Fill out a PDF form
Open a fillable PDF and complete its fields — text boxes, checkboxes, radio buttons and dropdowns — right in your browser. Optionally flatten the form so the values become permanent. The document never leaves your device.
100% private: files are processed in your browser and never uploaded to any server.
How it works
- Drop a fillable PDF into the box above — its form fields are detected and listed.
- Complete the fields you need; tick “Flatten” if the result should no longer be editable.
- Click “Fill & download” to get the completed PDF.
Filling a form without printing it
Many official PDFs are interactive forms: applications, tax documents, registration sheets with real text boxes and checkboxes built in. This tool detects those fields and lets you fill them on screen, so you can complete a form neatly and legibly without printing it, writing by hand, and scanning it back. The result is a clean, professional-looking document.
What "no fillable fields" means
If the tool reports no form fields, your PDF is not an interactive form — it just looks like one. It is probably a scan or a flat document where the boxes are drawn but not functional. You have two good options: run a scanned form through the OCR tool if you need its text, or use the Sign PDF tool to place text and marks visually anywhere on the page, which works on any PDF regardless of whether it has real fields.
Flattening for a final version
Once a form is filled, you can optionally flatten it. Flattening converts the filled fields into ordinary page content: the values become permanent, can no longer be edited, and display identically in every viewer. It is the right choice when submitting a final copy, since it prevents accidental changes and rendering differences between PDF readers. Leave it unflattened if you might still need to adjust the answers.
Sensitive data, handled locally
Forms are full of exactly the data you would not want on someone else's server: names, addresses, ID numbers, bank details. Because the form is parsed and filled entirely in your browser, none of what you type is uploaded. The completed PDF is generated on your device and downloaded straight to you.
Frequently asked questions
It says my PDF has no form fields. Why?
Your PDF is not an interactive (AcroForm) form — it is probably a scan or a flat document that only looks like a form. Run scanned forms through the OCR tool, or use the Sign PDF tool to place text and marks visually.
What does “flatten” do?
Flattening converts the filled fields into regular page content: the values become permanent, cannot be edited, and display identically in every viewer. Recommended when submitting a final version.
Are my answers uploaded anywhere?
No. The form is parsed and filled entirely in your browser — sensitive data like IDs or bank details never leave your device.
Which field types are supported?
Text fields (single and multi-line), checkboxes, radio button groups, dropdowns and option lists. Signature fields are not fillable — use the Sign PDF tool for those.
Should I flatten the form?
Flatten when submitting a final version — it makes the values permanent and consistent across readers. Leave it unflattened if you may still edit the answers later.