Take a full page screenshot with Firefox on the command-line

Question

I m running Firefox on a Xvfb in a VPS  What I want to do is to take a full page screenshot of the page   I can redirect Firefox to particular page using  firefox http   google com   and take a screenshot  inside X  using ImageMagick  import root -window output jpg   The problem is  most of the page need scrolling and I can t know the height beforehand   The other way is to pick a very big height  like 4000px  and then process the image and remove the useless part  But that s unnecessary processing   I found many Firefox add-ons  but I m looking for a solution that can be programmed using the Shell Command line   Edit  I ended up writing my own FireFox extension for doing this

User · Accepted Answer

The Developer Toolbar GCLI and Shift F2 shortcut were removed in Firefox version 60  To take a screenshot in 60 or newer    press Ctrl Shift K to open the developer console    Option   Command K on macOS  type  screenshot or  screenshot --fullpage    Find out more regarding screenshots and other features     For Firefox versions  lt  60   Press Shift F2 or go to Tools   Web Developer   Developer Toolbar to open a command line  Write   screenshot   and press Enter in order to take a screenshot   To fully answer the question  you can even save the whole page  not only the visible part of it   screenshot --fullpage   And to copy the screenshot to clipboard  use --clipboard option   screenshot --clipboard --fullpage   Firefox 18 changes the way arguments are passed to commands  you have to add  --  before them   You can find some documentation and the full list of commands here   PS  The screenshots are saved into the downloads directory by default

User · Answer

Firefox Screenshots is a new tool that ships with Firefox  It is not a developer tool  it is aimed at end-users of the browser   To take a screenshot  click on the page actions menu in the address bar  and click  take a screenshot   If you then click  Save full page   it will save the full page  scrolling for you     source  mozilla net

User · Answer

I ended up coding a custom solution  Firefox extension  that does this  I think by the time I developed it  the commandline mentioned in enreas wasn t there   The Firefox extension is CmdShots  It s a good option if you need finer degree of control over the process of taking the screenshot  or you want to do some HTML JS modifications and image processing    You can use it and abuse it  I decided to keep it unlicensed  so you are free to play with it as you want

User · Answer

Update 2018-07-23  As was just pointed out in the comments  this question was about getting a screenshot from the command line  Sorry  I just read over that  So here is the correct answer   As of Firefox 57 you can create a screenshot in headless mode like this   firefox -screenshot https   developer mozilla com   Read more in the documentation   Update 2017-06-15  As of Firefox 55 there is Firefox Screenshots as a more flexible alternative  As of Firefox 57 Screenshots can capture a full page  too   Original answer  Since Firefox 32 there is also a full page screenshot button in the developer tools  F12   If it is not enabled go to the developer tools settings  gear button  and choose  Take a fullpage screenshot  at the  Available Toolbox Buttons  section    source  developer mozilla org  By default the screenshots are saved in the download directory  This works similar to screenshot --fullpage in the toolbar

User · Answer

You can use selenium and the webdriver for Firefox   import selenium webdriver import selenium common  options   selenium webdriver firefox options Options     options headless   True with selenium webdriver Firefox options options  as driver      driver get  http   google com       time sleep 2      root driver find element by tag name  html       root screenshot  whole page screenshot png

User · Answer

I think what you are looking for is a utility which enables you to save a complete page opened in your browser into a png file  Most probably you are looking for a utility like commandlineprint2   After installing the extension  you just need to type the command   firefox -print http   google com -printfile   foo png

[shell] Take a full page screenshot with Firefox on the command-line

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