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Adjust single space between lines in your PDFs quickly with Smallpdf and Word. Convert, edit, and save cleanly without losing layout or quality.

Ever wondered about the difference between an editable, fillable, or interactive PDF? Let’s simplify it, so you can always choose the PDF that fits.

Looking for a simple offline PDF editor? When you're on the move or working without the internet, choosing the right tool makes all the difference.

PDFs don’t have to be boring—they can actually be pretty vibrant! We've teamed up with Flipsnack to help you create the perfect interactive PDF!

What’s the difference between PDF/A and PDF/X? Learn the strengths and limitations of these common PDF formats, along with PDF/E, PDF/VT & PDF/UA.

Do you know your PDF types? Here, we break them down—PDF, PDF/A, PDF/E, PDF/X, PDF/UA—and help you find the right PDF format for your needs.

Accessibility is a must. PDFs should be readable by all, including those using screen readers. Here’s all you need to know for accessible PDFs.

Save time and avoid email clutter by embedding PDFs directly into your emails for easy, instant access to important documents without downloading.

Transform your PDFs with OCR! Turn scanned images into searchable text and find what you need in seconds.

Creating a mobile-friendly PDF is simple. Follow these tips to make your PDF easy to read, fill out, and share on any phone screen.

Edit PDFs with Google Drive easily by teaming it up with Smallpdf’s powerful online tools. Here’s the simplest way to get it done, no fuss.

Easily underline text in a PDF document online with Smallpdf. Highlight key points, add emphasis, or mark notes—no downloads needed.

Do a strikethrough in PDF the easy way with Smallpdf. Edit, proofread, or mark up your files online in seconds, with full security and zero installs.

Use our online PDF Annotator to highlight text in a PDF and add annotations for free. Access and use the tool online, anytime—no registration needed.

Align text in a PDF quickly with Smallpdf’s online editor. No signups needed—just upload, edit, and download your perfectly aligned document.

You can! It’s easy and totally intuitive. Whether you need to highlight key points, leave reminders, or make remarks, all it takes is a few clicks.

Can you add comments to a PDF? Yes! Learn how to add notes, annotations, and comment boxes with online and native tools.

Want to create bookmarks and navigate your PDF documents—without Adobe? We’ll show you how to do it for free on Mac and Windows.

Adding notes to a PDF doesn’t have to be a chore. With Smallpdf’s easy-to-use annotator, you can mark up documents in no time and stay organized.

Add a table of contents to PDFs to make navigation a breeze, plus learn how to create a glossary, index, and sections for a polished document.

Want to add input fields to PDFs? It’s quick and easy with tools like Smallpdf or Preview on Mac—no fancy software needed! Here’s how to do it.

Looking to add drop-downs to a PDF but don’t want to spend a fortune on fancy software? We'll show you how to do it without spending a cent.

Easily add checkboxes to PDFs for forms, surveys, or quick checklists for free with Smallpdf—on any device—or with Preview on macOS.

PDFs can be tricky to edit. Here’s how to fix the most common issues in a few easy steps—no IT training needed.