API Version 4

We have released the new major version of our rendering engine for HTML to PDF API and Screenshot API.

V4 is completely backwards compatible and can be used by just changing the API call url to https://restpack.io/api/html2pdf/v4/convert



  • Page Headers and Footers
    One of the most requested features. We now support automatically injecting header and footer templates to generated PDF documents. You can create these segments in full HTML and customize as you wish. It is also possible to insert dynamic data such as page number, document title etc into the headers and footers.
  • Custom Page Sizes
    In addition to pdf_page parameter, now it’s possible to send pdf_width and pdf_height parameters to set up a custom page size.


  • We used to generate PDFs on CSS media. However, the API now defaults to
    media in order to generate documents as close as to how they look on a browser. You can switch to using setting

Screenshot API


  • Ad / Cookie Warning Blocking
    We have two new options, block_ads and block_cookie_warnings in order to apply blocking rules to the page before conversion.

Fixed Shutters Not Firing

We have a shutter feature that can be used to wait for an element to be visible. However it was not working as expected in rare situations, causing the entire capture job to fail.

This functionality has been fixed and you can reliably use shutter options in your API calls.

Delay Option Improvements

We have made several improvements to delay option and the order which we apply the delay.

Delay is now applied after all javascript / css injection jobs are completed and several jobs causing implicit delays (such as prescrolling page to render lazy assets) are merged together so their delays will not stack together.

Wait mode: dom

It is now possible to pass wait=dom parameter in order to wait for domready event before render. The default is wait=load which waits for window.onload event.

This way you can create faster captures and handle such sites where loading hangs or takes a lot of time.

Faster API Calls

We have deployed a new capturing architecture which improves our capturing performance 30% in average. These changes have been made available to all users without any modifications required on your side.

Stability Fixes

Based on our monitoring, we identified several browser crashes occuring during captures. These have been mostly visible in the latest weeks. All issues should be resolved as of now.

New Service IP Addresses

In order to provide a better and uninterrupted service, we will be adding more servers to our Screenshot API. If you need to whitelist our capture servers please use the following IP addresses: