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matomo / app / vendor / tecnickcom / tcpdf / README.md
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config 2 months ago fonts 2 years ago include 2 months ago LICENSE.TXT 2 months ago Makefile 2 months ago README.md 2 months ago VERSION 2 months ago tcpdf.php 2 months ago tcpdf_autoconfig.php 2 months ago tcpdf_barcodes_1d.php 2 months ago tcpdf_barcodes_2d.php 2 months ago
README.md
132 lines
1 # TCPDF
2
3 > Legacy PDF engine for PHP. **Deprecated** and maintained for existing integrations.
4
5 [![Latest Stable Version](https://poser.pugx.org/tecnickcom/tcpdf/version)](https://packagist.org/packages/tecnickcom/tcpdf)
6 [![License](https://poser.pugx.org/tecnickcom/tcpdf/license)](https://packagist.org/packages/tecnickcom/tcpdf)
7 [![Downloads](https://poser.pugx.org/tecnickcom/tcpdf/downloads)](https://packagist.org/packages/tecnickcom/tcpdf)
8 [![Donate via PayPal](https://img.shields.io/badge/donate-paypal-87ceeb.svg)](https://www.paypal.com/donate/?hosted_button_id=NZUEC5XS8MFBJ)
9
10 If TCPDF helps your business, please consider supporting development via [PayPal](https://www.paypal.com/donate/?hosted_button_id=NZUEC5XS8MFBJ).
11
12 ---
13
14 ## Deprecation Notice
15
16 TCPDF is **deprecated** and in **maintenance-only mode**.
17
18 Active feature development has moved to [tc-lib-pdf](https://github.com/tecnickcom/tc-lib-pdf), the modern and modular successor.
19
20 For new projects, use `tecnickcom/tc-lib-pdf`. This repository remains available for legacy systems and critical compatibility fixes.
21
22 ### Migration Path
23
24 - New projects: install `tecnickcom/tc-lib-pdf`.
25 - Existing TCPDF users: keep TCPDF for current production workloads and migrate in phases.
26 - Teams seeking modern architecture, Composer-first design, and stronger type-safety should prioritize `tc-lib-pdf`.
27
28 ### Why Migrate to tc-lib-pdf
29
30 - Modern architecture: modular libraries and cleaner component boundaries improve maintainability.
31 - Better extensibility: new features are easier to add without patching a monolithic legacy core.
32 - Stronger tooling fit: modern package structure works better with static analysis, CI, and automated tests.
33 - Lower long-term risk: reduces technical debt tied to legacy APIs and supports ongoing PHP ecosystem evolution.
34 - Improved delivery speed: teams can implement and ship new PDF capabilities with less friction.
35
36 Migration still requires planning and regression checks to preserve rendering parity for existing documents.
37
38 ### Future Compatibility Possibility
39
40 As a long-term possibility, TCPDF could be refactored to use `tc-lib-pdf` internally as a backend while preserving a practical level of backward compatibility for existing TCPDF integrations.
41
42 This is not part of a committed roadmap and there is no guarantee it will happen. It is documented here only as a potential direction that may be evaluated in the future.
43
44 ---
45
46 ## Overview
47
48 TCPDF is a pure-PHP library for generating PDF documents and barcodes directly in application code.
49
50 It has been widely used across many PHP stacks and still provides a complete feature set for text rendering, page composition, graphics, signatures, forms, and standards-oriented output.
51
52 | | |
53 |---|---|
54 | **Package** | `tecnickcom/tcpdf` |
55 | **Author** | Nicola Asuni <info@tecnick.com> |
56 | **License** | [GNU LGPL v3](https://www.gnu.org/copyleft/lesser.html) (see [LICENSE.TXT](LICENSE.TXT)) |
57 | **Website** | <http://www.tcpdf.org> |
58 | **Source** | <https://github.com/tecnickcom/TCPDF> |
59
60 ---
61
62 ## Features
63
64 ### Text & Fonts
65 - UTF-8 Unicode and right-to-left (RTL) language support
66 - TrueTypeUnicode, OpenTypeUnicode v1, TrueType, OpenType v1, Type1, and CID-0 fonts
67 - Font subsetting
68 - Text hyphenation, stretching, spacing, and rendering modes (fill/stroke/clipping)
69 - Automatic line breaks, page breaks, and justification
70
71 ### Layout & Content
72 - Standard and custom page formats, margins, and measurement units
73 - XHTML + CSS rendering, JavaScript, and forms
74 - Automatic headers and footers
75 - Multi-column mode and no-write page regions
76 - Bookmarks, named destinations, and table of contents
77 - Automatic page numbering, page groups, move/delete pages, and undo transactions
78
79 ### Images, Graphics & Color
80 - Native JPEG, PNG, and SVG support
81 - Geometric drawing primitives and transformations
82 - Support for GD image formats (`GD`, `GD2`, `GD2PART`, `GIF`, `JPEG`, `PNG`, `BMP`, `XBM`, `XPM`)
83 - Additional formats via ImageMagick (when available)
84 - JPEG/PNG ICC profiles, grayscale/RGB/CMYK/spot colors, and transparencies
85
86 ### Security, Standards & Advanced Output
87 - Encryption up to 256-bit and digital signature certifications
88 - PDF annotations (links, text, and file attachments)
89 - 1D and 2D barcode support (including CODE 128, EAN/UPC, Datamatrix, QR Code, PDF417)
90 - XObject templates and layers with object visibility controls
91 - PDF/A-1b support
92
93 ---
94
95 ## Requirements
96
97 - PHP 7.1 or later
98 - `ext-curl`
99
100 Optional extensions for richer output in some workflows: `gd`, `zlib`, `imagick`.
101
102 ---
103
104 ## Third-Party Fonts
105
106 This library may include third-party font files released under different licenses.
107
108 PHP metadata files under [fonts](fonts) are covered by the TCPDF license (GNU LGPL v3). They contain font metadata and can also be generated using TCPDF font utilities.
109
110 Original binary TTF files are renamed for compatibility and compressed with PHP `gzcompress` (the `.z` format).
111
112 | Prefix | Source | License |
113 |---|---|---|
114 | `free*` | [GNU FreeFont](https://www.gnu.org/software/freefont/) | GNU GPL v3 |
115 | `pdfa*` | Derived from GNU FreeFont | GNU GPL v3 |
116 | `dejavu*` | [DejaVu Fonts](http://dejavu-fonts.org) | Bitstream/DejaVu terms |
117 | `ae*` | [Arabeyes.org](http://projects.arabeyes.org/) | GNU GPL v2 |
118
119 For full details, see the bundled notices in the corresponding subdirectories under [fonts](fonts).
120
121 ---
122
123 ## ICC Profile
124
125 TCPDF includes `sRGB.icc` from the Debian [`icc-profiles-free`](https://packages.debian.org/source/stable/icc-profiles-free) package.
126
127 ---
128
129 ## Contact
130
131 Nicola Asuni <info@tecnick.com>
132