Before you print
How big should it be?
Rule of thumb: printed width ≥ scanning distance ÷ 10. Pick the surface above and the studio sizes the code for you, then checks the printed module size against what a press can actually hold.
Questions people actually ask
Either works. Type @yourname or paste the full profile URL — we build the correct link for each platform (instagram.com/you, x.com/you, and so on) automatically.
The single-profile version is baked into the code, so it cannot change. The multi-link page is hosted, so the code stays scannable — but the set of links is fixed in the code too, so reprint if your profiles change.
Free forever, no signup, no watermark — UseQR is an open-source public good. The code is generated in your browser, and the link page carries no ads or tracking.
Instagram, X / Twitter, LinkedIn, YouTube, TikTok, GitHub, Facebook, plus a plain website link for anything else — a portfolio, a Linktree, a blog.
Want the detail? How social hub QR codes work — the payload format, what scanners do with it, and where it breaks.