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Last updated FAQs:

Where are your .NET examples?
How to merge PDFs and add bookmarks?
How to solve an UnsupportedCharsetException when using itext-asian.jar
How to fill XFA form using iText without breaking usage rights?
How to move the content inside a rectangle inside an existing PDF?
Where can I download the license key library?
How to change the order of Optional Content Groups?
How to change a background Image into a watermark by altering the opacity?
Why can't I extract text added using a Type3 font correctly from a PDF?
How to add an x-offset to a text pattern with every x-step?
How do I add XMP metadata to each page of an existing PDF?
How to set the OCG state of an existing PDF?
I upgraded to iText version 7 or 8, how do I use my license?
Are iText 5 and iText 7 backwards compatible?
Argument not specified in iTextSharp
Can I change the page count by changing internal metadata?
Can I create a Reader-enabled PDF using iText?
Could not find a glyph corresponding to Unicode character
Do I need a license for Windows fonts when using iText?
Do we license per functionality /feature?
Do you have authorized resellers?
Do you have customer testimonials?
Does a PDF file have styles, headers and footers?
Does anyone have any idea how TabStop works?
How can I add a new AcroForm field to a PDF?
How can I add an image to all pages of my PDF?
How can I add titles of chapters in ColumnText?
How can I convert a CSV file to a table with a repeating header row?
How can I create a Reader enabled PDF with a signature field that can be signed in Adobe Reader
How can I crop the pages of an existing PDF document?
How can I find the border color of a field?
How can I find the maximum character limit for a text field?
How can I generate a PDF/UA compatible PDF with iText?
How can I load a font from /WEB-INF/resources/fonts/foobar.ttf?
How can I log the number of documents / bytes I've processed?
How can I read Roman page numbers?
How can I serve a PDF to a browser without storing a file on the server side?
How can I set the zoom level of a PDF using iText 7?
How can I use regular and bold in a single String?
How do I change the border color of a PdfPCell?
How do I create a separate OCR layer?
How do I extend my 30-day free trial?
How do I get a free trial?
How do I get an object if I have its indirect reference?
How do I insert a hyperlink to another page in an existing PDF?
How do I install iText Core?
How do I renew my license?
How do I rotate a PDF page to an arbitrary angle?
How do I set parameters back to the default value?
How do I use pdfRender in a .NET environment?
How do setMinimumSize() and setFixedSize() interact?
How do we define an application?
How does a PdfPCell's height relate to the font size?
How does iText Group count processes/files?
How much does it cost to upgrade iText 5 to iText 7?
How should I interpret the coordinates of a rectangle in PDF?
How to adapt the position of the first line in ColumnText?
How to add "continue on next page" / "continued from next page" to a table?
How to add a background image to a cell?
How to add a border to a paragraph?
How to add a border to a PDF page?
How to add a cover page to an existing PDF document?
How to add a full line break?
How to add a hidden text field?
How to add a map with a pointer to a PDF?
How to add a new form from an existing PDF template?
How to add a page number in the header of a PDF/A Level A file?
How to add a printable or non-printable bitmap stamp to a PDF?
How to add a rectangle to every page of a document?
How to add a shading pattern to a custom shape?
How to add a table as a header?
How to add a table in the top-right corner of the page?
How to add a table on a form (and maybe insert a new page)?
How to add a table to the bottom of the last page?
How to add a text to the left and to the right in a header?
How to add a watermark to a page with an opaque image?
How to add alternative text for an image in Tagged PDF?
How to add an image and text to the same cell?
How to add an image to an AcroForm field?
How to add an image to an existing PDF using AffineTransform?
How to add an image watermark to a PDF file?
How to add an In Reply To annotation?
How to add an inner table surrounded by text?
How to add an onMouseOver javaScript action to a TextField?
How to add blank pages to an existing PDF in java?
How to add blank pages while concatenating several PDFs using PdfSmartCopy
How to add inline spacing in a PdfPCell?
How to add JPEG images that are multi-stage filtered (DCTDecode and FlateDecode)?
How to add multiple images into a single PDF?
How to add text as a header or footer?
How to add text at an absolute position on the top of the first page?
How to add text inside a rectangle?
How to add text to an image?
How to add two images in one cell?
How to align a label versus its content?
How to align AcroFields?
How to align two paragraphs to the left and right on the same line?
How to allow a Unicode subscript symbol in a PDF without using setTextRise()?
How to allow page extraction when setting password security?
How to apply color to Strings in a Paragraph?
How to attach files to a PDF?
How to avoid an exception when importing a TIFF file?
How to calculate the height of an element?
How to calculate/set font line distance?
How to change the author name for comments?
How to change the color of a circle annotation?
How to change the color of pages?
How to change the icon of a push button field?
How to change the line spacing of text?
How to change the properties of an annotation?
How to change the spacing between words and characters?
How to change the text color of an AcroForm field?
How to change the zoom factor in link annotations?
How to change width of single column of table?
How to check a check box?
How to check for an event and remove it?
How to check if a font is bold?
How to choose the optimal size for a font?
How to close a PDF file to recreate it? (File in use problem)
How to continue an ordered list on a second page?
How to continue field output on a second page?
How to convert an A4 size PDF to a PDF booklet?
How to convert an existing A4 PDF document to an A3 booklet?
How to convert colored images to black and white?
How to convert PdfStamper to a byte array?
How to create a clickable polygon or path?
How to create a complex PDF document?
How to create a custom dashed line separator?
How to create a document with unequal page sizes?
How to create a JavaScript action to open the attachments panel?
How to create a link to a specific page number?
How to create a link to launch an external program?
How to create a list without indentation?
How to create a nested column?
How to create a new PDF file if a file name already exists?
How to create a PDF with a Cartesian grid?
How to create a PDF with font information and embed the actual font while merging the files into a single PDF?
How to create a pop-up window to display images and text?
How to create a pushbuttonfield with double byte character text?
How to create a table based on a two-dimensional array?
How to create a table in which the cells have different widths?
How to create a table with 2 rows that can be used as a footer?
How to create a table with complex borders?
How to create a table with only vertical borders?
How to create a table with rounded corners?
How to create a TOC when merging documents?
How to create an uncompressed PDF file?
How to create and apply redactions?
How to create hierarchical bookmarks?
How to create Persian content in PDF?
How to create radio buttons inside a table?
How to create unique images with Image.getInstance()?
How to crop out a part of PDF file?
How to decrypt a PDF document with the owner password?
How to define different border types for a single cell?
How to define multiple actions for a PushbuttonField?
How to define spacing and leading in PdfPCell objects?
How to define the data encoding when submitting a PDF form using AcroForm technology?
How to define the page size based on the content?
How to define the width of a cell?
How to delete attachments in PDF using iText?
How to disable the save button and hide the menu bar in Adobe Reader?
How to display barcodes in a matrix-like structure?
How to display indian rupee symbol?
How to distribute the radio buttons of a radio field across multiple PdfPCells?
How to divide a page in N parts so we can fill each with a different source?
How to draw a borderless rounded rectangle?
How to draw a borderless table in iTextSharp?
How to draw a line every 25 words?
How to draw a rectangle around multiline text?
How to draw lines on an image?
How to draw vertical gradient in iTextSharp?
How to embed a font only partially?
How to enable LTV for a timestamp signature?
How to encrypt PDF using a certificate?
How to extend the page size of a PDF to add a watermark?
How to extract a page number from a PDF file?
How to extract embedded streams?
How to extract text and anchor information from a PDF?
How to fill a rectangle with color?
How to fill out a PDF file programmatically? (Dynamic XFA)
How To find internal links in a PDF file?
How to find out the current cursor position on a page?
How to find out which fields are required?
How to find the absolute position and dimension of a field?
How to fit a String inside a rectangle?
How to fix the orientation of a PDF page in order to scale it?
How to flatten a XFA PDF Form using iTextSharp?
How to flatten a XFA PDF Form using pdfXFA
How to format a field as a currency?
How to format a field as a percentage?
How to format a String resulting in a two-column display?
How to generate 2D barcode as vector image?
How to generate a report with dynamic header in PDF using iText 7?
How to generate and design PDFs with iText or iTextSharp?
How to get a font from an array?
How to get rid of the top padding in a PdfPCell?
How to get specific types from AcroFields? Like PushButtonField, RadioCheckField, etc
How to get text and image in the same cell?
How to get the author of a "free text" annotation?
How to get the co-ordinates of an image?
How to get the color properties of an AcroForm field?
How to get the current page count?
How to get the image DPI in PDF?
How to get the number of characters in a field?
How to get the page number of an arbitrary PDF object?
How to get the page width and height of a PDF document?
How to get the rendered dimensions of text?
How to get the UserUnit from a PDF file?
How to give an image rounded corners?
How to hide the Adobe floating toolbar when showing a PDF in browser?
How to hyphenate text?
How to increase the accuracy of measurements in iTextSharp?
How to insert a "linked rectangle" with iText?
How to introduce a custom font weight in iText 7?
How to introduce a rowspan?
How to introduce multiple PdfPageEventHelper instances?
How to introduce rounded cells with a background color?
How to introduce superscript?
How to invoke a page break for nested tables?
How to keep specific words together on one line?
How to load a PDF from a stream and add a file attachment?
How to maintain a paragraph's indentation inside a table cell?
How to make a field not required?
How to make a single letter bold within a word?
How to make an image a qualified mask candidate in itext?
How to make sure a check box is printed?
How to merge documents correctly?
How to merge forms from different files into one PDF?
How to merge PDFs from ByteArayOutputStreams?
How to merge PDFs from ByteArrayOutputStreams?
How to modify the size of annotations and make them read-only?
How to move an AcroForm field?
How to nest tables without extending the inner table?
How to only read text from a constant location on PDF pages?
How to open an MS Word attachment by clicking an image?
How to position text relative to page?
How to precisely position an image on top of a Table?
How to preserve high resolution images in PDF?
How to prevent images from resizing in a table cell?
How to prevent splitting a table?
How to prevent the resizing of pages in PDF?
How to print mathematical characters like ∈, ∩, ∑, ∫, ? √, ∠?
How to protect a PDF with a username and password?
How to protect an already existing PDF with a password?
How to put text above a barcode instead of under the bars?
How to read bookmark titles?
How to read PDFs created with an unknown random owner password?
How to read text from a specific position?
How to reduce redundant code when adding content at absolute positions?
How to remove text from a PDF?
How to rename named destinations in existing PDF files?
How to reorder pages in an existing PDF file?
How to reorder the pages of a PDF file?
How to resize a PdfPTable to fit the page?
How to resize an Image to fit it into a PdfPCell?
How to restrict the number of characters on a single line?
How to reuse a page from one PDF document into another PDF document?
How to right-align text in a PdfPCell?
How to rotate a page 90 degrees?
How to rotate a page while creating a PDF document?
How to rotate a paragraph?
How to rotate a single line of text?
How to rotate and scale pages in an existing PDF?
How to send a 'success' response back to Acrobat Reader from a java servlet?
How to send a file to the server through a PDF?
How to set a fixed background image for all my pages?
How to set background image in PdfPCell in iText?
How to set initial view properties?
How to set the export value of a check box?
How to set the line width of a clipping path?
How to set the page size to Envelope size with Landscape orientation?
How to set the zoom level of a PDF using iTextSharp?
How to set up a table display?
How to show an image at a text field position?
How to show an image with large dimensions across multiple pages?
How to shrink pages in an existing PDF?
How to solve an UnsupportedCharsetException when using itext-asian.jar?
How to split a row over multiple pages?
How to stamp image on existing PDF and create an anchor?
How to strike through text using iText?
How to superimpose pages from existing documents into another document?
How to tell iText how to clip text to fit in a cell?
How to tell iText which fields to flatten first?
How to tile a document and add margins to the tiles?
How to truncate text within a bounding box?
How to underline a portion of text in a text field?
How to underline text with a dotted line?
How to update a PDF without creating a new PDF?
How to use a dotted line as a cell border?
How to use a text extraction strategy after applying a location extraction strategy?
How to use an image as list symbol?
How to use Cyrillic characters in a PDF?
How to use multiple fonts in a single cell?
How to use System Font in iTextSharp with VB.net?
How to use the font Verdana in PdfStamper?
How to use the full size of a page?
How to use two different colors in a single String?
How to watermark PDFs using text or images?
How to write a table header if part of a table is forwarded to the next page?
How to write a Zapfdingbats character at a specific location on a page?
I have been using iText 5 or 7 without a commercial license but never open sourced my application. What should I do?
If iText is free why do I have to pay for it?
Is it possible to attach multiple layout events to a PdfPCell?
Is it possible to set a different alignment for text on the same line in the same cell?
Is it safe to remove XFA?
Is iText free? 
Is iText PDF a PDF viewer?
License file was corrupted
pdfOCR: If your scanned document has a mixture of sections with paragraphs and tables, what is a recommended strategy here?
pdfOCR: Is handwriting recognition supported
pdfOCR: Who provided TESS_DATA_DIRECTORY?
Volume Counter FAQs
What are the extra characters in the font name of my PDF?
What does "Not LTV-enabled" mean?
What does PDF 2.0 stand for?
What does TextPositioning in pdfOCR do?
What functionalities does iText 7 support?
What is causing syntax errors in a page created with iText 7?
What is the connection between LTV and document timestamps?
What is the difference between AGPL and commercial license?
What is the difference between getPageLabels and getPageLabelFormats?
What is the difference between iText, JasperReports and Adobe LC?
What is the PdfPTable.DefaultCell property used for?
What is the size limit of pdf file?
What's an easy to print "first right, then down"?
When is the content flushed to a PDF File by iTextSharp?
Where do I find demos and tutorials?
Where do I get AGPL tech support?
Where do I get pre-sales tech support?
Where do I get tech support?
Where do I get the PDF library?
Where is the origin (x,y) of a PDF page?
Which image types are supported by iText?
Which languages are supported in pdfOCR?
Which PDF filters are used to encode data?
Which version of the license key library should I use?
Why are PDF files different even if the content is the same?
Why are the AcroFields in my document empty?
Why aren't images added sequentially?
Why aren't my fonts getting registered?
Why can't I set the font of a Phrase?
Why do I get a "getOutputStream() has already been called for this response" error in JSP?
Why do I get a BouncyCastle NoClassDefFoundError?
Why do I get a font embedding error when creating PDFA/1a?
Why do I get a message saying 1.not.found.as.a.resource?
Why do I get a StackOverflowException in the OnEndPage() event handler?
Why do I get an "InvalidPdfException: PDF header signature not found"?
Why do I get an "System.IO.FileLoadException: Could not load file or assembly" error?
Why do I get an error saying that "use of extended features is no longer available"?
Why do I have to buy core to use the add-ons?
Why do I have to pay for pdfhtml during my upgrade, when I already have XML Worker in iText?
Why do PDFs change when processing them?
Why does ColumnText ignore the horizontal alignment?
Why does iText enter a cross symbol when CheckType style is check mark?
Why does my header overlap with my content?
Why does PdfStamper create a file with 0 bytes?
Why does the cell background color affect the color of other lines?
Why does the function to concatenate / merge PDFs cause issues in some cases?
Why does using ColumnText result in "The document has no pages" exception?
Why doesn't FontFactory.GetFont() work for all fonts?
Why doesn't getDefaultCell().setBorder(PdfPCell.NO_BORDER) have any effect?
Why is content missing in my table?
Why is iText embedding a font even when I specify not to embed?
Why is my cell event not triggered?
Why is my content overlapping with my footer?
Why is my font not applied when I create a PDF document?
Why is the page size of a PDF always the same, no matter if it's landscape or portrait?
Why is the text I extract from an English PDF page garbled?
Why isn't the Rupee symbol showing?
How to add / delete / retrieve information from a PDF using a custom property?

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