4 * Export configuration options.
6 * Changes to these config files are not supported by BookStack and may break upon updates.
7 * Configuration should be altered via the `.env` file or environment variables.
8 * Do not edit this file unless you're happy to maintain any changes yourself.
11 $snappyPaperSizeMap = [
16 $dompdfPaperSizeMap = [
21 $exportPageSize = env('EXPORT_PAGE_SIZE', 'a4');
25 // Set a command which can be used to convert a HTML file into a PDF file.
26 // When false this will not be used.
27 // String values represent the command to be called for conversion.
28 // Supports '{input_html_path}' and '{output_pdf_path}' placeholder values.
29 // Example: EXPORT_PDF_COMMAND="/scripts/convert.sh {input_html_path} {output_pdf_path}"
30 'pdf_command' => env('EXPORT_PDF_COMMAND', false),
32 // The amount of time allowed for PDF generation command to run
33 // before the process times out and is stopped.
34 'pdf_command_timeout' => env('EXPORT_PDF_COMMAND_TIMEOUT', 15),
36 // 2024-04: Snappy/WKHTMLtoPDF now considered deprecated in regard to BookStack support.
38 'pdf_binary' => env('WKHTMLTOPDF', false),
40 'print-media-type' => true,
42 'page-size' => $snappyPaperSizeMap[$exportPageSize] ?? 'A4',
48 * The location of the DOMPDF font directory.
50 * The location of the directory where DOMPDF will store fonts and font metrics
51 * Note: This directory must exist and be writable by the webserver process.
52 * *Please note the trailing slash.*
54 * Notes regarding fonts:
55 * Additional .afm font metrics can be added by executing load_font.php from command line.
57 * Only the original "Base 14 fonts" are present on all pdf viewers. Additional fonts must
58 * be embedded in the pdf file or the PDF may not display correctly. This can significantly
59 * increase file size unless font subsetting is enabled. Before embedding a font please
60 * review your rights under the font license.
62 * Any font specification in the source HTML is translated to the closest font available
63 * in the font directory.
65 * The pdf standard "Base 14 fonts" are:
66 * Courier, Courier-Bold, Courier-BoldOblique, Courier-Oblique,
67 * Helvetica, Helvetica-Bold, Helvetica-BoldOblique, Helvetica-Oblique,
68 * Times-Roman, Times-Bold, Times-BoldItalic, Times-Italic,
69 * Symbol, ZapfDingbats.
71 'font_dir' => storage_path('fonts/'), // advised by dompdf (https://github.com/dompdf/dompdf/pull/782)
74 * The location of the DOMPDF font cache directory.
76 * This directory contains the cached font metrics for the fonts used by DOMPDF.
77 * This directory can be the same as DOMPDF_FONT_DIR
79 * Note: This directory must exist and be writable by the webserver process.
81 'font_cache' => storage_path('fonts/'),
84 * The location of a temporary directory.
86 * The directory specified must be writeable by the webserver process.
87 * The temporary directory is required to download remote images and when
88 * using the PFDLib back end.
90 'temp_dir' => sys_get_temp_dir(),
93 * ==== IMPORTANT ====.
95 * dompdf's "chroot": Prevents dompdf from accessing system files or other
96 * files on the webserver. All local files opened by dompdf must be in a
97 * subdirectory of this directory. DO NOT set it to '/' since this could
98 * allow an attacker to use dompdf to read any files on the server. This
99 * should be an absolute path.
100 * This is only checked on command line call by dompdf.php, but not by
101 * direct class use like:
102 * $dompdf = new DOMPDF(); $dompdf->load_html($htmldata); $dompdf->render(); $pdfdata = $dompdf->output();
104 'chroot' => realpath(public_path()),
107 * Protocol whitelist.
109 * Protocols and PHP wrappers allowed in URIs, and the validation rules
110 * that determine if a resouce may be loaded. Full support is not guaranteed
111 * for the protocols/wrappers specified
116 'allowed_protocols' => [
117 'file://' => ['rules' => []],
118 'http://' => ['rules' => []],
119 'https://' => ['rules' => []],
125 'log_output_file' => null,
128 * Whether to enable font subsetting or not.
130 'enable_font_subsetting' => false,
133 * The PDF rendering backend to use.
135 * Valid settings are 'PDFLib', 'CPDF' (the bundled R&OS PDF class), 'GD' and
136 * 'auto'. 'auto' will look for PDFLib and use it if found, or if not it will
137 * fall back on CPDF. 'GD' renders PDFs to graphic files. {@link * Canvas_Factory} ultimately determines which rendering class to instantiate
138 * based on this setting.
140 * Both PDFLib & CPDF rendering backends provide sufficient rendering
141 * capabilities for dompdf, however additional features (e.g. object,
142 * image and font support, etc.) differ between backends. Please see
143 * {@link PDFLib_Adapter} for more information on the PDFLib backend
144 * and {@link CPDF_Adapter} and lib/class.pdf.php for more information
145 * on CPDF. Also see the documentation for each backend at the links
148 * The GD rendering backend is a little different than PDFLib and
149 * CPDF. Several features of CPDF and PDFLib are not supported or do
150 * not make any sense when creating image files. For example,
151 * multiple pages are not supported, nor are PDF 'objects'. Have a
152 * look at {@link GD_Adapter} for more information. GD support is
153 * experimental, so use it at your own risk.
155 * @link http://www.pdflib.com
156 * @link http://www.ros.co.nz/pdf
157 * @link http://www.php.net/image
159 'pdf_backend' => 'CPDF',
162 * PDFlib license key.
164 * If you are using a licensed, commercial version of PDFlib, specify
165 * your license key here. If you are using PDFlib-Lite or are evaluating
166 * the commercial version of PDFlib, comment out this setting.
168 * @link http://www.pdflib.com
170 * If pdflib present in web server and auto or selected explicitely above,
171 * a real license code must exist!
173 //"DOMPDF_PDFLIB_LICENSE" => "your license key here",
176 * html target media view which should be rendered into pdf.
177 * List of types and parsing rules for future extensions:
178 * http://www.w3.org/TR/REC-html40/types.html
179 * screen, tty, tv, projection, handheld, print, braille, aural, all
180 * Note: aural is deprecated in CSS 2.1 because it is replaced by speech in CSS 3.
181 * Note, even though the generated pdf file is intended for print output,
182 * the desired content might be different (e.g. screen or projection view of html file).
183 * Therefore allow specification of content here.
185 'default_media_type' => 'print',
188 * The default paper size.
190 * North America standard is "letter"; other countries generally "a4"
192 * @see CPDF_Adapter::PAPER_SIZES for valid sizes ('letter', 'legal', 'A4', etc.)
194 'default_paper_size' => $dompdfPaperSizeMap[$exportPageSize] ?? 'a4',
197 * The default paper orientation.
199 * The orientation of the page (portrait or landscape).
203 'default_paper_orientation' => 'portrait',
206 * The default font family.
208 * Used if no suitable fonts can be found. This must exist in the font folder.
212 'default_font' => 'dejavu sans',
217 * This setting determines the default DPI setting for images and fonts. The
218 * DPI may be overridden for inline images by explictly setting the
219 * image's width & height style attributes (i.e. if the image's native
220 * width is 600 pixels and you specify the image's width as 72 points,
221 * the image will have a DPI of 600 in the rendered PDF. The DPI of
222 * background images can not be overridden and is controlled entirely
223 * via this parameter.
225 * For the purposes of DOMPDF, pixels per inch (PPI) = dots per inch (DPI).
226 * If a size in html is given as px (or without unit as image size),
227 * this tells the corresponding size in pt.
228 * This adjusts the relative sizes to be similar to the rendering of the
229 * html page in a reference browser.
231 * In pdf, always 1 pt = 1/72 inch
233 * Rendering resolution of various browsers in px per inch:
234 * Windows Firefox and Internet Explorer:
235 * SystemControl->Display properties->FontResolution: Default:96, largefonts:120, custom:?
237 * about:config *resolution: Default:96
238 * (xorg screen dimension in mm and Desktop font dpi settings are ignored)
240 * Take care about extra font/image zoom factor of browser.
242 * In images, <img> size in pixel attribute, img css style, are overriding
243 * the real image dimension in px for rendering.
252 * If this setting is set to true then DOMPDF will automatically evaluate
253 * inline PHP contained within <script type="text/php"> ... </script> tags.
255 * Enabling this for documents you do not trust (e.g. arbitrary remote html
256 * pages) is a security risk. Set this option to false if you wish to process
257 * untrusted documents.
261 'enable_php' => false,
264 * Enable inline Javascript.
266 * If this setting is set to true then DOMPDF will automatically insert
267 * JavaScript code contained within <script type="text/javascript"> ... </script> tags.
271 'enable_javascript' => false,
274 * Enable remote file access.
276 * If this setting is set to true, DOMPDF will access remote sites for
277 * images and CSS files as required.
278 * This is required for part of test case www/test/image_variants.html through www/examples.php
281 * This can be a security risk, in particular in combination with DOMPDF_ENABLE_PHP and
282 * allowing remote access to dompdf.php or on allowing remote html code to be passed to
283 * $dompdf = new DOMPDF(, $dompdf->load_html(...,
284 * This allows anonymous users to download legally doubtful internet content which on
285 * tracing back appears to being downloaded by your server, or allows malicious php code
286 * in remote html pages to be executed by your server with your account privileges.
290 'enable_remote' => env('ALLOW_UNTRUSTED_SERVER_FETCHING', false),
293 * A ratio applied to the fonts height to be more like browsers' line height.
295 'font_height_ratio' => 1.1,
298 * Use the HTML5 Lib parser.
300 * @deprecated This feature is now always on in dompdf 2.x
304 'enable_html5_parser' => true,