Premium all-in-one PDF suites like Nitro Pro ($160), PDF Studio ($90), or Adobe Acrobat Pro DC ($15/month) pack powerful features, but they aren't cheap. The good news: excellent free PDF tools are plentiful. The trade-off? You'll assemble a custom toolkit of specialized apps for optimal results.
Drawing from years of hands-on testing in professional workflows, this guide recommends the most reliable free tools for Windows and Mac across essential tasks: viewing, annotating/editing, signing, merging, and splitting PDFs.
I've used SumatraPDF for years without regret—it's the fastest, lightest PDF viewer available. Even on outdated laptops, it renders files accurately and instantly.
It's strictly a viewer: no editing, signing, or annotations. Bonus: supports EPUB, MOBI, XPS, CBR, and more formats.
Not sold? Explore these other lightweight PDF viewers for Windows: 4 Very Lightweight Alternatives to Adobe Reader. Still using Adobe Reader for PDF documents? It's time to move on to an alternative PDF reader that's lightweight, starts up quickly, while keeping your documents saved. Read more.
Mac's built-in Preview works fine and requires no install, but for superior speed and navigation—especially with large, image-heavy docs—Skim excels. Originally for scientific PDFs, it's now a versatile viewer. Note: the website looks dated, but the app receives regular updates.
Prefer other options? See these top Preview alternatives: 4 Best Free Mac Preview Alternative to Read PDF Files. 4 Best Mac Preview Alternatives for Reading PDF Files. If you are looking for a free preview replacement for your PDF reading habit, here are the best options available. there. Read more.
Among free options, PDF-XChange Editor stands out for true text editing in PDFs. Other edits (lines, shapes, images) require the paid version.
It's free for basics, but paid features—like page insertion/deletion, form edits, headers/footers, and bookmarks—add a permanent watermark on save. License: $43.50. Free perks include text boxes, highlights, sticky notes, and drawing tools.
No fully free Mac tool matches Windows for editing; annotation is the focus. Preview, Apple's default, leads with highlights, text boxes, shapes, and embedded notes (Preview-only).
It handles most forms too, including fields and checkboxes—or use text boxes as a workaround.
Foxit Reader provides five robust signing methods:
Plus validation (ISO compliance check) and timestamping (third-party verified signing time). It's bulkier than some, but ideal for security. Alternatives: 8 Ways to Sign a PDF from Windows, Mac and Mobile Platforms. Read more.
Open-source PDFsam (formerly PDF Split and Merge) is the go-to for combining PDFs. Java-based, it runs on Windows, Mac, Linux, etc.—free for personal use.
Merge any PDFs, select pages, handle bookmarks/outlines (keep, merge, discard), and add a table of contents. Extras: shuffle pages, rotate, extract, split.
No dedicated app needed—modern browsers handle splits easily.
Windows (Edge/Chrome/Firefox):
Mac:
Less flexible than Windows, but sufficient; use PDFsam for complex needs.
Extract images: How to Extract Images from a PDF. Read more. Google Docs handles PDFs beyond viewing. Convert: 6 Ways to Convert PDF to JPG; PDF to Word for Free. Read more.
Creating PDFs? Follow tips to make your PDF files more accessible. Read more.
What's your go-to free PDF tool? Share in the comments!
