Download all images from URL into a single folder

There is plenty options, but easiest one is use command line. The wget is command line utility allows you to download whole web pages, files and images from the specific URL.

Follow command works just fine:

wget -nd -nc -np \
     -e robots=off \
     --recursive -p \
     --level=1 \
     --accept jpg,jpeg,png,gif \
     
     [example.website.com]

What's mean all that?

  • -nd, --no-directories: Do not create a hierarchy of directories when retrieving recursively.
  • -nc, --no-clobber: Do not overwrite existing files.
  • -np, --no-parent: Do not ever ascend to the parent directory when retrieving recursively.
  • -e robots=off: execute command robots=off as if it was part of .wgetrc file. This turns off the robot exclusion which means you ignore robots.txt and the robot meta tags (you should know the implications this comes with, take care).
  • -r, --recursive: Turn on recursive retrieving
  • -p, --page-requisites: Download all the files that are necessary.
  • -l depth, --level=depth: Specify recursion maximum depth level.
  • -A, --accept: Accepted file extensions.

Other useful download options:

  • -H: span hosts (wget doesn't download files from different domains or subdomains by default)
  • --random-wait: This option causes the time between requests to vary between 0.5 and 1.5
  • --wait 1.0: Wait the specified number of seconds between the retrievals.
  • --limit-rate=amount: Limit the download speed to amount bytes per second
  • -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36": Identify as agent-string to the HTTP server as Mozilla Firefox from Windows

Read more on wget manual page.

Real world example

Download all Homophones, Weakly images since 2011

wget -nd -nc -np \
     -e robots=off \
     --recursive -p \
     --level=1 \
     --accept jpg,jpeg \
     -H --random-wait \
     -U "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36" \
     http://homophonesweakly.blogspot.com/{2011..2019}

#bash #wget