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CSS counter for total pages? #1636

CSS counter for total pages? #1636

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Read some suggestions on using:

 footer .pagenum:before

To get the current page number. Is it possible to get the total number of pages through css as well, to show something like Page 4 of 5 ?

The text was updated successfully, but these errors were encountered:

https://codepen.io/Bhupinderkumar/pen/gKzKGw here is pen you can see the total page number at the bottom of the page

Here is way to do it, while still being able to use CSS on the paging information.

The current page number can be generated via CSS features, as documented in samples, but the total page count must be injected after the rendering happened. To do that we use an arbitrary placeholder, DOMPDF_PAGE_COUNT_PLACEHOLDER , in our HTML template and replace that string in the entire rendered PDF, juste before it get outputted.

> html> head> title>footitle> style> footer < /* Place the footer at the bottom of each page */ position: fixed; left: 0; right: 0; bottom: 0; /* Any other appropriate styling */ color: #4f82d6; font-weight: bold; > /* Show current page number via CSS counter feature */ .page-number:before < content: counter(page); > style> head> body> footer> Page span class pl-s">page-number">span> of DOMPDF_PAGE_COUNT_PLACEHOLDER footer> Very long content spanning multiple pages here . body> html>

function htmlToPdf(string $html): string < $dompdf = new Dompdf(); $dompdf->loadHtml($html); $dompdf->setPaper('A4'); $dompdf->render(); injectPageCount($dompdf); return $dompdf->output(); > /** * Replace a predefined placeholder with the total page count in the whole PDF document * * @param Dompdf $dompdf */ function injectPageCount(Dompdf $dompdf): void < /** @var CPDF $canvas */ $canvas = $dompdf->getCanvas(); $pdf = $canvas->get_cpdf(); foreach ($pdf->objects as &$o) < if ($o['t'] === 'contents') < $o['c'] = str_replace('DOMPDF_PAGE_COUNT_PLACEHOLDER', $canvas->get_page_count(), $o['c']); > > >

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Advanced HTML to PDF API features

Say you have an HTML table with 100 rows. When you render a long table like this in a browser, the table content can expand forever. In the browser world, you don’t need to worry about pages at all—which page your table rows land on, how many can fit on a page, etc.

Render this same table in a PDF, however, and you’ll need to deal with page breaks. If a table is longer than a single page, or starts half way down a page, rows will need to be broken up and rendered across multiple pages.

Turns out a page full of table rows without header context isn’t very user friendly. For example, if you printed out the following, its second page would be a little confusing without the headers. What is that 3rd column again?

Ideally we’d render the table headers on each page that shows the table’s rows, then someone doesn’t need to look at a previous page to understand the headers.

Table header repeating like this is supported and is turned on by default! All you have to do is make sure you put your header th in a thead element:

    Qty Description Price Subtotal     2 Blue large widgets $15.00 $30.00   

Then the headers render again on pages that get the overflow rows:

Repeating also works with table footers when a tfoot element is used:

  .   2 Blue large widgets $15.00 $30.00    Table Footer    

Here’s the header and footer repeating:

All the table context, all the time!

Turning header repeating off

While table header repeating is on by default, you can turn it off with a custom CSS rule -fs-table-paginate :

table.no-header-repeat  -fs-table-paginate: none; > 

Or you can disable it by simply not using thead , tbody , and tfoot elements.

Forcing page breaks

Sometimes you need a piece of content to always start on its own page, no matter the content that came before it. You can force page breaks with the page-break-before: always rule on any element. It will create a new page, then set the element with the page-break-before CSS rule as the first element of that page.

Here’s a simple example with three pages:

  Lonely Page 1 content  class="new-page">Page 2 content  class="new-page">Page 3 content 

.new-page  page-break-before: always; > 

Rendering page numbers

Page numbers are a fixture in most PDFs. Often PDFs will have a Page 2 of 3 style numbering scheme on each page.

You achieve this by injecting page numbers into any element by using a bit of special CSS. You target the content of your chosen element’s ::after pseudo-element with a special directive:

 class="page-container"> Page  class="page"> of  class="pages">  

.page-container .page::after  content: counter(page); > .page-container .pages::after  content: counter(pages); > 

The targeted elements can be on any page you’d like. But it’s likely most important to render the page number information on each page, in one of the margins, which brings us to our next section.

Rendering HTML elements in the page margins

Many PDFs have content in the margins on every page. For example, page numbers, your company name, phone number, etc. The HTML renderer allows rendering anything your heart desires in the margins by way of a «running» element.

You render an element in the body like any other element, define the element as a «running» element, then tell each page to use that element in one of the defined margin areas.

Here’s an example that uses the page number example above and renders it in the bottom right margin on every page.

   class="page-container"> Page  class="page">   . content.  

.page-container  /* Define this element as a running element called "pageContainer" */ position: running(pageContainer); > @page  /* Use any of these locations to place your margin elements: @top-left, @top-left-corner @top-center @top-right, @top-right-corner @bottom-left, @bottom-left-corner @bottom-center @bottom-right, @bottom-right-corner */ @bottom-right  /* Reference "pageContainer" to be the content for the bottom right page margin area */ content: element(pageContainer); > > 

The output using the page breaks and applying a little styling to the page numbers:

Element location

A «running» element’s location in the HTML determines which pages it shows on. If you want it in a margin element on all pages, just make sure to place the «running» element before all non-running HTML elements in the HTML code. For example, place all your margin elements that show on all pages right after the element.

To see this behavior in action, using the page number and page break examples above, we can start the page numbering on the 2nd page by placing the running pageContainer element on the second page.

 Lonely Page 1 content  class="new-page">Page 2 content  class="page-container"> Page  class="page">   class="new-page">Page 3 content 

.page-container  /* Define the this element as a running element called "pageContainer" */ position: running(pageContainer); > .new-page  page-break-before: always; > @page  @bottom-right  /* Reference "pageContainer" to be the content for the bottom right page margin area */ content: element(pageContainer); > > 

Here’s the output. Notice there is no Page 1 on the first page:

Positioning margin elements

Margin elements may not render exactly where you want them to. It’s possible to place them exactly where you want with margin-top .

 class="margin-content"> Margin Content 

.margin-content  position: running(marginContent); /* Position the element with margins */ margin-top: 10px; /* Style margin element like any other */ font-size: 12px; color: #c00; > @page  @top-left  content: element(marginContent); > > 

You made it!

Hopefully these features go a long way to giving you full control in creating PDFs that look exactly as you want.

There are even more advanced features in there that we’ll be talking about in coming months. If you experiment and are struggling to accomplish what you’d like with the HTML to PDF API, don’t hesitate to contact us:
support@useanvil.com

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HTML2PDF.js Add Page Numbers at Top in PDF Using JavaScript

In this tutorial, you will learn how to add page numbers in PDF documents using JavaScript and HTML2PDF.js library. The full source code of HTML2PDF.js Page Numbering is given below.

HTML2PDF.js Page Numbering Source Code

index.html

        div < outline: red solid 1px; page-break-inside: avoid; >#nextpage1     
 
   

Output Screenshot

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