Built by HMI engineers, for HMI engineers.

Every project we kicked off, the same fight: "where do we get the symbols from?"

Either we paid for an old desktop-only symbol library that violated ISA-101 from the first screen, or we redrew the same motor / valve / tank from scratch on every new HMI brand. Either path cost real time and produced inconsistent operator displays.

So we built the library we wanted to use ourselves. Web-based, vendor-neutral, ISA-101 / ISA-5.1 native, with a live design editor that lets you adapt to any client style guide in minutes — not weeks.

What we believe

• Operator-first. Calm color, clear hierarchy, situation awareness. ISA-101 isn't a checkbox — it's the design philosophy of every screen we ship.
• Vendor-neutral by default. Standard PNG and SVG you can drop into any HMI / SCADA. Our packs for Weintek, WinCC, FactoryTalk and Ignition are convenience layers — never lock-in.
• Honest pricing. No hidden tiers, no "contact sales" for a basic feature, no per-seat exhaustion. You see the prices on the home page; that's what you pay.
• 14-day refund. No lock-in. If it doesn't fit your project we'll refund you, no friction.

How we work

HMI Library is a small operation. The team behind it has shipped HMIs in wastewater plants, food & beverage lines, biotech production, mining and energy. We know what an operator screen looks like at 3 a.m. when something is going wrong — and we design for that moment, not for the demo screenshot.

The catalog grows weekly. New equipment categories come from real customer requests; we generate them, validate them against the canonical P&ID standards (ISA-5.1, ASME Y32.11, BS 1646), and ship.

Where we ship from

HMI Library S.L. — registered in Spain. EU VAT compliant invoicing (B2B reverse charge supported). All data hosted in the EU (Supabase Frankfurt) with Stripe Ireland for payments. More on data & security →

Get in touch

Email hello@hmilibrary.com for anything — pre-sales questions, custom symbol requests (Enterprise plan), partnership / OEM enquiries, or just to tell us what's broken on the site.

We answer every email personally. No tier-1 support outsourced to a chatbot.