files.co vs Smallpdf: the free, private alternative explained

Smallpdf is one of the most recognizable PDF brands online, and for good reason. It started in 2013 out of Zurich, it has a clean interface, and it covers most of the things people need to do with a PDF. If you’ve ever searched “compress PDF” or “merge PDF,” you’ve probably landed on it.

So this isn’t a hit piece. Smallpdf is a real product that a lot of people are happy with. But it works in a way that matters for your files, and there’s a free option that works differently. Let me lay both out so you can pick.

How each one works

This is the part everything else hangs on.

Smallpdf is a cloud service. When you drop a file in, it travels from your device to Smallpdf’s servers, the work happens there, and the result comes back to you. Their policy says uploaded files are deleted within an hour, and traffic is encrypted with TLS on the way. During processing, though, the document sits decrypted on infrastructure they control. That’s just how server-side tools function.

files.co runs the whole PDF engine inside your browser. You pick a file, the engine that already loaded with the page does the work on your own machine, and you save the result. The file never gets uploaded, because there’s no server step in the middle. We can’t delete a document we never received, and we can’t log what we never saw.

You don’t have to take my word for it. Open files.co, press F12 to open DevTools, go to the Network tab, and run a task. You’ll see the page assets load. You won’t see your PDF leave. Turn off your Wi-Fi afterward and it still works.

Privacy

Smallpdf’s deletion policy is fine as policies go, and Switzerland has serious data law. But a deletion timer is a promise. You’re trusting that the file gets removed on schedule, that logs don’t keep metadata around, that no sub-processor or backup holds a copy. For a meme you’re cropping, who cares. For a signed contract, a payslip, a passport scan, or a medical form, that trust is the whole question.

files.co removes the question. The file stays on your device from start to finish. There’s nothing on a server to leak, subpoena, or forget to delete. One is privacy by promise. The other is privacy because the file simply never went anywhere.

Price and limits

Here’s where the day-to-day difference shows up.

Smallpdf’s free web tier gives you 2 documents per day. After that you hit a wall, with ads and feature gates along the way. To lift the cap you move to Pro, which runs roughly $9 to $12 a month and adds unlimited tasks, bigger files, no ads, plus OCR and e-signing. There’s also a Team plan with seats, billing controls, and audit logs for companies.

If you process PDFs all day, Pro is reasonable and the polish is real. But two documents is a low ceiling for a free tool. Merge a file, compress another, and you’re done until tomorrow.

files.co has no daily cap and no paid tier. All 20 tools are free, with no usage limit and a 50 MB ceiling per file. There’s no account, no sign-up, no upsell waiting after your third click. We don’t charge because there’s nothing to host. Your browser does the work, so there’s no server bill to pass on to you.

The tools

Smallpdf’s catalog is broad and well built. Merge, split, compress, sign, protect, and unlock are all there on the free side. Some things are Pro-only, though: OCR sits behind the paywall, and so do watermarking, page numbers, and cropping. A few options like running headers and footers aren’t in the lineup at all.

files.co puts all 20 tools on the table for free, including the ones Smallpdf charges for. OCR, watermark, page numbers, and crop are right there with no plan to upgrade to. The catalog is a bit narrower than some giant cloud suites, and that’s a fair trade for keeping everything local and free. If you need to merge a PDF or run OCR without paying or signing in, that gap closes in your favor.

One honest caveat: anything that genuinely needs a server can’t run client-side, so files.co won’t try to fake it. What’s there runs on your machine, full stop.

When to pick each one

Pick Smallpdf if you want a single polished suite with deep integrations, you’re already paying for Pro, and you specifically want their e-sign workflow or Dropbox and Google Drive hooks. The UX is smooth and the brand is established. For a team that lives inside one PDF tool all day, it earns its keep.

Pick files.co if you don’t want your file uploaded anywhere, you’d rather not hit a 2-per-day limit, and you don’t want an account or a subscription. If you handle anything sensitive, the browser-only approach means the file never leaves your control in the first place.

The honest bottom line

Smallpdf is a strong product. If the cloud model and the price work for you, use it without a second thought. The two things files.co does that it can’t are simple: your file never gets uploaded, and you never hit a paywall or a daily cap. Open DevTools and you can confirm the first one in under a minute. That’s the difference, with no spin on it.