---|---|
| 0x0320 0x010F 0x0110 0x9003 0x829A 0x5090 0x5091 | Image title Equipment manufacturer Equipment model ExifDTOriginal Exif exposure time Luminance table Chrominance table |
Value
An array of values. The format of the values is determined by the Type property.
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Len
The length (in bytes) of the array of values pointed to by the Value property.
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Type
The data type of the values in the array pointed to by the Value property. The formats indicated by the Type property values are shown in the following table
| Numeric value | Description |
|---|---|
| 1 | A Byte |
| 2 | An array of Byte objects encoded as ASCII |
| 3 | A 16-bit integer |
| 4 | A 32-bit integer |
| 5 | An array of two Byte objects that represent a rational number |
| 6 | Not used |
| 7 | Undefined |
| 8 | Not used |
| 9 | SLong |
| 10 | SRational |
Example
Description
The following code example reads and displays the seven pieces of metadata in the file FakePhoto.jpg. The second (index 1) property item in the list has Id 0x010F (equipment manufacturer) and Type 2 (ASCII-encoded byte array). The code example displays the value of that property item.
The code produces output similar to the following:
Code
Compiling the Code
Exiftool Read Pdf Metadata
The preceding example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. Handle the form's Paint event and paste this code into the paint event handler. You must replace FakePhoto.jpg with an image name and path valid on your system and import the System.Drawing.Imaging namespace.