TCPDF main features are:

• no external libraries are required for the basic functions;
• supports all ISO page formats;
• supports custom page formats, margins and units of measure;
• supports UTF-8 Unicode and Right-To-Left languages;
• supports TrueTypeUnicode, OpenTypeUnicode, TrueType, OpenType, Type1 and CID-0 fonts;
• supports document encryption;
• includes methods to publish some XHTML code;
• includes graphic (geometric) and transformation methods;
• includes Javascript and forms support;
• includes a method to print various barcode formats: CODE 39, ANSI MH10.8M-1983, USD-3, 3 of 9, CODE 93, USS-93, Standard 2 of 5, Interleaved 2 of 5, CODE 128 A/B/C, 2 and 5 Digits UPC-Based Extention, EAN 8, EAN 13, UPC-A, UPC-E, MSI, POSTNET, PLANET, RMS4CC (Royal Mail 4-state Customer Code), CBC (Customer Bar Code), KIX (Klant index - Customer index), Intelligent Mail Barcode, Onecode, USPS-B-3200, CODABAR, CODE 11, PHARMACODE, PHARMACODE TWO-TRACKS;
• includes methods to set Bookmarks and print a Table of Content;
• includes methods to move and delete pages;
• includes methods for automatic page header and footer management;
• supports automatic page break;
• supports automatic page numbering and page groups;
• supports automatic line break and text justification;
• supports JPEG and PNG images natively, all images supported by GD (GD, GD2, GD2PART, GIF, JPEG, PNG, BMP, XBM, XPM) and all images supported via ImagMagick (http://www.imagemagick.org/www/formats.html)
• supports stroke and clipping mode for text;
• supports clipping masks;
• supports Grayscale, RGB, CMYK, Spot Colors and Transparencies;
• supports several annotations, including links, text and file attachments;
• supports page compression (requires zlib extension);
• supports text hyphenation.
• supports transactions to UNDO commands.