A dog park membership application usually asks for more than your dog's name. Most parks want a photo of your dog, a copy of the vaccination record, and sometimes a photo of you and your dog together, all uploaded through a membership portal that only accepts JPG. iPhones save photos as HEIC by default, so a perfectly good photo of your dog can be refused with a vague "invalid file type" message.

  1. Keep the HEIC originals
    Do not overwrite your originals. Convert copies for the application and keep the HEIC masters, in case the park later asks for a clearer photo of your dog's face or markings.

  2. Do not just rename files to .jpg
    Renaming changes the extension, not the contents. The files will still be HEIC data, and the portal will still reject them.

  3. Convert the copies to JPG for the application
    If you need JPG files quickly, you can convert HEIC photos to JPG for dog park membership applications entirely in the browser: the conversion happens on your own device, nothing is uploaded, and no account is needed. Then check each JPG before submitting — confirm your dog is in focus, the photo is the right way up, and nothing important is cropped out.

Disclosure: I'm the developer of FileOnTap.