Preview app on Mac provides a fast, secure way to inspect files before you open them in a dedicated editor. Mastering the Preview app features helps you annotate, measure, and share documents without installing extra software.
This guide covers core workflows, built-in tools, and pro tips so you can rely on Preview for everyday tasks on macOS.
| Feature | What It Does | Shortcut | Best For |
|---|---|---|---|
| Quick Look Space Bar | Preview files without opening them | Space bar | Quick file inspection |
| Markup Toolbar | Draw, text, shapes, and signatures | Command + M | Annotations and notes |
| Form Filling | Complete PDF forms digitally | Shift + Command + F | Fast PDF workflows |
| Signature Capture | Add handwritten signatures | Trackpad or camera | Secure signing |
| OCR Text Recognition | Make scanned documents searchable | Right-click → Recognize Text | Extract text from images |
Introduction to Preview app on Mac
Preview is the default Mac app for opening and interacting with PDFs, images, and certain document formats. It balances simplicity with professional features, saving time across common tasks.
By learning Preview app features thoroughly, you can reduce app switching, protect document clarity, and collaborate more efficiently with colleagues and clients.
Navigating the Preview interface
The toolbar at the top and the sidebar on the left give you instant access to pages, search, and thumbnails. Customize the toolbar by Control-clicking it and choosing Customize Toolbar.
Use the viewer controls to zoom, fit width, or scroll continuously. The combination of keyboard shortcuts and intuitive layout makes Preview ideal for fast document reviews.
Annotating and marking up documents
Using the markup toolbar
The markup toolbar offers pen, highlighter, shape, line, text, and signature tools. Choose a tool, adjust color and thickness, then draw or type directly on the page.
Adding notes and comments
Hover over a region and click the speech bubble to attach a comment. Comments appear in the sidebar and can be resolved once reviewed, keeping feedback organized.
Managing and filling PDF forms
Completing form fields
Open a PDF form, click a field to type, and use the formatting bar to adjust text. Tab between fields or use keyboard shortcuts to move quickly through multi-step forms.
Saving signed and completed forms
After filling fields and adding a signature, choose File → Save or export as a new PDF to preserve changes. This workflow keeps sensitive data local and avoids third‑party sites.
OCR and text extraction
Preview can recognize text in scanned documents through Optical Character Recognition. Once recognized, you can search, copy, and edit the content as if it were natively digital.
For best results, use high‑contrast scans and verify recognized text for accuracy. Combine this feature with spell check and export options for clean, reusable documents.
Everyday use and best practices
To integrate Preview smoothly into daily work, focus on consistent shortcuts and organized markup habits.
- Use Space bar for fast Quick Look reviews before opening files.
- Save standardized markup tools in the toolbar for quick access.
- Create reusable signatures for frequent approval scenarios.
- Recognize text on scanned pages to enable search and archiving.
- Export signed or completed forms to a dedicated folder for records.
FAQ
Reader questions
How do I add a digital signature in Preview?
Choose Tools → Annotate → Signature, then either draw on your trackpad, use an existing image, or capture with your camera to place the signed line.
Can I fill and sign PDF forms without Adobe Acrobat?
Yes, Preview supports form filling and digital signing, allowing you to complete and save PDF forms directly on Mac without third‑party apps.
What should I do if recognized text from a scan looks incorrect?
Re-run OCR by right‑clicking the image and choosing Recognize Text, ensuring the document language is set correctly in System Preferences → Keyboard → Text.
How can I quickly share a marked‑up preview with a colleague?
Use File → Share to send the annotated PDF via Messages, Mail, or AirDrop, preserving all comments and drawings in a single file.