Fill PDF forms
Open a PDF form, fill in every field, and download the completed file. Nothing is uploaded.
Files are processed in your browser and never uploaded.
How to use Fill PDF forms
Add your file
Drop your PDF file onto the upload area, or tap the area to choose it from your device.
Run it
Press Fill PDF, Don →. The button stays disabled until there is something to work on, and each file shows its own progress and result.
Start over any time
Nothing is saved on a server, so reloading the page clears everything.
What this tool does
Reads text, checkbox, dropdown, list and radio fields
Text boxes, checkboxes, dropdowns, list boxes and radio groups are all read out of the PDF, so the whole form is fillable rather than just the text fields.
Shows current values so you can review and edit
Fields that already have values show them, so you can review and correct a partly completed form instead of starting again.
Optionally lock (flatten) the answers so they cannot be changed
Flattening writes the answers into the page itself, which stops anyone changing them afterwards and makes the file open the same way everywhere.
Live preview of the document for context
The document is previewed alongside the fields, so you can see the question a field belongs to rather than guessing from its name.
Runs in your browser, nothing uploaded
The PDF is opened, filled and saved by your browser, so a form with personal details on it never leaves your device.
Frequently asked questions
Is my PDF or the data I enter uploaded?
No. The PDF is read and filled entirely in your browser, so neither the file nor anything you type is ever sent to a server.
What kinds of fields can it fill?
Text boxes, checkboxes, dropdowns, multi-select lists and radio button groups in standard PDF form documents. It reads the existing fields and shows an input for each one, already filled with any current values.
My PDF has no fillable fields, what then?
Then there is nothing here to fill. Many documents look like forms but have no real fields. To add your own text or a signature, use the Sign PDF tool instead.
Can I stop people changing the answers afterwards?
Yes. Tick the lock option before downloading and the filled values are flattened into the page, so they appear as fixed text that can no longer be edited.
Why do some characters not appear?
Filled values use a standard Latin font, so most European text works. Unusual symbols or non-Latin scripts may not encode and can be left blank.
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