Free PDF Form Filler

The PDF Form Filler is a free online tool that detect and fill acroform fields in pdf documents — text fields, checkboxes, dropdowns, and radio buttons. download the filled pdf instantly.. It runs entirely in your browser with no installation or sign-up needed.

AcroForm PDFs created with Adobe Acrobat or similar tools. XFA-based forms are not supported.

Text fields, checkboxes, dropdown lists, and radio button groups are all supported.

Yes. Form data stays in your browser — nothing is uploaded to any server.

Absolutely. The PDF Form Filler processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the PDF Form Filler is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the PDF Form Filler in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Since the PDF Form Filler processes files in your browser, the size limit depends on your device's memory. Most devices can handle PDFs up to 50-100MB without issues.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The PDF Form Filler works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

AcroForm is the standard, widely supported interactive form format introduced in early PDF versions — its fields are stored directly in the PDF and open correctly in almost any reader. XFA (XML Forms Architecture) is an older Adobe-specific format that wraps the form in an XML layer and often requires Adobe Acrobat or Reader to display and fill properly; many browsers and lightweight viewers show only a warning page instead. The practical takeaway is that AcroForm is portable while XFA is not, which is why most modern government, tax, and application forms are built as AcroForms. This tool fills AcroForm fields — text boxes, checkboxes, dropdowns, and radio groups — entirely in your browser. If your file is XFA, it will report no detectable fields. Upload your form above to check which type it is.

If a PDF looks fillable but the tool reports no fields, it usually means there are no interactive AcroForm fields to detect. The most common cause is a flat or scanned document: a printed form photographed or scanned into a PDF is just an image, so the boxes you see are pixels, not editable fields. Another cause is an XFA form, which stores its fields in an XML layer this tool cannot read. Some PDFs also have their form fields flattened, meaning the fields were permanently merged into the page and are no longer interactive. In all three cases the file shows lines and boxes but contains nothing typeable. To fill a scanned form, you would first need to add real fields or annotate it as an image. Upload your PDF here to instantly see whether it contains detectable form fields.

Yes. This tool writes your answers back into the original AcroForm fields but does not flatten them, so the downloaded file keeps its fields live and editable. That means you can reopen the filled PDF later in this tool or any PDF reader and change an answer if a date, address, or selection needs updating — useful for forms you reuse or revise. The trade-off is that editable fields can still be altered by anyone who opens the file, so they are not locked. If you need the values permanently fixed and uneditable, you would flatten the form in dedicated software after filling it. The downloaded copy is saved with a _filled suffix, leaving your source file untouched. Fill your form above and download a version you can keep editing.

Not directly, because a scanned or printed-then-photographed form is a flat image with no interactive fields for the tool to detect. The boxes and lines you see are part of the picture, so there is nothing to type into and this tool will report that no AcroForm fields were found. To complete such a form you have two main paths: ask the sender for the original fillable version, which is often an AcroForm PDF you can fill here, or convert the scan into a form by adding real text fields in dedicated PDF software. If you simply need text placed on top of a scan, an image-annotation or PDF-markup tool is the right fit instead. For genuine interactive forms — applications, intake sheets, consent and registration documents — upload the file above and the tool detects and fills every field in your browser.

You do not need Acrobat or any paid software to complete a fillable PDF. This tool detects the interactive AcroForm fields in your document and lays them out as a simple form you type into, then writes your answers back into a clean copy you download — all free and with no sign-up. Drop in the PDF, fill the text boxes, tick the checkboxes, and pick from the dropdowns or radio groups it finds, then click Fill & Save PDF. Because everything runs locally in your browser using the open-source pdf-lib library, sensitive details like names, dates of birth, and identification numbers never leave your device, which matters for tax, medical, or government paperwork. The result is crisp, aligned text rather than handwriting on a printout. Upload your form above to fill it in seconds without installing anything.