docker-Manet

There is only one true thing: instantly paint what you see. When you've got it, you've got it. When you haven't, you begin again. All the rest is humbug. docker-Manet is the docker format of Manet REST API server which allows capturing screenshots of websites using various parameters. It is a good way to make sure that your websites are responsive or to make thumbnails.

docker-Manet could use PhantomJs engines to work.

• PhantomJS runs on top of WebKit and JavaScriptCore. docker-Manet exposed port is 8891

REST API

REST API is available on "<$your docker ip>:<$your docker port>/" using:

• GET method
• POST method with Content-Type:
  • application/json
  • or application/x-www-form-urlencoded

Few rules:

• The "url" parameter must be specified.
• Query parameters will be used in priority and override others.

Query parameters

url

Website address (URL). This is the only required parameter for the HTTP request. It is unnecessary for the most cases to configure scheme. Example: "github.com".

width

This property allows to change the width of the viewport, e.g., the size of the window where the webpage is displayed (default: 1024)

height

This property allows to change the height of the viewport. If width is defined and height is not defined, than full page will be captured.

clipRect

This property defines the rectangular area of the web page to be rasterized. Format: "top,left,width,height", example: "20,20,640,480".

zoom

Zoom factor of the webpage display. Setting a value to this property decreases or increases the size of the web page rendering. A value between 0 and 1 decreases the size of the page, and a value higher than 1 increases its size. 1 means no zoom (normal size). (default: 1).

quality

The compression quality. A number between 0 and 1 (default value: 1). Quality parameter doesn't work for PNG file format.

delay

Do a pause during the given amount of time (in milliseconds) after page opening (default: 100).

format

Indicate the file format for output image (default is "png"). Possible values: jpg, jpeg, png, gif, pdf

agent

String to define the "User-Agent" in HTTP requests. By default, it is something like:

• PhantomJS: Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit/534.34 (KHTML, like Gecko) PhantomJS/1.9.0 (development) Safari/534.34
• SlimerJS: Mozilla/5.0 (X11; Linux x86_64; rv:21.0) Gecko/20100101 SlimerJS/0.7

headers

This property specifies additional HTTP request headers that will be sent to the server for every request issued (for pages and resources). Format: "key1=value1;key2=value2;..." Headers names and values get encoded in US-ASCII before being sent. Please note that setting the 'User-Agent' will overwrite the value set via "agent" parameter.

user

User name to give to HTTP Basic authentication.

password

Password to give to HTTP Basic authentication.

js

false to deactivate javascript in web pages (default is true).

images

false to deactivate the loading of images (default is true).

force

Use the force reloading of web page without using cache (default is false).

callback

Return an empty response immediately (HTTP 200 OK), then send a POST request to the callback URL when the screenshot is ready (with image in the body).

Query examples

For a quick test with the command line (using curl), type:

curl http://<$your docker ip>:<$your docker port>/?url=github.com > github.png
curl -H "Content-Type: application/json" -d '{"url":"github.com"}' http://<$your docker ip>:<$your docker port>/ > github.png
curl -H "Content-Type: application/x-www-form-urlencoded" -d 'url=github.com' http://<$your docker ip>:<$your docker port>/ > github.png

or (using wget)

wget http://<$your docker ip>:<$your docker port>/?url=github.com -O github.png

Here are some query examples that could be executed by any REST API client:

# Take a screenshot of the github.com.
GET /?url=github.com

# Custom viewport size. Return a 800x600 PNG screenshot of the github.com homepage.
GET /?url=github.com&width=800&height=600

# Clipping Rectangle. Return a screenshot clipped at [top=20, left=30, width=90, height=80]
GET /?url=github.com&clipRect=20%2C30%2C90%2C80

# Zoom rendered page in 2 times.
GET /?url=github.com&zoom=2

# Specify image output format.
GET /?url=github.com&format=jpeg

# Disable JavaScript. Return a screenshot with no JavaScript executed.
GET /?url=github.com&js=false

# Disable images. Return a screenshot without images.
GET /?url=github.com&images=false

# Custom User Agent.
GET /?url=github.com&agent=Mozilla%2F5.0+(X11%3B+Linux+x86_64)+AppleWebKit%2F537.36+(KHTML%2C+like+Gecko)+Chrome%2F34.0.1847.132+Safari%2F537.36

# HTTP Basic Authentication. Return a screenshot of a website requiring basic authentication.
GET /?url=mysite.com&user=john&password=smith

# Screenshot delay. Return a screenshot of the github.com homepage 1 second after it's loaded.
GET /?url=github.com&delay=1000

# Force page reloading. Return a screenshot without using file cache.
GET /?url=github.com&force=true

# Specify custom HTTP headers.
GET /?url=google.com&headers=User-Agent=Firefox;Accept-Charset=utf-8

# Asynchronous call.
GET /?url=github.com&callback=http://localhost:8891

Sandbox UI

Sandbox UI is available on "/" by direct GET request without "url" query parameter. It is a simple playground to build HTTP requests and try them.

Demo instance is available on Heroku: https://manet.herokuapp.com

docker-Manet is prodly dockerized by
https://earlyclaim.com RESERVE YOUR FAVORITE USERNAME IN NEW STARTUPS the man behind it is Walter Franchetti https://twitter.com/frnwtr