Fill in a PDF form online: type text in any PDF field

1 min read·25 July 2026

Received a PDF form you need to fill in digitally? With PDFrust's form-fill tool you can type text into any field — even in PDFs without interactive fields.

Two types of PDF forms

Interactive PDFs have clickable fill-in fields already built into the file — you click and type. Flat PDFs are essentially a scan or image with no fill-in fields. PDFrust handles both types.

Fill in a PDF form in PDFrust

Open the Fill Form tool on PDFrust. Upload your PDF form. PDFrust automatically detects fill-in fields. Click a field and type your data. For flat PDFs you can freely place text as an overlay. Download the completed PDF.

Fill PDF form

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Flatten the form afterwards

Want to prevent the recipient from changing the filled-in text? Use the flatten tool after filling to permanently embed the field content in the PDF.

Typical forms people fill in

Tax forms, lease agreements, registration forms, permit applications, medical questionnaires — all can be filled in with PDFrust without printing or scanning.