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Way to Auto-Compress Uploaded Images in Gravity?

  1. Our form requires people upload some pictures ~ 4 inside Gravity.
    Just wondering if there is a way to auto compress uploaded images before it sends it out as email. Sometimes the uploaded jpg's are 4MB+ and this is a pain to download.
    ideally we would love to somehow use Yahoo Smush it plugin (already installed in wordpress ) to auto-smush the uploaded images..
    Any suggestions?

    Posted 7 years ago on Monday March 11, 2013 | Permalink
  2. You could use the gform_pre_submission_filter to compress the image, then send the compressed image in the email, rather than the uploaded image.

    Posted 7 years ago on Wednesday March 13, 2013 | Permalink
  3. Hi Chris,

    Thanks for the suggestion.
    I took a look at that method may work.
    Is there any documentation on how that filter can be used to compress image?

    Posted 7 years ago on Thursday March 14, 2013 | Permalink
  4. The filter itself does not compress the image. You will need to write a function in PHP to do the image compression (using built in PHP functions or libraries, or to use an external service like and then the gform_pre_submission_filter will be used to run your code at the correct time.

    Posted 7 years ago on Thursday March 14, 2013 | Permalink