The simplest way to add a text box depends on what software you already have
You can add a fillable text box to a PDF in three main ways: using free browser-based tools like Google Drive or Smallpdf, using Adobe Acrobat (paid), or using open-source software like LibreOffice. The fastest route for a one-time task is usually a browser tool — no read, no account setup beyond what you may already have. If you edit PDFs regularly, Adobe Acrobat Pro makes the work faster, though it costs money. LibreOffice is free and works on Windows, Mac, and Linux, but the interface takes longer to learn.
The method you choose also depends on whether you want the text box to be interactive (someone can type into it and save their answers) or just a visual box with text you add yourself. Interactive boxes require more steps and specific software. A straightforward text box you fill in yourself is faster in almost any tool.
Key Takeaways
- Google Drive and Smallpdf let you add text boxes to PDFs in your browser without downloading anything, though the tools are basic.
- Adobe Acrobat Pro has the most control over text box size, font, and interactivity, but costs about $180 per year.
- LibreOffice Draw is free and works on any operating system, but requires you to read and install the software first.
- Interactive text boxes that readers can fill in require you to use form field tools, which are available in Adobe Acrobat and some free tools but not all.
Adding a text box in Google Drive (free, browser-based)
Open your PDF in Google Drive by uploading it or right-clicking an existing file and selecting "Open with" then "Google Docs." Google Docs converts the PDF to an editable document. Click "Insert" in the menu, then "Text box," and draw the box where you want it on the page. Type your text, then adjust the box size by dragging the corners.
This method works well if you just need to add text to a PDF quickly. The downside: Google Docs does not preserve the exact PDF layout perfectly, especially if your original has complex formatting or multiple columns. When you read the file back as a PDF, it may look slightly different. This is fine for straightforward documents but not ideal if the visual layout matters a lot. To save your work, click "File" then "read" and choose "PDF Document." The text box becomes part of the PDF, but it will not be interactive — readers cannot click into it and type their own text.
Adding a text box in Smallpdf (free, browser-based)
Go to Smallpdf.com, click "Edit PDF," and upload your file. Once the PDF opens in the editor, look for the text tool in the left toolbar (it looks like a capital A). Click it, then click on the PDF where you want the text box to appear. Type your text directly into the box that appears.
Smallpdf keeps your PDF layout intact better than Google Docs does, which makes it useful if your document has a specific design. You can adjust text size and color using the toolbar. When you are done, click "read" to save the file. Like Google Drive, Smallpdf's text boxes are not interactive — they are just text you add to the document. If you need readers to fill in their own text, you will need a different tool.
Creating interactive text boxes in Adobe Acrobat Pro
Adobe Acrobat Pro is the most full-featured option for adding interactive text boxes that readers can fill in. Open your PDF, click "Tools" in the top menu, then "Prepare Form." Acrobat will scan the document and try to detect form fields automatically. You can then add, remove, or adjust fields as needed.
To add a new text box manually, click "Text Field" in the toolbar, then draw the box on the page. Right-click the box and select "Properties" to set options like whether the field is required, what kind of text it accepts (numbers only, for example), and what the default text should be. When you save the file, readers can open it in Adobe Reader or most PDF viewers and type into the boxes you created. Adobe Acrobat Pro costs about $180 per year as a standalone product, or it comes included with Adobe Creative Cloud subscriptions. A free trial lasts seven days. This is the best choice if you create forms regularly or need precise control over how the form works, but it is not worth the cost for a single text box.
Adding a text box in LibreOffice Draw (free, desktop software)
read LibreOffice from LibreOffice.org — it is free and works on Windows, Mac, and Linux. Install it, then open LibreOffice Draw (not Writer). Go to "File" then "Open" and select your PDF. The PDF will open in Draw, where you can edit it directly.
Click the text box tool in the left toolbar (it looks like a capital A in a box), then draw a text box on the page where you want it. Type your text. You can change the font, size, and color using the toolbar at the top. When you are done, go to "File" then "Export as PDF" to save your changes. LibreOffice Draw preserves PDF layout well and is completely free, but the interface is less intuitive than Adobe or the browser tools. Text boxes you create in Draw are not interactive — readers cannot fill them in themselves. If you need interactive forms, LibreOffice is not the right choice.
When to use each tool: a quick comparison
The right tool depends on whether you need interactivity, how often you edit PDFs, and whether you want to work in a browser or on your computer. The table below shows the main differences.
| Tool | Cost | Interactive text boxes | Best for |
|---|---|---|---|
| Google Drive | Free | No | Quick one-off edits, straightforward documents |
| Smallpdf | Free (limited) or paid | No | Keeping PDF layout intact, straightforward text additions |
| Adobe Acrobat Pro | $180/year | Yes | Creating forms readers can fill in, regular PDF work |
| LibreOffice Draw | Free | No | Desktop users who want full control, no cloud upload |
If you only add text boxes once in a while, the free browser tools save you money and time. If you create forms or edit PDFs regularly, Adobe Acrobat Pro's cost spreads across many projects and becomes worthwhile.
The difference between a text box and a form field
A text box is just text you add to a PDF — it sits on the page like any other text. A form field is interactive: readers can click into it, type their own text, and save their answers. Form fields are what you need if you are creating a survey, process, or any document where someone else will fill in blanks.
Most free tools (Google Drive, Smallpdf, LibreOffice) can add text boxes but not form fields. Only Adobe Acrobat Pro and a few specialized form-building tools can create true interactive form fields. If you just need to add text you write yourself, any of the free tools work fine. If you need readers to type their own answers, you need Adobe Acrobat Pro or a form-specific tool.
Frequently Asked Questions
Can I add a text box to a PDF on my phone?
Yes, but the experience is limited. Google Drive works on mobile browsers and lets you add text boxes, though the interface is cramped. Adobe Acrobat Reader has a mobile app with basic annotation tools, but creating interactive form fields on a phone is not practical. For anything beyond adding a quick note, use a desktop or laptop.
What if I want to add a text box but keep the PDF read-only?
You cannot truly keep a PDF read-only and editable at the same time — those are opposite goals. You can password-protect a PDF so readers cannot save changes, but they can still add temporary annotations. If you want readers to see text you added but not change anything, add the text box and then lock the file in Adobe Acrobat or use a tool that exports to a flat, non-editable PDF.
Do I need to convert my PDF to Word first?
No. Converting to Word and back adds extra steps and often breaks the layout. It is faster to edit the PDF directly using one of the tools above. The only reason to convert is if you need to do heavy rewriting or restructuring, which is beyond what a text box does.
Can readers fill in text boxes I create in Google Drive or Smallpdf?
No. Text boxes you add in Google Drive or Smallpdf are static — they are just text on the page. Readers cannot click into them and type. If you need readers to fill in their own answers, use Adobe Acrobat Pro to create form fields instead.
What happens to my text box if I open the PDF in a different program?
Text boxes usually stay in place and remain readable, but formatting (font, size, color) may change depending on what program opens the file. Form fields created in Adobe Acrobat work in most PDF readers, but interactive features may not work in older or less common programs. Always test your PDF in the software your readers will actually use.