Guide

Free alternatives to Adobe Acrobat, honestly compared

“Best free PDF editor” is an unanswerable question, because about eight different jobs are hiding inside it and the best free tool is a different one for each. So here they are by job — including the several where the answer isn’t this program.

Pick by job

What are you actually trying to do?

Change the words that are already in the document
A true in-place editor. On Windows, free: Emifyn PDF Studio or the free build of PDF-XChange Editor. This is the job almost nothing free does well, and the reason this program exists. How to do it →
Read PDFs, quickly, all day
SumatraPDF. Tiny, instant, open source, and it opens a 400-page document faster than most programs open a menu. It does not edit, and does not pretend to. For reading alone it is hard to beat.
Merge, split, rotate or reorder pages
PDFsam Basic or PDF Arranger — both free and open source, both very good at exactly this. PDF24 Creator does it too, alongside a lot else. Emifyn does all of it as well, if you would rather have one program.
Fill in and sign a form
Almost anything. Adobe’s own free Acrobat Reader, Xodo, your browser, Emifyn. If the form shows a grey “open in Adobe Reader” page it is an XFA form and Adobe Reader really is the answer. Which kind have you got? →
Convert a PDF to Word or Excel
A converter, not an editor. The browser services are genuinely good at this and Microsoft Word will open a PDF directly. Expect the layout to change — that is inherent, not a flaw in the tool.
Turn a scan into searchable text
OCR software. OCRmyPDF and Tesseract are free and excellent; OneNote and most scanner software include OCR. Emifyn does not do OCR yet, and saying so is more use to you than not.
Remove information so it can’t be recovered
A real redaction tool. Not a black rectangle — the text survives underneath it and can be copied straight out. This matters enough to have its own page: how to redact a PDF properly →
Do a bit of everything, occasionally, on any machine
A browser toolkit — Smallpdf, iLovePDF, Sejda, PDF Candy, Stirling PDF. Nothing to install and they cover a lot of ground. Your file goes to their server, so keep that for documents where it does not matter.

The four kinds of free, and what each costs you

Browser tools

Smallpdf, iLovePDF, Sejda, PDF Candy, DocHub and their many relatives. Nothing to install, work on any machine, and the free tiers cover ordinary use — though most limit how many jobs you can run in an hour, or how large a file can be, and those limits move around often enough that quoting them here would only mislead you.

The real cost is not the limits. It is that the document leaves your computer. For a train timetable that is nothing. For a contract, a payslip, a medical letter or anything with a client’s name in it, it is a decision that deserves half a second of thought rather than a default. The reputable services delete files after a few hours and say so in their privacy policies; the question is whether you want to have to check.

Free readers with a paid editor behind them

Adobe Acrobat Reader, Foxit Reader, Nitro, Wondershare PDFelement and so on. Excellent at reading, annotating and form filling, all free. Editing the text is the thing they sell, so at the point you need it you meet a subscription or a trial that watermarks the output.

There is nothing underhand about this — it is the business model, stated openly — but it is worth knowing before you invest an afternoon in one. Adobe Acrobat Reader in particular is genuinely the best free tool for a couple of jobs, XFA forms especially, and it is worth having installed for them.

Office suites

LibreOffice Draw opens a PDF and lets you retype the words, free and offline. It is a real option and for simple documents it works. Be clear about what it does: it imports the page as a collection of separate drawing objects and writes an entirely new PDF when you export. Straightforward single-column pages usually come through intact. Columns, tables, tight line spacing and unusual fonts frequently shift, and the shift is not always obvious on your screen.

Use it when you are going to rewrite most of the document anyway. Avoid it when you need to change nine words on a letterhead and have everything else stay put.

Free desktop editors

The smallest group, and the one that does the job people usually mean. PDF-XChange Editor has been around a long time and its free build is unusually capable — some tools are reserved for licence holders, so check their feature list against what you need. PDF24 Creator is free, offline and covers a wide range of tasks. Emifyn PDF Studio is this one: free, open source, offline, built around in-place text editing first and everything else after.

What “free” is actually hiding, usually

Worth knowing the shapes, since they are all described as free:

  • Free to try. A trial that stamps a watermark on anything you save, or stops after fourteen days.
  • Free up to a point. Three tasks an hour, or twenty pages, or one file a day.
  • Free if you sign up. An account, an email address and a mailing list as the price.
  • Free with the interesting part removed. Everything works except the one feature you came for.
  • Free and open source. The source is published, anyone can check what it does, and nobody can withdraw it later. PDFsam, SumatraPDF, LibreOffice, OCRmyPDF, QPDF and this program are all in this category.

None of these is dishonest. They are just different things and it saves time to know which you are downloading.

Where Emifyn PDF Studio sits

Plainly: it is a one-person project that was built to do the hard thing first. Editing the text already in a document, using the document’s own font, is the whole reason it exists — everything else on the feature list came afterwards, because a PDF editor that cannot edit a PDF is a viewer with extra steps.

It is free, it is AGPL-3.0, the source is published, there is no account, no watermark, no page limit and nothing is uploaded anywhere, because there is no server to upload to. It is Windows-only today. It does not do OCR yet. The list of what it does not do is deliberately as long as it needs to be, and is on the site rather than hidden.

If the job on your desk is one of the other seven above, use the tool that is best at it. If it is the first one, this is what it was made for.

Try it against your own file

The honest test is whether it can edit the document you’re actually stuck on. Free, Windows 10 and 11, uninstalls cleanly.

The one job nothing else free does well.

Free, open source, offline. No account, no watermark, no page limit.