Re: [selenium-users] Save image from page to disk.

[Maxim Vorobev]

You can

1. Grab full-page screenshot

2. Get WebElement position

3. Get WebElement dimension

4. Crop WebElement image from page screenshot

5. Save WebElement image to disk

:)

On Tue, Apr 9, 2013 at 9:02 AM, Юрий Бушев <bush...@gmail.com> wrote:

Hi All!

I have the following trouble, I want to save image, which is already presented on the page in FireFox driver to the disk.

Image are placed between tags <img id="image"> with known id.

I could not get image by "src" link. Because image will change by "src" script.

How I can get data of this image with Selenium and Java? May be I can take a screenshot only of wanted DOM element?

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[David Lai]

Something I have on my todo list (WTFramework) is figure out how to leverage the JS code in this framework for taking screenshots for individual webelements. 

http://html2canvas.hertzen.com/examples.html

In theory,an element can be written to an HTML canvas, which then can have it's data encoded to base64 using javascript, then returned back via webdriver.executeScript() call.  

[David]

What Maxim describes, implemented as (Java) code can be seen here:

https://groups.google.com/d/msg/selenium-users/8atiPIh39OY/Gp9_KEXnpRUJ

for other languages, the code will differ, though the Selenium APIs called will remain the same.

[Andreas Tolfsen]

mang...@gmail.com writes:

> On Tuesday, April 9, 2013 12:55:32 AM UTC-7, Maxim wrote:
>>
>> You can
>> 1. Grab full-page screenshot
>> 2. Get WebElement position
>> 3. Get WebElement dimension
>> 4. Crop WebElement image from page screenshot
>> 5. Save WebElement image to disk

Please note that Selenium isn't designed for this purpose. A much
better approach if you indeed need to save an image to disk (I'm not
sure why you'd want to do that), getting the img element's src attribute
from Selenium, and passing this on to curl or wget would be a much
better approach.