How to fill in a PDF form that has no fields

· 5 minute read

Some PDF forms are flat pictures with nothing to click. How to tell, how to type onto the lines anyway, and when to use OCR or build real fields.

You open a PDF form, click where a name should go, and nothing happens. There is no box, no cursor, only a printed line. The usual response is to print it, write on it and scan it, which is the slow route you were trying to avoid. There is a better way, and it starts with understanding why some forms do not work.

Two kinds of PDF form

An interactive form has fields built into it: text boxes, checkboxes, drop-down lists. A reader highlights them when you open the file and lets you type directly. A flat form has none. It is simply a page that looks like a form, produced by exporting from a word processor, or by scanning a paper form. To a computer, it is a picture with lines.

You can tell by looking at how the document behaves. If fields light up in a colour when you open it, it is interactive. If the page is inert, it is flat.

Filling a flat form

You add text to the page, as an overlay, in each place that needs an answer. An overlay is the right technique here. You are not changing the form; you are adding to it.

  • Open the form in an editor and choose the text tool.
  • Click on the line where the answer goes, and type.
  • Match the size to the line. Most forms use small type, and your answer should fit the space.
  • Zoom in to align the text exactly with the line.
  • Tick boxes by typing an "X" or "✓" in the box.

If the form is a scan

A scanned form is a photograph. You can still add text on top of it, but you will not be able to select or search what is printed on the form until it has been recognised with OCR PDF. That is not needed just to fill it in. It is useful if you want the finished document to be searchable.

Making fields for next time

If you are the one who created or maintains the form, do not make everyone work around it. An editor can draw real fields onto a page, so the next person can type straight in. It takes a few minutes and saves every future reader the same trouble.

Finishing

  • Read through every answer before you save. A flattened or overlaid form is hard to correct once it has been sent.
  • Add your signature, if one is asked for, with Sign PDF.
  • Save the filled copy under a different name from the blank form, so you can fill it in again for someone else.

If you need to change text that is already printed on the form, such as correcting a date, that is real editing and not filling in. The editor changes the words in the document’s own type.

Tools mentioned

  • Fill PDF form — Type into the boxes a form already has, and save it filled in.
  • Edit PDF — Change the words on the page, in the document’s own type.
  • OCR PDF — Make a scan searchable by reading the words off it.
  • Sign PDF — Draw or type your signature, and put it where it belongs.

More writing about PDFs · Loopdraw’s PDF tools