SwiftPDFLab Knowledge Base
Step-by-step guides for every feature in SwiftPDFLab Editor. All tools are 100% free and private.
Getting Started
Learn how to open, edit, and save your first PDF.
How to Annotate PDFs
Highlight, draw, add shapes, callouts, sticky notes, and watermarks.
How to Sign PDFs
Draw, type, or upload your signature and place it on any page.
How to Fill PDF Forms
Complete interactive PDF form fields directly in your browser.
Merge & Split PDFs
Combine multiple PDFs or split a PDF into separate files.
Compress PDFs
Reduce PDF file size while maintaining quality.
Redact PDFs
Permanently black out sensitive content.
Complete Tools Guide
Comprehensive guide to all 25+ tools in SwiftPDFLab Editor.