Share a file without making anyone sign up

Every signup wall between your recipient and your document costs you readers. Here's how to send a file that opens in one click — no account for them, and optionally none for you either.

The slim.to team · · 3 min read

You send someone a 4 MB PDF. They get one of these:

Every one of those is friction between a person and a thing you wanted them to read. And the friction is not evenly distributed — the busiest, most senior recipients are exactly the ones who won't push through it.

The goal is one click to readable content.

The fastest version: no account for anyone

The free link shortener takes a URL or a file and gives you back a short link. No signup, no email, no card.

Pick how long it should live — 1 hour, 24 hours, 7 days, or 30 days — and the link stops working on its own afterwards. That expiry is a feature, not a limitation: a link that self-destructs is the right shape for "here's the thing we discussed" and it means you don't accumulate a trail of forgotten public files.

Good for: sending something once, to someone you may never email again, right now.

When you want an account (yours, not theirs)

Your recipient never needs one either way. An account gets you:

The free plan covers five active links, which is more than enough to find out whether any of that matters to you.

Keeping the recipient's path to one click

A few things that quietly add friction back:

Don't password-protect by reflex. A password is a second step and a second message. Use it when the content genuinely warrants it. When you just want to know who's reading, an email gate or an allowed-domains list does that without the out-of-band password dance.

Prefer formats that render in a browser. A PDF or a hosted page opens instantly and gets page-level analytics. Office documents work — DOCX, PPTX, XLSX and the legacy formats are all accepted — but they're download-and-track only, because reading them means opening another application. If you want the read profile, send a PDF.

Watch the size. Uploads go up to 100 MB. Anything near that is a slow open on a phone on mobile data, which is where a surprising share of first opens happen. Compress the deck.

Check the preview. When the link is pasted into Slack or an email that renders cards, the unfurl is built from the link's own title, description and image. A good preview measurably improves the odds it gets clicked; a broken one looks careless.

What the recipient actually experiences

They click. The document opens in their browser, on their phone or their laptop, with no account, no app, and no download unless they want one. If you've put it on your own domain with your logo, there is nothing about it that reads as third-party software.

Meanwhile you get a notification that it happened, and a record of what they read.

That asymmetry is the whole point: as little friction as possible on their side, as much information as possible on yours.

Where to go next

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