What is Blank AcroForm?
A PDF with interactive field widgets layered on its pages. Readers like Acrobat render them as editable controls; plain viewers often show empty boxes.
PDF Form Filler
Fill PDF forms and save completed copies
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⚠️ Filling a form modifies the PDF — if it already carries a digital signature, that signature will no longer be valid afterwards.
1. Choose a PDF
Drop a PDF here or
Max 25 MB · up to 200 pages · encrypted PDFs are rejected.
2. Fields
Choose a PDF above — its fillable form fields will be listed here. If the PDF has no AcroForm fields this tool reports an explicit error. XFA forms are not supported.
Flatten is off: some PDF viewers may need to redraw field fonts, and text with Chinese/Unicode characters may render with a substituted font. Editable-appearance correctness is not guaranteed.
Preview
How to fill a PDF form
Load the form
Drop your fillable PDF onto the page — fields are detected automatically.
Fill in the fields
Type into text boxes, tick checkboxes, and pick options from dropdowns and lists.
Flatten and download
Save with flatten on to lock your answers, or off to keep fields editable.
Frequently asked questions
Which form fields are supported?
Text fields, checkboxes, radio buttons, dropdowns and list boxes in standard AcroForm PDFs. Dynamic XFA forms are not supported and will not render as fillable fields.
Can I type Chinese or other non-Latin text?
Yes. The Unicode value is preserved in the field, and the visible appearance is stored as a locally rendered appearance stream. Some viewers may redraw the text with their own fonts when you re-open or edit the file.
What does "flatten" mean when saving?
Flattening burns your answers into the page so they cannot be edited or re-filled. It is on by default; turn it off if the recipient needs to keep editing the fields.
Is my form data sent anywhere?
No. The PDF is parsed, filled and written entirely in your browser. Nothing is uploaded and no account is needed.
AcroForm fields, filled locally
Here is what each format is for, and when converting blank PDF forms into completed ones is the right move.
What is Completed PDF?
The same document with values written into the fields and appearance streams generated so every viewer shows the filled text, checked boxes and selected options.
When you need it
Use it for tax forms, applications, customs declarations and any fillable PDF you would otherwise print. Keep flatten enabled for final copies; disable it when someone else must still edit the form.