Extract text in Accurate Mode Leave feedback
On this page
GroupDocs.Parser provides the functionality to extract text from documents.
The Accurate mode is the default text extraction mode: the text quality is the best possible.
You can extract the whole document text or only the text of a document page.
To extract text in Accurate mode, the getText method of the Parser class is used:
parser.getText(); // the whole document
parser.getText(pageIndex); // a single page (zero-based index)
The methods return an instance of the TextReader class with the extracted text, or null if text extraction isn’t supported for the document. To retrieve the total number of document pages, use the getDocumentInfo method (see below).
TextReader has the following members:
| Member | Description |
|---|---|
readLine() | Reads a line of characters from the text reader and returns the data as a string. |
readToEnd() | Reads all characters from the current position to the end of the text reader and returns them as one string. |
close() | Releases the resources used by the reader. |
Here are the steps to extract text from the document:
- Instantiate the
Parserobject for the initial document; - Call the
getTextmethod and obtain theTextReaderobject; - Check if
readerisn’tnull(text extraction is supported for the document); - Read the text from
reader.
The following example shows how to extract text from a document:
const groupdocs = require('@groupdocs/groupdocs.parser');
// Create an instance of Parser class
const parser = new groupdocs.Parser('sample.pdf');
try {
// Extract a text into the reader
const reader = parser.getText();
// If text extraction isn't supported, a reader is null
if (reader == null) {
console.log("Text extraction isn't supported");
} else {
try {
// Print a text from the document
console.log(reader.readToEnd());
} finally {
reader.close();
}
}
} finally {
parser.close();
}
process.exit(0);
Here are the steps to extract text from a document page:
- Instantiate the
Parserobject for the initial document; - Call
parser.getFeatures().isText()to check if text extraction is supported for the document; - Call the
getDocumentInfomethod to get the number of pages; - Call the
getText(pageIndex)method with the page index and obtain theTextReaderobject; - Read the text from
reader.
The following example shows how to extract text from document pages:
const groupdocs = require('@groupdocs/groupdocs.parser');
function run() {
// Create an instance of Parser class
const parser = new groupdocs.Parser('sample.pdf');
try {
// Check if the document supports text extraction
if (!parser.getFeatures().isText()) {
console.log("Document doesn't support text extraction.");
return;
}
// Get the document info
const documentInfo = parser.getDocumentInfo();
// Check if the document has pages
if (documentInfo.getPageCount() === 0) {
console.log('Document has no pages.');
return;
}
// Iterate over pages
for (let p = 0; p < documentInfo.getPageCount(); p++) {
// Print a page number
console.log(`Page ${p + 1}/${documentInfo.getPageCount()}`);
// Extract a text into the reader
// We ignore null-checking as we have checked text extraction feature support earlier
const reader = parser.getText(p);
try {
// Print a text from the document page
console.log(reader.readToEnd());
} finally {
reader.close();
}
}
} finally {
parser.close();
}
}
run();
process.exit(0);
Along with the full-featured library we provide simple but powerful free apps.
You are welcome to extract data from PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more with our Free Online Document Parser App.
Was this page helpful?
Any additional feedback you'd like to share with us?
Please tell us how we can improve this page.
Thank you for your feedback!
We value your opinion. Your feedback will help us improve our documentation.
