PDF Forms
Fill in PDF forms or create fillable fields.
or drag and drop PDFs here
Files are processed on your device and never uploaded.
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DownloadContinue with this file
To fill a PDF form, open the file: every fillable field is highlighted, so just click and type, tick checkboxes and choose options, then click Save PDF. To make a normal PDF fillable, draw new text fields and checkboxes on the page. Your data stays on your device.
How to PDF Forms
- Select your PDF fileClick “Select file” or drop your PDF file on the page.
- Choose your optionsFill in the highlighted fields, or add new text fields and checkboxes. Tick “Flatten form” to lock the answers.
- Click “Save PDF”The result is created on your device in seconds and downloads automatically.
Frequently asked questions
What does “flatten form” mean?
Flattening turns the fields into normal page content, so the answers can no longer be changed. Use it before sending a final version.
My PDF has no fields. Can I still fill it?
Yes. Add text fields where the answers go, or use Edit PDF to type directly on the page.
Is my personal information sent anywhere?
No. Forms are filled in your browser, so names, ID numbers and addresses never reach our server.
Is PDF Forms free?
Yes. PDF Forms on HappyPDF is completely free: no sign-up, no watermark and no daily limit.
Are my files safe?
Yes. Your files are processed inside your own browser and are never uploaded to HappyPDF’s server,, so nobody else can see them.
Does it work on phone, Mac and Windows?
Yes. It works in any modern browser (Chrome, Safari, Edge, Firefox, Samsung Internet) on Windows, macOS, Linux, Android and iPhone/iPad. Nothing to install.