What's the Best App to Read PDFs in 2026

Adobe Acrobat Reader remains the default answer for many people, and the reason is practical rather than exciting. Files made in other tools tend to open here exactly as intended, including forms, embedded fonts and digital signatures. That reliability matters when the document is a contract, a tax form or a school assignment with a strict deadline.

The free version handles reading, highlighting, commenting and form filling without a trial clock. Paid Acrobat plans add full text editing, conversion and advanced signing, but most readers will never need them. The main trade-off is weight, since the app is larger and slower to launch than the lightest viewers on this list. If compatibility matters more than speed, start here and only upgrade when a specific paid feature becomes necessary.

Foxit PDF Reader suits readers who open PDFs all day and dislike waiting for an app to load. The tabbed layout makes it easy to keep several documents open at once, and the ribbon layout will feel familiar to anyone who uses office software. Highlighting, comments and form filling are all included in the free reader.

Foxit also offers cloud connections and business deployment tools, which helps teams that need the same reader on many machines. The catch is familiar in this category, since true text editing, redaction and advanced conversion belong to the paid Foxit PDF Editor. For reading and markup alone, the free reader is a strong, fast alternative to Adobe, and it stays out of the way while you work.

PDF Expert is built for Apple devices, and that focus shows in small details that add up over a long reading session. Pages scroll smoothly, annotations feel natural with a finger or Apple Pencil, and page management tools such as reordering and merging are close at hand. Students and professionals who mark up lecture notes or contracts on an iPad often find it the most pleasant reader available.

The free version covers basic reading, while the paid plan adds editing, OCR and conversion tools. That split means casual readers can try it at no cost, but anyone who wants the full toolset should budget for the yearly price. Windows and Android users should look elsewhere, since this app does not try to serve every platform. Within the Apple world, though, it is our pick for comfort and polish.

Xodo is a good fit for readers who move between a phone, a tablet and a browser during the day. The free app covers opening, annotating and sharing PDFs, and files stay in step across devices when you sign in. That makes it easy to start a document on a commute and finish the notes at a desk.

The interface stays simple, which helps new users, but it also means power features are thinner than in paid desktop editors. OCR and some advanced tools belong to paid Xodo plans, so heavy scanning work may need another app. For everyday reading, highlighting and commenting, the free tier is generous. If your reading happens mostly on mobile, Xodo deserves a place near the top of your shortlist.

UPDF tries to be the one PDF app for every device you own, and it comes closer than most rivals. The reader itself is clean and fast, with annotation tools that are easy to reach. Beyond reading, paid plans add text and image editing, page organisation, conversion and form tools, so a document rarely needs a second app.

The free version is useful for trying the layout and basic tools, but the full value appears after upgrading. Buyers should read the plan page carefully, since AI features and some extras are sold separately from the main plan. That said, readers who want editing on a phone as well as a computer will appreciate the consistent design. Check the current price on the vendor site before committing, since offers change.

PDFgear stands out because its core tools cost nothing, not just for a trial period. You can read, annotate, edit text, convert files and compress documents without a subscription, which is rare in this category. That makes it an easy recommendation for students, job seekers and anyone who needs a capable PDF tool on a tight budget.

The trade-off is depth rather than daily usability. Large teams that need admin controls, redaction workflows or enterprise support will find Adobe and Foxit stronger. Individual readers, though, are unlikely to miss those extras. PDFgear also runs on Windows, Mac, iOS and Android, so a single free app can cover a whole household. Start here if price is the first filter and paid features are a later concern.

SumatraPDF is the app for readers who value speed above everything else. It opens in a blink, even on older Windows machines, and it uses very little memory while running. Beyond PDFs, it also opens ebook and comic formats, which makes it handy for a mixed reading library. The interface is plain, with no clutter around the page itself.

That simplicity is also the limit. Annotation tools are basic, and editing, forms and signing are not the point of this app. Readers who need to mark up documents heavily should pair it with another tool or pick a different app from this list. For pure reading, though, especially on a modest laptop, SumatraPDF is hard to beat. It is free and open source, with no account or subscription to manage.

Smallpdf is best thought of as a toolbox in the browser rather than a traditional reader. You can open the site, drop in a file, and compress, merge, split or convert it in a couple of minutes. That workflow suits occasional tasks, such as shrinking a PDF before emailing it or turning a scan into a smaller file.

The free tier covers basic jobs, but daily limits apply, and regular users will hit them quickly. Paid plans remove those limits and add desktop and mobile apps. Readers who open PDFs every day will prefer a dedicated app from this list, while occasional users may never need more than the web tools. Keep in mind that web tools need an internet connection, so they are not the right choice for offline reading on a plane.