How to Edit a PDF: All Your Options Explained

Why editing PDFs is complicated

PDF was not designed for editing. It was designed for presentation — to create a fixed, consistent representation of a document that looks identical on any device. As a result, the internal structure of a PDF is very different from a Word document. Text is stored with precise position coordinates rather than as a flowing document. Paragraphs don't automatically reflow when you add a word. Fonts must be available (or embedded) for any editing tool to maintain accurate appearance.

This architecture is why "editing a PDF" actually covers a wide range of different operations — from simple annotations that sit on top of the document, to extracting the content and rebuilding it in a different format. Understanding which type of edit you actually need is the first step to choosing the right tool.

Types of PDF edits — and why they're different

Annotations (notes, highlights, comments)

Adding annotations means placing content on top of the PDF without modifying the underlying document. Highlights, sticky notes, strikethroughs, freehand drawings, and comments are all annotations. They are stored as a separate layer and can be added or removed without touching the original content. This is the easiest type of PDF modification and is supported by many free tools, including most PDF viewers.

Form filling

Many PDFs contain interactive form fields — boxes, checkboxes, dropdowns — that are designed to be filled in electronically. Filling these in is not editing the PDF; the form fields are purpose-built for this interaction. This is supported natively by most PDF viewers including Adobe Reader (free), Edge, Safari, and Preview on macOS. You do not need any special software to fill in a PDF form.

Minor text editing

Changing a word or number within the existing text of a PDF. This is technically possible but difficult, because any editing tool needs to match the exact font, size, and positioning of the original text. If the font is embedded in the PDF, the tool can use it. If not, there may be visible discrepancies. Minor text edits also do not reflow surrounding text — if you add a sentence, the rest of the paragraph does not move to accommodate it.

Page manipulation

Reordering, removing, rotating, or adding pages — without changing the content of any individual page. This is actually quite straightforward for software to implement because the pages are treated as separate objects. Many free tools support this type of operation.

Substantial content editing

Rewriting paragraphs, changing the document structure, reformatting text, changing fonts — this is the hardest type of PDF editing. The format simply was not designed for it. For any substantial content editing, the practical approach is to convert the PDF to Word first, make your changes, then convert back to PDF. Direct PDF editing tools that claim to support this often produce poor results with layout changes and font issues.

Option 1: Use your built-in PDF viewer (free, works for annotations and forms)

Before reaching for any external tool, check what you already have. Modern operating systems include PDF viewers with annotation capabilities:

macOS and iOS — Preview: Full annotation support including highlight, underline, strikethrough, notes, shapes, freehand drawing, and text boxes. Also supports filling in PDF forms. Open the PDF in Preview, then look for the markup toolbar (View → Show Markup Toolbar, or the pencil icon in the toolbar). Preview can also add signatures: Tools → Annotate → Signature.

Windows — Microsoft Edge: The built-in Edge browser doubles as a PDF viewer with annotation tools: highlight (in three colours), text notes, freehand drawing, and an erase tool. Right-click a PDF and open with Edge. The annotation toolbar appears at the top. Edge also supports filling in PDF forms.

All platforms — Adobe Reader (free download): Adobe's free PDF viewer supports annotations, form filling, and commenting. It does not support editing the actual text content — that requires Acrobat Pro (paid). But for review, annotation, and form workflows, Adobe Reader is comprehensive and handles even complex PDFs reliably.

For annotations, signatures, and form filling, there is no need to pay for anything. Your existing tools handle these cases.

Option 2: Convert to Word, edit, then convert back (free, best for text editing)

For any situation where you need to change the actual text content of a PDF — update a contract clause, revise a report, correct errors — the most practical approach for most users is:

Convert the PDF to a Word document using a PDF to Word converter
Edit the Word document normally in Microsoft Word, Google Docs, or LibreOffice
Export the edited document back as a PDF using File → Export → PDF or Print to PDF

This workflow is free using our PDF to Word converter for text-based PDFs. The conversion quality depends on how the PDF was created — PDFs exported from Word or other document software convert well, with text, headings, and basic formatting preserved. PDFs that are scanned (images of pages) require OCR and convert less accurately.

The main trade-off is that the converted Word document may not be a pixel-perfect match of the original PDF. Tables, columns, and complex layouts sometimes need adjustment after conversion. But for documents where you need to change the content — not just the appearance — this workflow gives you the full power of a word processor.

Option 3: Adobe Acrobat Pro (paid, most capable)

Adobe Acrobat Pro is the professional standard for direct PDF editing. It supports editing text within the PDF, changing fonts and formatting, moving and resizing images, adding and removing pages, filling forms, adding and certifying digital signatures, redacting (permanently removing) content, and creating interactive forms from scratch.

Acrobat Pro costs approximately $19.99/month as a standalone subscription, or is included in the Adobe Creative Cloud All Apps plan. For occasional use, the price is difficult to justify. For professionals who work with PDFs daily, it is the most capable tool available and avoids the round-trip through Word for every edit.

One important distinction: Adobe Reader is free and is primarily a viewer. Adobe Acrobat Pro is the paid editor. Many people confuse the two — only Acrobat Pro (not Reader) supports direct text editing and content modification.

Option 4: LibreOffice Draw (free, capable for direct editing)

LibreOffice is a free, open-source office suite, and its Draw application can open PDF files directly for editing. This approach treats the PDF as a collection of positioned objects — text boxes, images, shapes — which you can move, resize, and edit independently.

LibreOffice Draw is more capable than most free alternatives for direct text editing because it gives you access to the actual positioned content. However, complex PDFs with multi-column layouts or many embedded graphics can open with formatting issues, and text reflow still does not behave like a word processor.

To edit a PDF in LibreOffice Draw: download and install LibreOffice, open the application, then File → Open and select your PDF file. The PDF will open in Draw where individual elements can be selected and edited. When done, File → Export as PDF to save the result.

LibreOffice Draw is the best free option for direct PDF editing without a server upload. It handles most common editing tasks adequately and is particularly good for forms, certificates, and documents where you need to change specific values without reflowing text.

Option 5: Google Docs (free, easiest for text extraction)

Google Docs can open PDF files and convert them to editable Google Docs documents. Right-click a PDF in Google Drive and select "Open with Google Docs." Google will perform an OCR-based conversion, turning the PDF into an editable document. This works on both text-based and scanned PDFs.

The conversion quality is variable — simple documents with standard formatting convert well, but complex layouts with columns, tables, and mixed content often come out with jumbled formatting. The approach works best for text-heavy documents with minimal layout complexity. After editing, you can download the result as a .docx file and then export to PDF, or download directly as PDF from Google Docs.

The privacy consideration here is significant: uploading to Google Drive means Google processes your document. For routine documents this is fine, but be aware that Google's terms allow content analysis for their services. Do not use this method for sensitive or confidential documents.

Option 6: Dedicated online PDF editors

There are several established online PDF editing services that offer annotation, form filling, text editing, and page manipulation through a web interface. Smallpdf, ILovePDF, PDF24, and PDFescape are among the most widely used.

These services upload your file to their servers for processing, which raises the privacy considerations discussed in our PDF privacy guide. For non-sensitive documents, they work well for quick edits without installing any software. For sensitive documents, stick to browser-based, server-free tools or local software.

The feature sets vary by service. Most free tiers support basic annotations and form filling. Text editing, page reordering, and advanced features are typically paid features or limited to a small number of operations per day.

Choosing the right option for your situation

Need to highlight or add comments → Use your built-in viewer (Preview, Edge, Adobe Reader). Free and instant.
Need to fill in a form → Use your built-in viewer. All modern PDF viewers support this.
Need to add a signature → Preview on macOS, Adobe Reader's fill and sign feature, or any annotation tool with a signature option.
Need to change a word or number → Convert to Word, edit, export back as PDF. Or use LibreOffice Draw for direct editing without format conversion.
Need to rewrite sections or restructure the document → Convert to Word is the only practical approach for substantial changes. Direct PDF editing tools are not suitable for major content rewrites.
Need to reorder, rotate, or remove pages → Use our free PDF splitter to extract the pages you want, or a dedicated page manipulation tool.
Need to combine multiple PDFs → Use our free PDF merger.
Work with PDFs professionally and edit them frequently → Adobe Acrobat Pro is the right investment. The workflow benefits quickly outweigh the monthly cost.
Editing a scanned document (image-based PDF) → OCR is required first to extract the text. Convert to Word using OCR software, edit, then re-export. Google Docs can do this for free; Adobe Acrobat Pro has the best-quality OCR built in.

What to do when "editing" is the wrong approach

Sometimes the best answer is not to edit the PDF at all. If you are working with a document that will be edited repeatedly — a template, a form, a regularly updated report — you should not be storing the master copy as a PDF. Keep the source document in Word or whatever application created it, and export as PDF only when you need to share the finished version. Trying to maintain a PDF as your editable master creates unnecessary difficulty at every step.

Similarly, if someone sends you a PDF and asks you to "fill in your details," check whether there is also a Word version available. Many organisations offer both. Working from the Word source is far easier than trying to edit the PDF.

The golden rule for PDF editing: the less you need to edit a PDF, the better your workflow is. The best approach is to edit while the document is still in its source format (Word, InDesign, Google Docs) and generate the PDF as the final step.