Detect and fill PDF form fields, then download the completed form.
Your file stays private. All processing happens locally in your browser using pdf-lib Γ’β¬β no uploads, no servers. We detect form fields automatically, let you fill them, and flatten the result.
Fill PDF forms online for free. This tool detects all form fields in your PDF Γ’β¬β including text fields, checkboxes, dropdown menus, list boxes, and radio buttons Γ’β¬β and displays them in an easy-to-use interface. Fill in the values, click submit, and download the completed form with fields permanently flattened.
All processing happens in your browser using pdf-lib Γ’β¬β no uploads, no servers, complete privacy. Your data never leaves your device.
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Interactive PDF forms let you enter information directly in the file, but only when the right tool is at hand. This form filler detects every fillable field in your document, presents them in a straightforward list, and writes your answers into the PDF before downloading the finished result. Everything happens in your browser with pdf-lib, so the form never leaves your device and no account is needed to get started.
The tool scans your PDF and lists each field it finds, labeled with its name and its type. Text boxes accept whatever you type, checkboxes switch between checked and unchecked, and dropdowns, list boxes, and radio groups show their available choices so you pick from them rather than guessing at values. Signature and button widgets are left alone because they cannot be filled through this workflow; everything that can be completed is, and anything that cannot is simply skipped.
Field names with underscores are cleaned up for display, so a field stored as first_name reads naturally as First Name when you fill it in.
Free users can work with forms up to 10 MB. A Premium subscription raises the ceiling to 100 MB and removes the wait before the download starts.
A filled but unflattened form keeps its fields live, which means the data can be edited, cleared, or even rewritten by anyone who opens the file. Flattening bakes the values into the page so they read like ordinary printed content. That is exactly what you want when submitting an application, sharing a completed record, or archiving a form that should stay the way it was filled.
Pro tip
Keep a copy of the original blank form before you fill it in. Even though this tool lets you restore your upload, holding onto your own backup means you can start fresh if you change your mind or need to fill the same form again for a different purpose.
Filling forms online removes the print-sign-scan loop entirely. The document stays digital, the values are entered cleanly, and the finished PDF is ready to email or upload the moment it downloads. Because processing stays on your device, even sensitive forms like tax documents and medical intake sheets can be completed without exposing their contents to a third-party server.