Opening a PDF and choosing the right editing tool

Adobe Acrobat has two main ways to edit a PDF: the Edit PDF tool for changing text and images directly on the page, and the Comment tools for marking up a document without altering the original. Which one you use depends on whether you own the PDF or are reviewing someone else's work. If you own it and need to change what's actually written, use Edit PDF. If you're reviewing it or need to leave notes for someone else to read, use Comments.

Open your PDF in Adobe Acrobat (the full desktop process, not the free Reader). Go to File > Open and select your PDF. Once it loads, look at the right panel — you'll see a list of tools. Click Edit PDF to start making direct changes to text and images on the page.

Key Takeaways

  • The Edit PDF tool in Adobe Acrobat lets you change text, move text boxes, delete content, and replace images directly on the page.
  • When you click Edit PDF, Acrobat detects text blocks automatically, but you may need to manually select and edit text that was scanned or poorly formatted.
  • To add new text, use the Add Text tool from the Edit PDF menu rather than typing directly into existing text boxes.
  • Changes you make in Acrobat are permanent once you save the file, so save a backup copy before making major edits.
  • If you need to review a document without changing it, use the Comment tools instead of Edit PDF to leave notes and markup.

Editing text in an existing PDF

Once Edit PDF is active, click on any text in the document. Acrobat will highlight the text box that contains it. You can now select the text inside that box and type over it, delete it, or rearrange it. Click once to place your cursor, then drag to select the words you want to change. Type your replacement text and it will overwrite what was there.

If the text box itself is too small for your new text, you can resize it by clicking and dragging the corner handles. If you need to move the entire text box to a different location on the page, click the box border (not the text inside) and drag it where you want it. Be aware that if the PDF was created from a scanned image rather than a digital document, Acrobat may not recognize the text as editable — in that case, you'll need to use the Add Text tool instead to type new content over the scanned image.

Adding new text to a PDF

To add text that wasn't in the original document, click Add Text from the Edit PDF toolbar on the right. Your cursor will change to a crosshair. Click and drag on the page to create a new text box, then type your content. The text will appear in a default font and size, which you can change by selecting the text and using the formatting options in the right panel.

New text boxes you create are independent of the original document layout, so you have full control over where they sit and how large they are. If you need to match the font, size, or color of existing text in the document, select your new text and use the formatting menu to adjust it. Remember that any text you add will be visible when the PDF is opened or printed, so double-check spelling and placement before saving.

Replacing or removing images

To delete an image, click on it once to select it, then press the Delete key. The image will be removed and the space it occupied will be blank. If you want to replace an image with a different one, delete the original image first, then click Add Image from the Edit PDF toolbar. Select the new image file from your computer and click where you want to place it on the page.

When you add a new image, you can resize it by dragging the corner handles and move it by clicking and dragging the image itself. Keep in mind that images you add to a PDF are embedded in the file, so the file size may increase. If you're working with a PDF that has many images, save it and check the file size to make sure it's still manageable for email or storage.

Saving your edited PDF

Once you've made your changes, save the file by pressing Ctrl+S (Windows) or Command+S (Mac), or go to File > Save. If you want to keep the original PDF unchanged and save your edits as a separate file, use File > Save As instead. This lets you give the edited version a new name or save it to a different folder.

Acrobat will save your changes directly into the PDF file. There's no separate "save as PDF" step — the file remains a PDF with all your edits included. If you later open the file and want to make more changes, the Edit PDF tool will still be available. Be aware that once you save, you cannot undo changes from a previous session, so if you think you might want to revert to the original, keep a backup copy before you start editing.

Using Comments instead of direct editing

If you're reviewing a PDF that someone else created and you don't want to change the actual content, use the Comment tools instead of Edit PDF. Click the Comment button in the right panel to access highlighting, sticky notes, and drawing tools. These let you mark up the document without altering the original text or images.

Highlight text by selecting it and clicking the highlight button, or use the sticky note tool to add comments in the margins. You can also draw shapes or freehand marks on the page. All comments are stored separately from the document content, so the original PDF remains unchanged. When you save a PDF with comments, the comments are saved with it, and anyone who opens the file will see your markup and notes.

Troubleshooting common editing problems

If you click on text but nothing happens, the PDF may be a scanned image or a protected file. For scanned PDFs, use the Add Text tool to type over the image instead of trying to edit the original text. For protected PDFs, Acrobat will show a message saying the document is restricted — you'll need the password to unlock it for editing, or you may need to contact the person who created it.

If your text looks misaligned or the font doesn't match the rest of the document, check the font selection in the formatting panel on the right. You can change the font, size, and color of any text you add or edit. If the PDF layout shifts or text overlaps after you make changes, try clicking elsewhere on the page to deselect the text box, then review how it looks. Sometimes the display updates once you deselect and reselect the element.

Frequently Asked Questions

Can I edit a PDF without Adobe Acrobat?

Yes, there are other tools that can edit PDFs, but Adobe Acrobat is the most reliable for complex edits. Free alternatives like Preview (on Mac) or online PDF editors can handle basic text and image changes, but they often have limitations with formatting or file size. If you edit frequently or work with complex documents, Acrobat is worth the cost.

What's the difference between Adobe Acrobat and Adobe Reader?

Adobe Reader is free and lets you view and comment on PDFs, but it cannot edit text or images directly. Adobe Acrobat (the paid version) includes the Edit PDF tool and all the features needed to change document content. If you only need to read PDFs and leave comments, Reader is sufficient. If you need to modify the actual text and images, you need Acrobat.

Will my edits look professional if I change fonts and colors?

Yes, as long as you match the existing document style. Before you add new text, look at the font, size, and color of the original content and try to match it. Use the formatting options in the right panel to adjust your text. If the document has a specific style guide or template, follow that to keep everything consistent.

Can I undo changes after I save the file?

No — once you save a PDF in Acrobat, the changes are permanent. You cannot undo edits from a previous session. If you think you might want to revert to the original, save a copy of the unedited PDF before you start making changes. This way you'll always have the original to go back to.

What should I do if the PDF won't let me edit it?

The PDF may be password-protected or created in a way that prevents editing. Check if Acrobat shows a message about restrictions. If it does, you'll need the password to unlock it. If there's no password protection but editing still doesn't work, the file may be a scanned image — in that case, use the Add Text tool to type over the image instead of editing the original text.