Why won't my fillable PDF form save what I typed?

You spent twenty minutes typing into a PDF form, saved it, and when you opened it again the boxes were empty. Or it looked perfect on your screen and the person you sent it to says it arrived blank. Both happen a lot, and the cause is usually one of four things you can find in a couple of minutes.

First, check what kind of form it is

Open the PDF and click or tap in one of the blanks.

• A cursor appears and you can type. It is a fillable form with real fields. Read on.
• Nothing happens. It is a flat form: lines and boxes drawn on the page, meant for a pen. There is nothing to save because there are no fields. Skip to "Filling in a form that will not cooperate" below.
• You see "Please wait..." and no form at all. It is a type of form built for Adobe software. See cause 3.

Cause 1: the answers went into a copy you never saw again

This is the most common one by a distance.

When you open an attachment straight from an email, many mail programs open a temporary copy. You type, press Save, and the answers go into that temporary file. The attachment in the email is unchanged, so the next time you open it you get the blank original.

Browser viewers have a similar trap. You can type into a form in Chrome, Edge or Safari, but nothing is kept until you save or download it, and closing the tab throws the answers away. Some viewers also ask, when you download, whether you want the original or the edited version. The original is the blank form.

Fix: save the attachment to your computer or phone first, open that saved file, fill it in, and use Save, or Save As with a new name. Then close it, open it again, and check your answers are there before you send it.

Cause 2: the answers are saved, but the other person's app does not show them

A form field stores two things: the value you typed, and an appearance that draws it on the page. Most apps write both. Some write only the value and leave the drawing to the next app, and not every app does it. The result is a form that looks full in the app you used and empty somewhere else.

This happens most often when a form is filled in one app and opened in another: filled in Preview on a Mac and opened in an office on Windows, for example, or filled on a phone and opened on a desktop.

Fix: fill it in with Adobe Acrobat Reader, which is free and draws every field it saves. Or, once the form is filled in, make a flat copy by printing it to PDF: Save as PDF in the Print dialog on a Mac, Microsoft Print to PDF on Windows. Printing to PDF makes the answers part of the page, so every reader shows them. The copy is no longer fillable, so keep the fillable version as well in case something needs changing.

Cause 3: the form only works in Adobe software

Some forms, often long government and insurance forms, are built in an older Adobe format that only Adobe Acrobat and Acrobat Reader fully understand. In other viewers they open as a single page saying "Please wait..." and that your viewer may not be able to display this type of document. Sometimes the fields appear but do not save properly.

Fix: download the form and open it in Adobe Acrobat Reader on a computer. A browser or phone viewer will not fill these properly, however long you wait. If the form has a button to validate or submit it, use that button in Reader.

Cause 4: the form is restricted

A PDF can carry restrictions that block changes, including filling in fields. Your reader usually says so, or the fields simply refuse to take typing.

Very old versions of Adobe Reader also refused to save typed answers unless the form's author had switched that on, and said so in a message. Current versions of Acrobat Reader save any form, so updating fixes that one.

Fix: ask the sender for a copy without restrictions. If it is a form you are entitled to fill in, and it opens without a password but blocks changes, Unlock PDF removes the restriction without asking for one. The unlocked copy keeps every page as it was but not working form fields, so it becomes a flat form, which you can fill in as described next.

Filling in a form that will not cooperate

When the fields will not behave, or the form is flat, put your answers on the page itself instead of in the fields. Answers written onto the page show in every reader, on every device, and print exactly as you see them.

Sign PDF does this from one panel, on a phone as well as a computer:

1. Open the form in Sign PDF.
2. Under Fields, choose Text for each answer, type it, and drag it onto the blank. Drag a corner to match the size of the form's printed text.
3. Use Check or Cross for tick boxes, Name for your name, and Date for the date in the format the form asks for.
4. Add your signature if the form needs one.
5. Choose Review & download (on a phone, Save), then Download PDF.

For a long form with many blanks, the PDF Editor works the same way with more control over fonts and sizes. The step-by-step guide linked below walks through it.

Two things to know about this approach. First, the answers sit on the page, not inside the fields, so a system that reads a form's field data automatically will not see them. That matters for a few online submission systems; it does not matter for a form a person will read or print. Second, the empty fields are still in the file, on top of the page. If a field has a white or coloured background, it can hide what you placed, so open the downloaded file and check every answer is visible before you send it.

A quick check before you send any form

1. Close the file after saving.
2. Open the saved copy from where it is stored, not from the email.
3. Look at every page.
4. If you can, open it in a second app as well: a browser and Acrobat Reader, for example.

If your answers show in both, they will show for the person you send it to.

If you made the form

When people tell you your form arrives blank, the fix is on your side. Fields that carry their own appearance show their answers everywhere. PDF Forms builds standard fields that way, and lets you try them in Preview before you send the form out.