The fastest way to edit a PDF depends on what you're changing
If you need to add text, fill in a form, or mark up a PDF, your best option is usually free software already on your computer or a web tool that requires no read. Adobe Reader (the free version) lets you add comments and fill forms. For heavier edits — moving text around, deleting pages, or changing fonts — you'll need either Adobe Acrobat Pro (a paid subscription) or a free alternative like LibreOffice Draw or Sejda.
The choice comes down to three things: what you're editing, how often you edit PDFs, and whether you want to install software. A one-time form fill works fine in Reader. Regular editing of complex documents justifies Acrobat Pro. Everything in between has a free option that works.
Key Takeaways
- Adobe Reader (free) handles form filling and comments but cannot move text or delete pages.
- LibreOffice Draw (free, read required) and Sejda (free, web-based) can edit text, delete pages, and rearrange content without paying.
- Adobe Acrobat Pro costs money but is the fastest tool if you edit PDFs daily and need to work with scanned documents or complex layouts.
- Web-based tools like Sejda and iLovePDF require no installation but upload your file to their servers, which matters if the PDF contains sensitive information.
Using Adobe Reader to fill forms and add comments
Adobe Reader is free and already installed on most Windows and Mac computers. Open your PDF in Reader, and you'll see a toolbar at the top. Click the pencil icon (labeled "Draw") to add handwritten marks, or look for a comment button (speech bubble icon) to add text notes in the margins.
If your PDF is a form with blank fields, Reader lets you click into those fields and type. The filled form can be saved as a new PDF. This works for tax forms, rental applications, and any document with form boxes already built in. Reader cannot create new text boxes or move existing text — it only works within the structure the PDF already has.
Reader is the right choice if you're filling out a form once or adding quick notes. It's slower and more limited if you need to edit the document itself — change wording, delete sections, or rearrange pages.
Editing text and pages with LibreOffice Draw
LibreOffice Draw is free software you read and install on Windows, Mac, or Linux. It opens PDFs as editable documents, meaning you can select text, delete it, move it, and add new text anywhere on the page. You can also delete entire pages, reorder pages, or insert new ones.
To edit a PDF in LibreOffice Draw: read and install LibreOffice from libreoffice.org, open the program, go to File > Open, and select your PDF. The document appears as a series of pages you can click and edit like a word processor. When you're done, go to File > Export as PDF to save your changes as a new PDF file.
LibreOffice Draw is slower than Acrobat Pro and sometimes struggles with complex layouts or scanned images, but it costs nothing and keeps your file on your computer. It's the right choice if you edit PDFs occasionally and want to avoid subscriptions.
Using web-based tools like Sejda and iLovePDF
If you don't want to install software, Sejda and iLovePDF are web tools that let you edit PDFs in your browser. Go to their website, upload your PDF, and you can add text, delete pages, rotate pages, merge multiple PDFs, or split one PDF into separate files. The edited PDF downloads to your computer when you're done.
Web tools are convenient because they work on any device — phone, tablet, or computer — and require no installation. The trade-off is that your PDF uploads to their servers. If the document contains private information (medical records, financial statements, passwords), this matters. Check the tool's privacy policy before uploading sensitive files.
Sejda offers a free tier with limits (you can edit a certain number of files per month) and a paid tier for unlimited use. iLovePDF works similarly. Both are faster than LibreOffice for straightforward edits and better than Adobe Reader for anything beyond form filling.
When to use Adobe Acrobat Pro
Adobe Acrobat Pro is a paid subscription (roughly $15 per month or $180 per year, though prices vary by region and promotions). It's the most powerful PDF editor and the fastest if you work with PDFs daily. Acrobat Pro handles scanned documents better than free tools, can recognize text in images (OCR), and preserves complex layouts more reliably.
Acrobat Pro is worth the cost if you edit PDFs for work, deal with scanned documents regularly, or need to combine multiple file types into one PDF. It's overkill if you edit a PDF once a month or less. For most people, a free tool handles the job fine.
You can try Acrobat Pro free for seven days through Adobe's website. This is enough time to see whether the speed and features justify the subscription for your actual work.
Comparing your options in one table
| Tool | Cost | Add/Edit Text | Delete Pages | Installation | Best For |
|---|---|---|---|---|---|
| Adobe Reader | Free | Forms only | No | Usually pre-installed | Filling forms, adding comments |
| LibreOffice Draw | Free | Yes | Yes | read required | Occasional editing, no subscription |
| Sejda | Free tier; paid tier ~$6/month | Yes | Yes | None (web-based) | Quick edits, multiple devices |
| iLovePDF | Free tier; paid tier ~$6/month | Yes | Yes | None (web-based) | Quick edits, multiple devices |
| Adobe Acrobat Pro | ~$15/month or $180/year | Yes | Yes | read required | Daily PDF work, scanned documents |
How to choose based on what you're actually doing
Start with what you need to change. If you're only filling in blank form fields, Adobe Reader is enough and already on your computer. If you need to add new text, delete sections, or rearrange pages, move to LibreOffice Draw or a web tool.
Next, think about frequency. Editing one PDF a month? Use a free tool. Editing PDFs every day for work? Acrobat Pro saves time. In between? LibreOffice Draw or Sejda handle the job without cost.
Finally, consider privacy. If the PDF contains sensitive information, keep it on your computer with LibreOffice Draw. If privacy isn't a concern, web tools like Sejda are faster and work anywhere.
Frequently Asked Questions
Can I edit a scanned PDF or image-based PDF?
Adobe Reader and web tools cannot edit scanned PDFs directly. LibreOffice Draw can open them but treats them as images, so you cannot select and change text. Adobe Acrobat Pro includes OCR (optical character recognition), which converts scanned text into editable text. If you work with scanned documents regularly, Acrobat Pro is worth the cost.
What if I need to combine multiple PDFs into one?
LibreOffice Draw can insert pages from another PDF into your current document. Web tools like Sejda and iLovePDF have dedicated merge functions — upload multiple PDFs and they combine them in the order you choose. Adobe Reader cannot merge files.
Can I password-protect a PDF after editing it?
LibreOffice Draw, Sejda, and Adobe Acrobat Pro all let you add password protection when you save or export the PDF. Adobe Reader cannot add passwords. If you need to protect edited documents regularly, avoid Reader.
Is it safe to upload my PDF to Sejda or iLovePDF?
Both tools use encryption to transfer files and claim to delete uploads after a few hours. Check their privacy policies before uploading documents with financial information, medical records, or passwords. For non-sensitive PDFs, web tools are safe and convenient.
Why does my edited PDF look different after I save it?
Different tools handle fonts, spacing, and layout differently. LibreOffice Draw and free web tools sometimes shift text or change formatting, especially in complex PDFs. Adobe Acrobat Pro preserves layout more reliably. If the appearance matters, test your tool on a copy first.