How to Fill Out a PDF Form — Free on Mac, Windows, iPhone & Android
How to fill out a pdf form depends on the type of PDF — interactive forms have fields you can click and type into, while flat PDFs (scanned or image-based forms) need text placed on top. This guide covers both cases on every platform, for free.
Quick answer: Go to rapidtools.online/fill-pdf-form, upload your PDF, and type into the highlighted fields (interactive forms) or click + Add Text and drag a text box over each blank (flat PDFs). Then click Save & Download PDF. Works on Mac, Windows, iPhone, and Android, with no account and no upload. On a Mac, Preview also fills interactive forms — open the PDF and click a field.
Fields light up or the cursor changes when you click a blank
Click a field and type
Tax forms, visa and job applications, insurance claims
Flat PDF
Looks like a form, but nothing happens when you click
Place typed text over the blanks
Scanned paper forms, older government PDFs, templates made in Word
ℹ️ Quick test: upload the PDF to the browser tool. It detects the fields automatically and shows a warning if there are none, so you know to use + Add Text.
1
Free Browser Tool — Both PDF Types
The browser tool handles interactive and flat PDFs on every device, and your document is never uploaded — important for tax forms, medical forms, and job applications.
Works in Chrome, Safari, Firefox, and Edge on computers and phones.
2
Upload your PDF
The tool checks for interactive fields and tells you what it found.
3
Fill the interactive fields
Click a highlighted field and type. Checkboxes and radio buttons work with a click, and dropdowns show their options. The Tab key moves to the next field. Use Prev and Next for other pages — your entries are kept.
4
Add text to flat pages
Set the Size and Colour first, then click + Add Text. A text box appears on the page — type in it and drag it over the blank line. Add one box per blank.
5
Click Save & Download PDF
The filled form downloads. Your answers are fixed into the page (the form is “flattened”), so they look the same in every viewer and cannot be changed by the person you send it to.
⚠️ No signature tool here: to sign the form, download it and open it in Sign PDF. The tool also does not check required fields, so make sure you have filled them all before you download.
Tips for Flat and Scanned Forms
Text size: 10–12 pt matches most printed forms. Use 9 or 10 pt for small boxes.
Colour: black is standard; blue is useful if the form asks for blue ink.
Set the size before you add a box: each new text box uses the Size and Colour chosen at that moment.
Line up carefully: the text lands in the same spot on the page in the downloaded PDF, so line each box up with its printed line before you save.
2
Mac — Preview
Preview fills interactive forms with no extra software, and can add text boxes to flat PDFs.
1
Open the PDF in Preview
Double-click the file. Interactive fields are detected automatically.
2
Click a field and type
Press Tab to move to the next field. Click checkboxes to tick them.
3
For flat PDFs, use a text box
Choose Tools → Annotate → Text, type your answer, and drag the box into place.
4
Save
Press Cmd+S. In Preview, filled fields stay editable, which is handy if you need to change an answer later.
3
Windows — Edge or Adobe Acrobat Reader
Windows has two free choices that fill interactive forms.
1
Microsoft Edge (built in)
Right-click the PDF → Open with → Microsoft Edge, click a field, and type. For flat PDFs, use Edge’s Add text tool. Press Ctrl+S to save.
2
Adobe Acrobat Reader (free download)
Open the PDF, click into the fields, and type. For flat forms, the Fill & Sign tool adds text boxes and a signature. Save a copy when you are done.
4
Chrome’s Built-In PDF Viewer
Chrome can fill simple interactive forms. Drag the PDF into a Chrome tab and click into a field.
⚠️ Limitation: Chrome cannot add text to flat PDFs. To save a filled form as a fixed copy, press Ctrl+P (or Cmd+P), choose Save as PDF, and save — Chrome rebuilds the page, keeping your text but removing the form fields.
5
iPhone and Android — In Your Browser
The browser tool works the same way on a phone, with no app.
From Files, iCloud Drive, Google Drive, or Downloads. It stays on your phone.
3
Tap a field to type, or tap + Add Text for flat pages
Drag each text box over its blank line.
4
Tap Save & Download PDF
On iPhone the file goes to the Downloads folder in Files. On Android it goes to Downloads.
Common Problems and Fixes
“There are no clickable fields, but it looks like a form.” The PDF is flat — it was scanned or exported without form fields. Use + Add Text.
“My typed text disappears when someone else opens the PDF.” Some apps save answers in a way other apps do not show. RapidTools fixes your answers into the page when you download, which avoids this.
“The tool says the PDF is password-protected.” If you know the password, remove it first with Remove PDF Password, then fill the unlocked copy.
“I need to sign after filling.” Download the filled form, then open it in Sign PDF.
After You Fill the Form
Sign it:Sign PDF — draw, type, or upload your signature.
✓ Interactive & flat PDFs✓ Checkboxes & dropdowns✓ File never uploaded✓ Works on all devices
Frequently Asked Questions
Go to rapidtools.online/fill-pdf-form, upload your PDF, and type into the highlighted fields — or click + Add Text to place text on a flat PDF. Then click Save & Download PDF. No account, no upload, no Adobe needed.
An interactive PDF has form fields built in — text boxes, checkboxes, radio buttons, and dropdowns you can click. A flat PDF only looks like a form; it has no fields, so you place typed text on top of it instead.
The PDF is most likely flat or scanned, so it has no fields to click. Open it in rapidtools.online/fill-pdf-form, click + Add Text, and drag a text box over each blank line.
Not from RapidTools — the download is flattened, so your answers are fixed into the page. Keep the blank original to fill again. Mac Preview saves filled fields so they stay editable.
No. Fill the form and download it, then open the filled PDF in rapidtools.online/sign-pdf to draw, type, or upload your signature.
Yes. Open rapidtools.online/fill-pdf-form in Safari, choose your PDF from Files, tap a field to type (or + Add Text for flat pages), then tap Save & Download PDF. The file goes to the Downloads folder in Files.
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