Tablets handle most common PDF editing tasks well, and in some cases — annotating, signing, drawing — they're actually more capable than a laptop because of the touchscreen and stylus support. The limitations show up mainly for deep text editing and complex operations, which are better suited to a desktop environment anyway.
What Tablets Do Well With PDFs
Annotation is where tablets genuinely excel over laptops. A stylus on an iPad Pro or Samsung Galaxy Tab feels close to writing on paper — natural, precise, and fast. Handwritten annotations, freeform drawings, signature capture, and highlighting all work better with a stylus and touchscreen than with a mouse. For reviewing and marking up documents, a tablet is often the superior tool.
Signing PDFs, filling out forms, adding text boxes, and compressing or merging files through browser-based tools all work well on a tablet browser. The iPad in particular runs a full desktop-class Safari browser, and browser-based PDF tools work identically on iPad and desktop.
iPad: The Most Capable Tablet for PDF Work
iPad with Apple Pencil offers the best tablet PDF experience available. The built-in Files app opens PDFs with full Markup annotation support. Apple's PDF engine in Preview (accessible through Files) supports highlighting, freehand drawing, signature capture, and text annotation. For dedicated PDF work, PDF Expert and Notability are popular iPad apps with more advanced editing features including text layer editing.
The iPad also runs a full desktop Safari browser, which means any browser-based PDF Editor works exactly as it would on a Mac. WukongPDF's tools open in iPad Safari without any modification — upload, edit, download, the same workflow as on a desktop.
Android Tablets
Android tablets vary significantly in their PDF capabilities depending on the manufacturer and Android version. Samsung Galaxy tablets with the S Pen have strong PDF annotation features through Samsung Notes and the built-in PDF viewer. Stock Android tablets without a dedicated stylus are more limited for annotation but handle browser-based PDF tools well.
Adobe Acrobat Reader for Android provides a consistent PDF experience across Android devices: viewing, commenting, filling forms, and basic signing. For more advanced editing, Xodo PDF Reader is a capable free Android app. For operations that need a web tool, Chrome on Android handles browser-based PDF tools well on most modern Android tablets.
What's Harder to Do on a Tablet
Precise text editing — clicking into body text and rewriting specific words or paragraphs — is more cumbersome on a tablet than a laptop. The touch keyboard works for form field input and short additions, but sustained typing for substantial text edits is slow without a physical keyboard.
File management between apps is also slightly more complex on tablets. On a laptop, downloading a PDF from a browser tool and opening it in a desktop app is a two-second operation. On a tablet, you may need to navigate through the Files app, select the right storage location, and explicitly share to the right app. It works, but it's a few more steps than on a desktop.
Adding a Keyboard Changes the Equation
A Bluetooth or dock keyboard turns a tablet into a significantly more capable PDF editing environment. With a keyboard, text editing feels much closer to the laptop experience. The iPad with Magic Keyboard or Smart Keyboard Folio, for example, handles most PDF editing tasks that don't require a large screen or specific desktop software — the stylus for annotations, the keyboard for typing, and a browser tab for any tool that isn't covered by an installed app.