What is the simplest free way to read a PDF on iPad?

Tap the PDF in Files, Mail, or a message — iPadOS opens it with Quick Look, which renders the file at high quality, supports search, and lets you scroll, zoom, and share. For a more book-like experience with bookmarks and a library view, save the PDF to Apple Books (built-in, free). Both are zero-install and respect file privacy because nothing leaves the device unless you choose to share. So: Quick Look for one-off reads, Apple Books for ongoing reading library.

Which free app handles annotation best?

For pure free annotation (highlight, underline, stylus markup with Apple Pencil, sticky notes, freehand drawing), Xodo and PDF Expert's free tier both do an excellent job. Apple Books does basic highlights and Pencil markup but lacks the layered annotation tools. If you have an Apple Pencil and want pressure-sensitive ink, both Xodo and PDF Expert support it well. Save annotations into the PDF (not as a separate layer) so other readers see them. So: Xodo or PDF Expert (free) for serious annotation; Books for casual highlights.

Can I fill out PDF forms on iPad for free?

Yes — Adobe Acrobat Reader, PDF Expert, and Xodo all support AcroForm form-filling in their free tiers. Tap into a field, type, tab to next field, save. Apple Books supports adding a signature image but does not handle interactive fields the same way. For PDFs designed as fillable forms, any of the three apps above works. For PDFs that are scanned static images (no form fields), you need an annotator that lets you place text on top — Xodo and PDF Expert do this. So: Adobe / PDF Expert / Xodo handle fillable forms; for scanned forms, use the text-overlay tool in the annotator.

What if the file is sensitive and I do not want it uploaded anywhere?

Stick to apps that operate on the local file without cloud sync. Files / Quick Look, Apple Books (with iCloud sync off if you want), and ScoutMyTool in Safari (browser-based, processes in-page) all keep the PDF on your iPad. Adobe Reader and PDF Expert default to syncing through their respective clouds — turn that off if you need local-only. Read each app’s privacy disclosure before processing confidential documents. So: Quick Look + Books are local by default; turn off sync in Adobe/PDF Expert if needed; ScoutMyTool processes in-browser.

Can I merge or split PDFs on iPad without paying?

iPadOS Files app has limited built-in merge (long-press selected PDFs and choose "Create PDF") but no split. For free split, use a browser-based tool like ScoutMyTool’s split/merge in Safari — works on iPad, no install, no upload. Xodo also has merge/split free in its app. PDF Expert offers merge in the free tier and unlocks editing/split in the paid tier. So: built-in iPadOS merge works for simple cases; ScoutMyTool or Xodo for split and more complex merges.

How does ScoutMyTool compare to a native iPad app?

Trade-offs in both directions. Native apps win on offline use, stylus integration depth, and library management — if you read PDFs all day on iPad, install Xodo or PDF Expert. ScoutMyTool wins on no-install (one tab in Safari), broader tool coverage in one place (merge, split, compress, convert, sign, annotate, redact, etc.), and a privacy posture that does not require trusting an app’s sync defaults — files are processed in-page. For occasional or task-specific work, the browser is often the faster path. So: native app for daily reading; ScoutMyTool for occasional tools and privacy-first work.

Are there any "free" apps to actually avoid?

Be careful with free PDF apps that lock basic features (export, sharing) behind a subscription, or that require an account before opening any PDF. Read the App Store reviews and the data-collection disclosure (visible on every App Store page) before installing. Apps that upload files for cloud-based "processing" should be treated as if any file you open will end up on their servers. A genuinely free app should let you open and read a PDF without an account or upload. So: skip the “sign-up to open” apps and the upload-to-process tools for sensitive files.

Best free PDF apps for iPad (2026 review)

By ScoutMyTool Editorial Team · Last updated: 2026-05-23

iPad is one of the better PDF devices out there: big screen, Apple Pencil support, and a healthy market of apps. The catch is that “free” covers a wide range — from genuinely free with no strings to free-to-install-then-pay-to-use. This 2026 review walks the apps worth installing for reading, annotating, filling forms, and light editing, plus the in-browser alternative that needs no install at all. The goal is to help you pick based on what you actually want to do, not on the loudest marketing.

The shortlist

App	Strengths	Trade-offs
Apple Books	Built-in, no install; clean reading; iCloud sync	Limited annotation; no form-filling beyond signature
Files (Quick Look)	Built-in preview; works with any storage provider	View-only by default; cannot edit/merge
PDF Expert (free tier)	Best-in-class reader, annotation, fillable forms	Editing locked behind subscription
Adobe Acrobat Reader	Cross-device sync, fillable forms, signatures	Account required; cloud sync default-on
Xodo	Free annotation/fill/sign, no subscription	Ads in some flows; cloud sync optional
ScoutMyTool (browser)	No install; all PDF tools; files stay on-device	Needs a browser tab; offline support limited
GoodReader	Power-user file manager + annotator (one-time fee)	Not actually free — paid app

How to pick

Read-only? Quick Look in Files, or Apple Books for a library view.
Annotation with Apple Pencil? Xodo or PDF Expert free tier.
Form filling? Adobe Reader, PDF Expert, or Xodo — all free for AcroForm fields.
Merge / split / convert occasionally? ScoutMyTool in Safari — no install, no upload.
Sensitive files? Quick Look, Books with sync off, or browser tools that process in-page.
Daily power-user? Pay for PDF Expert or GoodReader — they earn their keep.
Avoid: apps that require sign-up to open a file, or that upload to "process" without saying so.

Best PDF viewers (cross-platform).
Best free PDF tools 2026: broader landscape.
PDF reader for Android.
E-sign on iPhone: signing on iOS.
Sign PDF: signature workflows.
All ScoutMyTool PDF tools (works in iPad Safari).

FAQ

What is the simplest free way to read a PDF on iPad?: Tap the PDF in Files, Mail, or a message — iPadOS opens it with Quick Look, which renders the file at high quality, supports search, and lets you scroll, zoom, and share. For a more book-like experience with bookmarks and a library view, save the PDF to Apple Books (built-in, free). Both are zero-install and respect file privacy because nothing leaves the device unless you choose to share. So: Quick Look for one-off reads, Apple Books for ongoing reading library.
Which free app handles annotation best?: For pure free annotation (highlight, underline, stylus markup with Apple Pencil, sticky notes, freehand drawing), Xodo and PDF Expert's free tier both do an excellent job. Apple Books does basic highlights and Pencil markup but lacks the layered annotation tools. If you have an Apple Pencil and want pressure-sensitive ink, both Xodo and PDF Expert support it well. Save annotations into the PDF (not as a separate layer) so other readers see them. So: Xodo or PDF Expert (free) for serious annotation; Books for casual highlights.
Can I fill out PDF forms on iPad for free?: Yes — Adobe Acrobat Reader, PDF Expert, and Xodo all support AcroForm form-filling in their free tiers. Tap into a field, type, tab to next field, save. Apple Books supports adding a signature image but does not handle interactive fields the same way. For PDFs designed as fillable forms, any of the three apps above works. For PDFs that are scanned static images (no form fields), you need an annotator that lets you place text on top — Xodo and PDF Expert do this. So: Adobe / PDF Expert / Xodo handle fillable forms; for scanned forms, use the text-overlay tool in the annotator.
What if the file is sensitive and I do not want it uploaded anywhere?: Stick to apps that operate on the local file without cloud sync. Files / Quick Look, Apple Books (with iCloud sync off if you want), and ScoutMyTool in Safari (browser-based, processes in-page) all keep the PDF on your iPad. Adobe Reader and PDF Expert default to syncing through their respective clouds — turn that off if you need local-only. Read each app’s privacy disclosure before processing confidential documents. So: Quick Look + Books are local by default; turn off sync in Adobe/PDF Expert if needed; ScoutMyTool processes in-browser.
Can I merge or split PDFs on iPad without paying?: iPadOS Files app has limited built-in merge (long-press selected PDFs and choose "Create PDF") but no split. For free split, use a browser-based tool like ScoutMyTool’s split/merge in Safari — works on iPad, no install, no upload. Xodo also has merge/split free in its app. PDF Expert offers merge in the free tier and unlocks editing/split in the paid tier. So: built-in iPadOS merge works for simple cases; ScoutMyTool or Xodo for split and more complex merges.
How does ScoutMyTool compare to a native iPad app?: Trade-offs in both directions. Native apps win on offline use, stylus integration depth, and library management — if you read PDFs all day on iPad, install Xodo or PDF Expert. ScoutMyTool wins on no-install (one tab in Safari), broader tool coverage in one place (merge, split, compress, convert, sign, annotate, redact, etc.), and a privacy posture that does not require trusting an app’s sync defaults — files are processed in-page. For occasional or task-specific work, the browser is often the faster path. So: native app for daily reading; ScoutMyTool for occasional tools and privacy-first work.
Are there any "free" apps to actually avoid?: Be careful with free PDF apps that lock basic features (export, sharing) behind a subscription, or that require an account before opening any PDF. Read the App Store reviews and the data-collection disclosure (visible on every App Store page) before installing. Apps that upload files for cloud-based "processing" should be treated as if any file you open will end up on their servers. A genuinely free app should let you open and read a PDF without an account or upload. So: skip the “sign-up to open” apps and the upload-to-process tools for sensitive files.

Citations

Wikipedia — “IPadOS,” built-in Files and Quick Look behaviour. en.wikipedia.org/wiki/IPadOS
Wikipedia — “Apple Books,” the built-in reader. en.wikipedia.org/wiki/Apple_Books
Wikipedia — “PDF” (forms, annotations, structure). en.wikipedia.org/wiki/PDF

No-install PDF tools, right in Safari

ScoutMyTool runs in your iPad browser — merge, split, compress, fill, sign, redact — and your files never leave the device.

Open PDF tools →