How to Add Text to PDF: Complete Guide (Insert, Edit, Format & Add New Text Boxes)

8 min read
How to Add Text to PDF: Complete Guide (Insert, Edit, Format & Add New Text Boxes)

How to Add Text to PDF: Complete Guide

Adding text to a PDF is one of the most common editing tasks whether you need to fill out a form, add a comment, insert a missing sentence, or create a new PDF from scratch. Unlike word processors, PDFs are not designed for easy text insertion, but several tools make it simple. This guide covers every method to add text to PDFs: using online tools (fastest, no installation), Adobe Acrobat Pro (professional editing), free desktop software (PDF‑XChange Editor), and built‑in viewers (Preview on Mac). You will learn how to insert new text anywhere, edit existing text, add text boxes, change font size and color, and even add text to scanned PDFs using OCR. By the end, you will be able to add text to any PDF like a pro.

Why Add Text to a PDF?

  • Fill out forms: Add your name, address, or answers to PDF forms.
  • Insert missing content: Add a sentence, paragraph, or correction to an existing document.
  • Annotate and comment: Add text boxes for feedback or explanations.
  • Create new PDFs: Build documents from scratch by adding text to blank pages.
  • Edit scanned documents: After OCR, add or replace text in scanned PDFs.

Types of Text Addition Methods

Method Description Best For Preserves Original Layout
Add text as annotation (text box) Floating text box that sits on top of the page. Does not affect existing text flow. Non‑destructive, removable. Comments, labels, filling blank spaces. ✅ Yes (no reflow)
Insert text into existing content (edit mode) Actually inserts characters into the existing text flow. The paragraph reflows. Not all tools support this. Correcting typos, adding missing words. ⚠️ May change layout
Add text to scanned PDF after OCR First OCR to recognize text, then edit or add new text.最适合 scanned documents. Editing scanned books, invoices. ✅ Yes after OCR

Method 1: Add Text to PDF Online (Fastest, No Installation)

Online PDF text editors are ideal for quick tasks on non‑sensitive files. Avoid uploading confidential documents.

Using Our Edit PDF Online Tool:

  1. Go to Edit PDF Online.
  2. Upload your PDF.
  3. Click the Add Text button (T icon) in the toolbar.
  4. Click anywhere on the page where you want to add text. A text box appears.
  5. Type your text. You can:
    • Change font: Select from Arial, Times New Roman, etc.
    • Adjust size: Use the font size dropdown (8pt to 72pt).
    • Change color: Pick from the color palette.
    • Make bold, italic, or underline.
    • Move the text box: Drag it to any position.
    • Resize the box: Drag the corner handles.
  6. To edit existing text (if the PDF has selectable text), click the Edit mode, select the text, and type over it.
  7. Click Download to save the PDF with your added text. Your file is processed in your browser and never uploaded to our servers.

Alternative Free Online Text Addition Tools:

  • Sejda Edit PDF: 50 MB limit, 200 pages, 3 tasks/hour. Supports adding text anywhere, changing fonts and colors.
  • SmallPDF Add Text: Free tier with daily limits, basic text insertion.
  • PDFescape (online): 10 MB, 100 pages – add text boxes, free text, and edit existing text.
  • Xodo (online version): Free, no registration, full text editing and annotation suite.

Privacy warning: Do not upload sensitive PDFs to any online tool. Use offline software for confidential documents.

Method 2: Add Text Using Adobe Acrobat Pro

Adobe Acrobat Pro offers professional text insertion with full control over formatting and text flow.

Add New Text (as annotation or content):

  1. Open the PDF in Adobe Acrobat Pro.
  2. Go to Tools > Edit PDF.
  3. Click Add Text from the toolbar (or right‑click > Add Text).
  4. Click where you want to insert text. A text box appears.
  5. Type your text. Use the Format panel to change font, size, color, alignment, and line spacing.
  6. To edit existing text: Select the text you want to change and type over it. The paragraph reflows automatically.
  7. Save the PDF (File > Save).

Add Text as a Comment (Text Box, Callout):

  1. Open the Comment tool (right panel).
  2. Select Add Text Box or Callout.
  3. Click and drag to draw the box, then type.
  4. These annotations do not affect the original text flow.

Method 3: Add Text Using Free Desktop Software (Offline, Private)

These tools work offline, keep your files private, and are free or have free versions.

PDF‑XChange Editor (Free version, Windows):

  1. Open the PDF in PDF‑XChange Editor.
  2. Click the Add Text icon (T with a plus) in the toolbar, or go to Comment > Typewriter.
  3. Click on the page and start typing. The free version supports basic text boxes.
  4. To edit existing text: Use the Edit Content > Text tool, select text, and type over it.
  5. Format text: Right‑click the text box > Properties to change font, size, color, and alignment.
  6. Save the PDF. The free version adds a small watermark, but your added text remains.

Preview (Built‑in on Mac, Free):

  1. Open the PDF in Preview.
  2. Click the Markup toolbar button (pencil tip inside a circle).
  3. Click the Text Box tool (T in a box).
  4. Click on the page, then type your text.
  5. To format: Click the text box, then use the formatting options (font, size, color, alignment) that appear in the toolbar.
  6. To move: Drag the text box.
  7. Save the PDF (File > Save).
  8. Limitation: Preview cannot edit existing text; it only adds new text boxes as annotations.

LibreOffice Draw (Free, Windows/Mac/Linux):

  1. Open the PDF in LibreOffice Draw (File > Open).
  2. Click Insert > Text Box.
  3. Draw a text box, type your content. Format using the sidebar.
  4. To edit existing text: Double‑click on the text, then edit directly.
  5. Export as PDF: File > Export As > Export as PDF.
  6. Note: Complex layouts may shift; best for simple documents.

Comparison Table: PDF Text Addition Methods

Method Price Add Text Box Edit Existing Text Font Formatting Privacy
Online Editor (DonePDF) Free ✅ Yes ✅ Yes (selectable PDFs) ✅ Yes Files uploaded
Adobe Acrobat Pro ~$15/month ✅ Yes ✅ Yes (full reflow) ✅ Yes (advanced) Local (or cloud)
PDF‑XChange Editor (free) Free (watermark) ✅ Yes ✅ Yes (limited) ✅ Yes Local
Preview (Mac) Free ✅ Yes ❌ No ✅ Yes (basic) Local
LibreOffice Draw Free ✅ Yes ✅ Yes ✅ Yes Local

Step‑by‑Step Workflow: Adding Text to a Scanned PDF

  1. Open the scanned PDF (image‑only).
  2. Run OCR using our OCR PDF tool to convert the image into a selectable text PDF.
  3. Download the OCR‑processed PDF.
  4. Open the new PDF in our online editor or PDF‑XChange Editor.
  5. Now you can:
    • Add new text boxes anywhere.
    • Edit existing recognized text (may have small errors).
    • Correct OCR mistakes by typing over them.
  6. Save the final PDF.

Best Practices for Adding Text to PDFs

  • Match the font: When adding text to an existing document, try to use a similar font and size. Use the “Identify Font” feature in Adobe Acrobat Pro if needed.
  • Use text boxes for non‑destructive edits: If you don’t want to risk altering the layout, add text boxes instead of editing existing text.
  • Align properly: Use the alignment guides in online tools or Acrobat to position text boxes neatly.
  • For forms, use form‑filling tools: Our Edit PDF Online supports typing directly into form fields.
  • Flatten after adding text: If you want to prevent others from moving or deleting your added text, print the PDF to a new PDF (File > Print > Save as PDF).

Common Mistakes When Adding Text to PDFs

  • Using the wrong font: If the viewer doesn’t have the font, it may substitute an ugly default. Use standard fonts like Arial or Times New Roman.
  • Adding text as an image instead of editable text: Some tools only allow you to “stamp” an image of text – not selectable. Always use true text tools.
  • Not saving after adding text: Online tools require “Download”. Desktop requires Save (Ctrl+S).
  • Adding text to a scanned PDF without OCR: You cannot edit or add selectable text to an image PDF. OCR first.
  • Overlapping existing content: Place text boxes in margins or white space to avoid covering important information.

Tools for PDF Management – DonePDF Utilities

  • Edit PDF Online – Add text, edit existing content, text boxes, and annotations
  • OCR PDF – Make scanned PDFs editable so you can add text
  • Add Watermark to PDF – Add text watermarks (e.g., “Confidential”) across all pages
  • Generate PDF – Create a new PDF from scratch and add text
  • Compress PDF – Reduce file size after adding text
  • Protect PDF – Prevent others from editing your added text

Introduction & Basics

Editing & Annotation

Page Management

Security & Signatures

Use Cases

Conclusion – Add Text to PDFs Effortlessly

Adding text to PDFs is a fundamental skill for anyone who works with digital documents. For quick, non‑sensitive tasks, our free Edit PDF Online tool lets you add text boxes anywhere, change fonts and colors, and even edit existing content. For professional document editing with text reflow, Adobe Acrobat Pro is the gold standard. Offline free tools like PDF‑XChange Editor (Windows) and Preview (Mac) are great for private, occasional text additions. Always match fonts, use text boxes for non‑destructive changes, and run OCR before adding text to scanned PDFs. With this guide, you can now add any text to any PDF with confidence.

Frequently Asked Questions

How can I add text to a PDF for free?

You can add text to a PDF for free using these methods:

  1. Online (fastest): Use our Edit PDF Online tool. Upload, click “Add Text”, click anywhere on the page, type your text, format it, and download.
  2. Offline (Windows): PDF‑XChange Editor (free version) – open PDF, click the “Add Text” or “Typewriter” tool, click and type. Saves with watermark.
  3. Offline (Mac): Preview (built‑in) – open PDF, click Markup toolbar, select Text Box tool, click and type. You can move and resize the box.
  4. Offline (cross‑platform): LibreOffice Draw – open PDF, Insert > Text Box, type, then export as PDF.

For sensitive documents, use offline tools. For quick, non‑confidential files, our online tool is fastest and offers the most formatting options.

How do I add text to a PDF without changing the existing content?

To add text without altering the original document, use text boxes (annotations) instead of editing existing text. Text boxes float on top of the page and do not affect text flow. Here’s how:

  • Our online tool: Click “Add Text” and click anywhere – the text box appears as an annotation. You can move it to a margin or white space.
  • Adobe Acrobat Pro: Use the “Add Text Box” in the Comment tool (not Edit PDF). This creates a comment box that doesn’t interfere.
  • PDF‑XChange Editor: Use the “Typewriter” or “Text Box” tool from the Comment menu.
  • Preview (Mac): Use the Text Box tool in Markup toolbar – these are annotations.

This method is perfect for adding notes, filling blank spaces, or placing labels without risking layout changes.

How do I edit existing text in a PDF?

Editing existing text in a PDF requires a tool that can modify the underlying content, not just add annotations. Options:

  • Adobe Acrobat Pro (best): Open PDF > Tools > Edit PDF. Select any text and type over it. Paragraphs reflow automatically. You can also change font, size, and color.
  • Our online tool (Edit PDF Online): If the PDF has selectable text, click the “Edit” mode, select the text, and type over it. Works for minor corrections.
  • PDF‑XChange Editor (free): Use Edit Content > Text tool, select text, and edit. May not reflow perfectly.
  • LibreOffice Draw (free): Double‑click on text to edit, but complex layouts may break.

Note: Scanned PDFs (images) cannot be edited until you run OCR. Use our OCR PDF tool first.

How do I change the font, size, or color of text I add to a PDF?

Formatting options depend on the tool:

  • Our online tool (Edit PDF Online): After adding a text box, select the text or click inside the box. Use the toolbar to choose font (Arial, Times, etc.), size (8‑72pt), color, bold, italic, underline. Changes apply immediately.
  • Adobe Acrobat Pro: In Edit PDF mode, select the text box or the text itself. The Format panel opens with font, size, color, alignment, and line spacing options.
  • PDF‑XChange Editor: Right‑click the text box > Properties. In the Appearance tab, you can change font, size, fill color, and border.
  • Preview (Mac): After adding a text box, click the “A” icon in the Markup toolbar to change font, size, and color. Options are limited.

Pro tip: For consistency, match the font of the original document. Use standard fonts (Arial, Times New Roman) for compatibility.

Can I add text to a scanned PDF (image PDF)?

Yes, but you need to make the PDF editable first. Scanned PDFs are images without selectable text. Follow these steps:

  1. Run OCR (Optical Character Recognition): Use our OCR PDF tool. Upload the scanned PDF, and the tool will create a new PDF with a hidden text layer.
  2. Download the OCR‑processed PDF.
  3. Add or edit text: Open the new PDF in our online editor or any text‑editing tool. You can now add text boxes or edit the recognized text.

Alternatively, if you only need to add a small annotation (like a signature or note), you can use Preview’s text box or PDF‑XChange’s typewriter tool even on a scanned PDF – the text will sit on top of the image. But for true text insertion that aligns with existing content, OCR is required.

How do I add text to a PDF on my phone (Android/iPhone)?

You can add text to PDFs on mobile using free apps:

  • Adobe Acrobat Reader (free, iOS/Android): Open PDF, tap the edit icon (pencil), then tap “Add Text”. Tap where you want to insert text, type, and format using the toolbar. Save.
  • Xodo PDF (free, iOS/Android): Open PDF, tap the edit mode, choose “Text” (or “Add Text”), tap and type. Xodo offers more formatting options than Adobe Reader.
  • Microsoft Edge (mobile): Open PDF in Edge, tap the pen icon, then the text icon. Tap to add a text box. Works for basic notes.
  • Our online tool via mobile browser: Edit PDF Online works on any smartphone browser – upload, add text, download. Less convenient but no app needed.

Mobile text addition is great for quick edits or filling forms, but for precise formatting or large documents, use a desktop computer.

How do I add a text box that I can move and resize after typing?

Most PDF tools allow you to move and resize text boxes after creation:

  • Our online tool: Click on the text box to select it. Drag from the corners to resize. Drag from the center to move. You can also rotate if the tool supports it.
  • Adobe Acrobat Pro: In Edit PDF mode, click on the text box. Handles appear – drag corners to resize, drag the box to move. Use the Properties panel for exact dimensions.
  • PDF‑XChange Editor: Click on the text box (using the Select tool). Drag handles to resize, or drag the box to reposition. Right‑click > Properties for precise control.
  • Preview (Mac): Click the text box. Blue handles appear – drag to resize. Drag the box to move. No rotation.

Remember: Text boxes added as annotations (not as edited content) are always movable and resizable. In Acrobat Pro, ensure you are using “Add Text” from the Comment tool (not Edit PDF) for maximum flexibility.

Will compressing a PDF remove or alter the text I added?

No, compressing a PDF using Compress PDF will not remove or alter any text you have added, whether it’s new text boxes or edited content. Compression reduces file size by optimizing images, removing duplicate resources, and re‑encoding data losslessly (or with minimal loss for images). Your text remains fully readable and editable.

Important: If you used a whiteout or shape to hide text (not delete it), compression will preserve that shape as well. Only true text deletion or redaction removes text permanently.

For best results: Add all your text first, then compress the final PDF to reduce file size for email or web sharing.

How do I add text to a PDF without Adobe Acrobat?

You have several Adobe‑free options:

  • Online: DonePDF Edit PDF Online – completely free, no registration, supports text boxes, font formatting, and editing existing text on selectable PDFs.
  • Windows offline: PDF‑XChange Editor (free version) – “Typewriter” or “Add Text” tool. Saves with a small watermark but functional.
  • Mac offline: Preview – Text Box tool in Markup toolbar. Limited formatting but free and built‑in.
  • Cross‑platform: LibreOffice Draw – full text editing and insertion, then export to PDF. May alter complex layouts.
  • Google Drive (workaround): Upload PDF to Google Drive, open with Google Docs (converts to editable format), add text, then download as PDF. Formatting may shift.

For most users, our online tool offers the best balance of features and ease of use without requiring Adobe.

Related articles