Check Boxes in a PDF
Tick real checkbox fields with a click, or place a checkmark or cross anywhere on a form that doesn't have interactive checkboxes at all.
Free to use. No signup required. Your files stay on your device.
Checking the right box, however the form was built
Surveys, applications, intake forms and checklists all lean heavily on checkboxes — and PDFs handle them in two very different ways. Some forms have real checkbox and radio-button fields built in, which this tool detects automatically: click one and it toggles, and radio button groups stay mutually exclusive the way the form intended, so choosing one option correctly clears any other you'd previously selected.
Plenty of other forms only look like they have checkboxes — a small square drawn as part of a scanned page or a flat, non-interactive PDF, with nothing clickable behind it. For those, the Checkmark and Cross tools let you drop a mark directly on top of the drawn box, sized and positioned however you like.
Either way, the result in your downloaded PDF is the same: a form that reads as correctly filled out, whether the checking happened through a real interactive field or a mark placed by hand.
How It Works
Upload the form
The tool detects any real checkbox or radio-button fields and highlights them automatically.
Check the right boxes
Click real checkbox fields directly, or use the Checkmark or Cross tool to mark boxes drawn on a flat or scanned PDF.
Download the completed form
Your selections are saved permanently into the exported PDF.
Frequently Asked Questions
- What's the difference between a real checkbox field and a placed checkmark?
- A real checkbox field is part of the PDF's own form structure — the tool detects it and you click to toggle it. A placed checkmark or cross is a mark you draw on top of the page yourself, for forms that only look like they have a checkbox but don't have an interactive field there.
- Do radio button groups work correctly?
- Yes — selecting one option in a real radio-button group automatically clears any other option in that same group, matching how the form was designed to behave.
- Can I use a cross (X) instead of a checkmark?
- Yes, both tools are available separately, so you can pick whichever mark matches the form's own convention.
- Is my PDF uploaded to a server?
- No. Every part of this tool — reading your PDF, letting you fill and sign it, and generating the completed file — runs in your own browser. Your document is never uploaded anywhere, and you don't need to create an account.
Before you rely on this for something important
FormFiller is a document editing and filling tool. It does not provide legal, financial, tax or immigration advice, does not check whether a form has been filled out correctly, does not verify signatures, does not guarantee legal validity of a signed document, and does not submit forms to any government agency, employer or other organization on your behalf. Always review your completed form carefully, and check with a qualified professional if you're unsure whether a document meets a legal or contractual requirement.