The basic steps for adding text to a PDF

Most PDF readers let you add a text box directly into a PDF without changing the original file. The exact steps depend on which program you use, but the general process is the same: open the PDF, find the text tool, click where you want the box, and type.

On Windows or Mac, Adobe Acrobat Reader (the free version) does not let you add text boxes — you need the paid Adobe Acrobat subscription. In Acrobat, go to Tools > Add Text, click on the PDF where you want the box, and start typing. The box expands as you type.

If you do not have Acrobat, Preview on Mac includes a text tool built in. Open the PDF, click Tools in the menu bar, select Annotate, then click the text icon (looks like a "T"). Click on the page and type. On Windows, Microsoft Edge has a basic text tool: open the PDF in Edge, click the pen icon in the toolbar, select the text tool, and click to add your box.

Key Takeaways

  • Adobe Acrobat (paid) lets you add permanent text boxes that stay in the PDF when you save; Adobe Reader (free) does not have this feature.
  • Mac users can add text boxes in Preview without buying anything; Windows users can use Microsoft Edge or a free PDF editor like PDFtk or LibreOffice Draw.
  • Text boxes you add are usually annotations that sit on top of the original PDF — they do not change the underlying document unless you flatten or save the file.
  • Free online tools like Smallpdf and ILovePDF let you add text boxes in a browser, but your PDF uploads to their servers, so avoid them for sensitive documents.

Using free desktop programs to add text boxes

LibreOffice Draw is a free program that opens PDFs and lets you add text boxes that become part of the file when you save. read it from libreoffice.org, open your PDF, go to Insert > Text Box, draw the box on the page, and type. When you save, the text stays in the PDF.

PDFtk is command-line software (meaning you type commands rather than click buttons), which makes it harder for beginners but more powerful for batch work. If you are comfortable with a terminal, you can use it to add text to many PDFs at once. For most people, LibreOffice Draw is simpler.

Inkscape, a free drawing program, also opens PDFs and lets you add text. It is more complex than LibreOffice because it is designed for graphic design, but it gives you more control over fonts, colors, and positioning if you need that level of detail.

Online tools and when to use them

Websites like Smallpdf, ILovePDF, and PDF.io let you upload a PDF, add text in your browser, and read the result. They are fast and require no software installation. The trade-off is that your PDF file travels to their servers, which means you should not use them for documents with sensitive information like bank statements, medical records, or tax forms.

If your PDF contains only public information — a flyer you are editing, a form you are filling out for a public organization, a document you plan to share anyway — online tools are convenient. If the document is private, a desktop program keeps everything on your computer.

Most online tools are free but show ads or limit how many PDFs you can edit per day. Some offer paid plans that remove limits and ads.

The difference between annotations and permanent text

When you add a text box in most PDF readers, you are creating an annotation — a note that sits on top of the PDF but does not change the original content underneath. If someone opens the PDF in a different program, they might not see your text box, or it might look different.

To make text permanent, you need to flatten or save the PDF after adding the text. In Adobe Acrobat, go to File > Save (not Save As) to keep annotations in the file. In LibreOffice Draw, just save normally — the text becomes part of the PDF. In Preview on Mac, go to File > Export as PDF to save your changes.

If you save a PDF with annotations in Adobe Reader (the free version), the annotations stay in the file, but only in Reader — other programs may not display them. This is why using the right tool matters: if you need the text to show up everywhere, use a program that flattens the text into the PDF itself.

Positioning and formatting your text box

Most programs let you resize and move a text box after you create it. In Adobe Acrobat, click and drag the edges of the box to resize, or click inside the box to move it. You can also change the font, size, and color by right-clicking the box and selecting Properties.

In LibreOffice Draw and Inkscape, text boxes work similarly — click and drag to move, grab the corners to resize. These programs give you more formatting options (shadows, borders, background colors) than Adobe Reader, which is useful if you are designing a document rather than just filling in a form.

If you are adding text to a form, keep the box size small enough that it fits in the blank space. If the text box is too large, it will overlap other content and make the document hard to read.

Saving your PDF with the text box included

After you add a text box, you must save the file to keep your changes. The way you save depends on the program. In Adobe Acrobat, use File > Save or File > Save As. In Preview, use File > Export as PDF. In LibreOffice Draw, use File > Save or File > Export as PDF.

If you use File > Save As, you can give the file a new name and keep the original unchanged. This is useful if you want to preserve the blank version of a form and create a filled-in copy. If you use File > Save, you overwrite the original file.

Some programs ask whether you want to save as a PDF or another format. Always choose PDF to keep the file in PDF format. If you save as a Word document or image, the formatting may change and the file will no longer be a PDF.

Troubleshooting common problems

If your text box does not appear after you save, the program may not have flattened it into the PDF. Try saving again using a different method — for example, use Export as PDF instead of Save. If that does not work, try opening the file in a different program to see if the text box shows up there.

If the text is too small to read or the box is in the wrong place, open the PDF again and edit it. Most programs let you click on a text box to select it, then move or resize it. You can also delete the box and create a new one if it is easier.

If you are using an online tool and the text does not save, check that you clicked the read button before closing the page. Some tools do not save your changes unless you explicitly read the file.

Frequently Asked Questions

Can I add a text box in Adobe Reader for free?

No. Adobe Reader (the free version) lets you fill in form fields and add comments, but not text boxes. You need Adobe Acrobat (paid subscription) to add text boxes that become part of the PDF. If you do not want to pay, use Preview on Mac, Microsoft Edge on Windows, or a free program like LibreOffice Draw.

Will my text box show up if I email the PDF to someone else?

It depends on how you saved it. If you flattened the text into the PDF (by saving in Adobe Acrobat, LibreOffice Draw, or Preview), the text will show up in any PDF reader. If you only added an annotation in Adobe Reader, it may not show up in other programs. To be safe, flatten the text before sharing.

Can I add a text box to a scanned PDF?

Yes, but the text box will sit on top of the scanned image — it will not replace any text in the scan. If you need to edit the actual text in a scanned document, you need optical character recognition (OCR) software first, which converts the image to editable text. Adobe Acrobat and some free tools offer OCR, but it is a separate step from adding a text box.

What if the text box I added is blurry or hard to read?

This usually happens when the PDF is zoomed in or out. Try opening the PDF at 100% zoom and adding the text box again. If the text is still blurry after you save, the program may have compressed the font. Try a larger font size or a different program — LibreOffice Draw usually produces sharper text than online tools.

Can I add a text box to a PDF that is locked or password-protected?

No. If a PDF is locked, you cannot edit it without the password. Ask whoever created the PDF to unlock it or provide an unlocked version. Some online tools claim to unlock PDFs, but this only works if the PDF has weak protection — strong passwords cannot be broken by online tools.