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Fill PDF forms

Fill in interactive form fields, then flatten.

Fill PDF forms Free

How to fill in a PDF form

  1. Add your form. Select a PDF that contains fillable form fields.
  2. Fill in the fields. The form fields are detected automatically - type your answers, tick boxes and choose options.
  3. Download. Select Download filled PDF. Turn on “Flatten” first if you want to lock the answers.

Frequently asked questions

My PDF has no fields to fill - why?
The document does not contain an interactive form (an AcroForm). If it is a flat scan, there are no fields to detect.
What does “Flatten” do?
It makes your answers a permanent part of the page so they can no longer be edited - useful before sending the form on.
Is this tool free?
Yes - it is completely free, with no account, no limits, and no watermarks added to your files. Every PDF tool on File-Extension works the same way.

All PDF tools

A complete, free PDF toolkit - pick another tool to keep working.

Merge PDFCombine several PDFs into one - drag to set the order. Split PDFSplit by ranges, every N pages, or one file per page. Compress PDFShrink file size with a quality you choose. Rotate PDFTurn pages 90°, 180° or 270° - all or selected. Organize PDFReorder, delete and rotate pages on one screen. Extract PDF pagesPull selected pages into a new PDF. Remove PDF pagesDelete unwanted pages from a PDF. Watermark PDFStamp text or an image over every page. PDF page numbersAdd page numbers, your format and position. Sign PDFType, draw or upload a signature - place it anywhere.
Fill PDF formsFill in interactive form fields, then flatten.
Protect PDFSet a password and permissions (AES-256). Unlock PDFRemove a password you already know. Repair PDFRebuild a damaged PDF structure. OCR PDFMake a scanned PDF searchable.