How to Edit PDFs in Adobe Acrobat: Text, Images & Pages

By Michael Peters · Published March 17, 2026 · Last updated March 24, 2026 · 5 min read

← Back to Blog

What Editing a PDF Actually Means

PDF editing is frequently misunderstood. A PDF is not a word processor document — it is a fixed-layout format where text, images, and graphics are positioned precisely on each page. Editing a PDF means modifying that existing fixed content in place, which is technically quite different from editing the original source document in Word, InDesign, or Excel.

Adobe Acrobat Pro provides genuine in-place editing capabilities for text and images, but the degree to which a PDF can be edited depends heavily on how it was created. A PDF generated from a well-structured Word document with embedded fonts is far more editable than one produced by scanning a paper original, which contains only image data with no underlying text at all. For a deeper look at modifying existing PDF files more broadly, see our guide on modifying PDF files.

You can also edit and mark up PDFs online for free using Mapsoft's PDF Hub — no installation required.

The Edit PDF Toolbar

PDF editing in Acrobat is accessed via Tools > Edit PDF. This opens the Edit PDF toolbar at the top of the window and activates the editing mode. In this mode, text blocks and image objects are highlighted with blue bounding boxes, indicating they are selectable and editable.

The toolbar provides tools for editing text and images, adding new text, inserting links, adding headers and footers, adding watermarks, and cropping pages. The right-hand panel provides formatting options for selected text (font, size, colour, alignment).

Editing Text

Click a text block to select it. Acrobat treats text in PDFs as independent text boxes rather than a continuous flowing document. You can click within a block and edit it much like a text editor — insert characters, delete words, or change formatting on selected text.

Automatic font matching: When you type new text or change existing text, Acrobat attempts to match the font of the surrounding text. If the font is embedded in the PDF, Acrobat uses it. If the font is not available, Acrobat substitutes a similar font, which may produce slight visual differences.

Text reflow: Adding or deleting text causes it to reflow within its text box, but the text box does not automatically expand to accommodate more content — text may overflow its container. For significant text additions, the text box may need to be resized manually by dragging its handles.

Scanned PDFs: If a PDF was created by scanning a paper document, the pages contain images, not editable text. To edit a scanned PDF, you must first run OCR (Optical Character Recognition) via Tools > Scan & OCR > Recognise Text. After OCR, Acrobat adds a hidden text layer over the page image, making the document searchable and enabling limited text editing.

Editing Images

In Edit PDF mode, clicking an image selects it. You can then:

• Move the image by dragging it to a new position on the page.
• Resize it by dragging the corner or edge handles (hold Shift to maintain the aspect ratio).
• Replace it by right-clicking and choosing Replace Image, then browsing to a new image file.
• Delete it by pressing the Delete key after selecting it.
• Edit in external application by right-clicking and choosing Edit Using to open the image in Photoshop or another registered editor, make changes, save, and have Acrobat update the PDF.

Adding and Deleting Pages

Page-level changes — inserting, deleting, reordering, or extracting pages — are handled in the Organize Pages panel (Tools > Organize Pages) rather than the Edit PDF toolbar. From here you can insert pages from other files, delete individual pages, drag thumbnails to reorder them, or extract a range of pages into a new document.

Editing In Place vs. Exporting to Word

For substantial text revisions, Acrobat offers an export route: File > Export To > Microsoft Word > Word Document. This converts the PDF back to an editable .docx file, which you can then edit in Word and re-export to PDF. The quality of the round-trip depends on the complexity of the original document — simple, single-column text with standard formatting converts well; complex multi-column layouts, tables, and heavy graphic design typically do not survive the conversion cleanly.

Limitations of PDF Editing

PDF editing in Acrobat is best suited to minor corrections — fixing a typo, updating a date, swapping out a logo image, or adjusting a line of text. It is not designed for substantial layout changes. Key limitations include:

• Multi-column layouts: Text boxes in multi-column documents are independent. There is no automatic text flow between columns; adding text to one column will not push overflow content into the next.
• Complex typography: Decorative fonts, tightly kerned text, or text following a path are difficult to edit without disturbing the visual design.
• Embedded objects: Charts, diagrams, and embedded objects from other applications are typically stored as images in the PDF and cannot be edited as live objects.
• Security restrictions: If the document has permission-based security applied that disallows editing, you cannot modify it without first removing the restrictions (which requires the owner password).

When to Go Back to the Source File

For anything beyond minor corrections, editing the original source document and regenerating the PDF is nearly always the better approach. It preserves the full fidelity of the layout, ensures fonts and styles are applied consistently, and avoids the cumulative degradation that can occur when a PDF is edited multiple times. If the source file is available — whether a Word document, InDesign file, or CAD drawing — the effort of making the change at source and re-exporting is usually less than trying to force significant edits into the PDF itself.

While Acrobat handles text and image edits, many common PDF modifications are better served by specialised tools. Mapsoft offers a range of Acrobat plugins for tasks such as automating bookmarks, stamping and watermarking, redacting sensitive content, and applying security settings across multiple documents at once.

Editing Forms, Annotations, and Layers

Beyond text and images, three other categories of PDF content show up regularly in editing workflows: form fields, annotations, and optional content groups (layers). Each has its own toolset in Acrobat that’s separate from the Edit PDF mode covered above.

Editing Form Fields

Form fields live in the Prepare Form tool (Tools > Prepare Form), not the Edit PDF tool. Acrobat detects existing form fields automatically when you enter Prepare Form mode; you can then modify them, add new ones, change tab order, set validation, attach JavaScript actions, and configure submission behaviour. Five common form-editing tasks:

• Renaming a field. Right-click the field, choose Properties, edit the Name. Note that two fields with the same name in the same document are treated as linked — entering a value in one populates both.
• Changing field type. A text field can’t be converted directly to a checkbox; you have to delete the old field and create the new one.
• Adding calculated fields. Use the Calculate tab in Field Properties to write a JavaScript expression that derives the field’s value from other fields. Powerful but easy to break — test thoroughly.
• Setting tab order. Tab order defaults to the field-creation order, which is rarely correct. From the Prepare Form panel, choose "More > Set Tab Order" and select either row order, column order, or structure order, or set it manually.
• Resetting form data. Add a button with the "Reset a form" action to let users clear their entries.

Editing Annotations and Comments

Annotations (sticky notes, highlights, drawing markup, attached files) are a separate object class from the underlying document content. The Comment tool (Tools > Comment) lets you add, edit, reply to, and delete annotations without touching the document body. Annotations carry author, timestamp, and reply-thread metadata, which matters for review workflows where multiple reviewers comment on the same document. The Comments List panel gives a flat sortable view of every annotation in the document — useful for working through a long review systematically.

Three things that surprise new Acrobat users:

• Annotations don’t print by default. Print options control whether comments are included; the default is "Document only", which excludes them. Toggle to "Document and Markups" to print with comments.
• Annotations can be flattened. Tools > Print Production > Flatten Layers (or similar in newer Acrobat) merges annotations permanently into the document body, after which they can’t be removed. Useful for finalising review artefacts; destructive otherwise.
• Comments can be summarised to a separate PDF. Comments > Summarize Comments produces a printable comment summary alongside the document — the right output for handing review feedback back to the author.

Editing Layers (Optional Content Groups)

PDFs created from CAD drawings, multi-language source files, or complex InDesign layouts often contain layers (formally called Optional Content Groups in the PDF specification). The Layers panel (View > Show/Hide > Navigation Panes > Layers) lets you toggle layer visibility, change layer ordering, and merge or flatten layers. Acrobat’s direct layer-editing capability is limited — you can show, hide, and reorder, but not edit the content within a layer beyond what Edit PDF supports for any object. For substantial layer-based editing, going back to the source document (CAD, InDesign) is almost always the right answer.

Acrobat vs Free PDF Editors: Honest Comparison

Acrobat Pro’s subscription cost (around £15–20/month) makes the free-or-cheaper alternatives perpetually tempting. The honest assessment of how the major options stack up:

The honest production calculus: if you edit PDFs more than once a week, the time you spend working around a free tool’s limitations exceeds Acrobat Pro’s subscription cost. If you edit PDFs occasionally and they’re not sensitive, macOS Preview (Mac) or PDF-XChange Editor free tier (Windows) covers the vast majority of casual cases. The middle ground — "I edit PDFs regularly but can’t justify Acrobat" — is usually best served by Foxit at roughly half the cost. Free online editors should be avoided entirely for anything sensitive, regulated, or covered by an NDA: the convenience isn’t worth the data-handling risk.