VellixioTech

Form Filler

Detect and fill PDF form fields

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Max file size: 50MB. Your files stay on your device.

Fill out PDF forms on screen

Applications, tax forms, consent slips and registration sheets often arrive as PDFs that you are expected to print, fill in by hand and scan back. Form Filler lets you type your answers directly onto the PDF, so you can complete a form neatly on screen and return it without ever touching a printer.

Typed responses are clearer and more professional than handwriting, and they make the whole process faster — open, fill, download, send.

Interactive forms and flat forms

Upload the form, type your details into the fields or onto the blank spaces, and download the completed PDF. Both kinds of form work: interactive PDFs with real form fields built in, and flat forms that are simply a page with lines to write on.

The difference matters because the second kind is far more common than people expect. Many forms distributed as PDFs were designed for printing and have no interactive fields at all, which is why other software refuses to let you type on them. Being able to place text anywhere on the page is what makes those usable without a printer.

Flatten before you send

If you filled interactive fields, flatten the document before returning it. This merges your answers into the page itself rather than leaving them as live field values.

Two things go wrong otherwise. Some viewers display filled values while others show the empty template, which is why a completed form occasionally arrives at the other end looking blank — a genuinely common and frustrating failure. And live fields remain editable by whoever receives the document, so the answers you submitted can be altered afterwards.

Flattening removes both problems. Everyone sees the same thing, and what they see is fixed.

Getting the details right

Match the size and alignment of your text to the form's printed labels. Text that sits noticeably above or below the line, or in a conspicuously different size, makes an otherwise valid submission look improvised.

Check the completed form at full page size rather than zoomed in. Answers that appeared correctly positioned while working closely can sit visibly off-line when the whole page is in view, and text can overflow the box it belongs to.

Where a form asks for initials on multiple pages or a signature in more than one place, work through the whole document before downloading. Returning a form with page four missed is the most common reason for one to come back.

Personal details stay on your machine

Form filling happens in your browser, so what you type is never uploaded or stored. This is the relevant guarantee given what forms actually contain — the tool's typical use involves entering a date of birth, an address, a national insurance or social security number, bank details, medical history or immigration information.

That category of data is exactly what you should be reluctant to type into a web page that transmits it somewhere. Here it goes into the document on your device and nowhere else.

Frequently Asked Questions

Is the PDF Form Filler free?

Yes. Filling out PDF forms online is completely free with no account or subscription.

Does it work with both fillable and flat PDF forms?

Yes. The tool works with interactive fillable forms as well as flat (non-interactive) PDFs where you can type text over the fields.

Is my form data kept private?

Yes. Everything you type into the form stays in your browser — your data is never transmitted to our servers.

Can I download the completed form as a PDF?

Yes. Once you have filled in all the fields, download the completed form as a standard PDF ready to submit or share.