Adding a text box to a PDF lets you insert new text anywhere on a page without altering the original content — useful for filling in forms that aren't interactive, adding notes to a document, or completing fields that were left blank in the original.
How to Add a Text Box Using WukongPDF
Open WukongPDF's PDF Editor in any browser. Upload your PDF and click the Add Text tool in the toolbar. Click anywhere on the page where you want the text to appear — a text box opens at that position. Type your text, then use the formatting options to adjust font, size, color, and alignment. Drag the box to reposition it precisely, then download the updated PDF.
This is the most common way to fill in a non-interactive PDF form — one where the form fields are just visual boxes in the design rather than actual fillable form elements. Place a text box over each field and type the information directly onto the page.
Adding a Text Box in Adobe Acrobat
In Adobe Acrobat Pro, go to Tools > Edit PDF. Click the Add Text tool (the T with a cursor icon) in the secondary toolbar. Click on the page to create a text box and start typing. Use the Format panel on the right to change the font, size, color, and spacing. Click outside the text box when done and save the file.
Acrobat's text editing also works on existing text in native digital PDFs — you can click existing text to edit it in place, not just add new text boxes. This is useful for correcting typos or updating dates without rebuilding the document.
Adding Text Boxes on Mac Using Preview
Open the PDF in Preview and click the Markup toolbar icon (the pencil tip). Select the Text tool (the T icon) from the toolbar. Click on the page to place a text box and start typing. Drag the box to reposition it and use the font controls in the toolbar to adjust appearance. Press Cmd + S to save the changes into the file.
Preview's text tool is basic but works reliably for simple additions. For precise control over font matching or placing multiple text boxes in consistent positions across pages, a dedicated PDF Editor gives more options.
Matching the Original Font and Style
When adding text that needs to blend with existing content — filling in a form, adding a label, or continuing a document's body text — matching the font, size, and color of the surrounding text makes the addition look intentional rather than pasted in. Zoom in on existing text in the PDF to identify the approximate font and size before styling your text box.
Common fonts in business PDFs include Arial, Helvetica, Times New Roman, and Calibri. If the original uses a custom or licensed typeface that you don't have installed, a similar system font at the right size is usually close enough for practical purposes.
Saving Text Box Changes Permanently
Text boxes added as annotations remain editable and moveable until the PDF is flattened. If you want the text to be a permanent, non-editable part of the page — so recipients can't reposition or delete it — flatten the document after adding all your text boxes. This merges everything into one layer. Use the PDF Editor flatten option or the print-to-PDF method in Chrome to produce a flattened version.