Source-available, browser-based intelligent P&ID editor. Drag ISA-5.1-style symbols onto a sheet, connect process and signal lines with proper orthogonal routing, tag instruments with validated ISA tags — and generate real engineering deliverables.
Sign in once and your drawings follow you: every P&ID, HMI screen and cost estimate is saved to your account and opens on whatever machine you use next.
Licensing in one line: free for personal, academic, nonprofit, and government use — commercial use requires a paid license. See COMMERCIAL-LICENSE.md.
▶ Try it now: pid-studio-praharsh.web.app — pick Templates → Sample plant for a demo. 🌐 Project site: coldbari.github.io/IPD-Studio
A real drawing session, sped up: place instruments → draw the loops → color the services → open it in HMI Studio.
▶ Watch the full 2½-minute video
The editor: ISA-5.1 palette with instrument presets and typical loops, multi-sheet drawings, live validation & advisor.
Left: fluid services color whole line runs (water/steam/slurry). Right: the same plant in HMI Studio — tanks, valves, pumps, and displays ready to simulate.
Every browser diagramming tool treats a P&ID as clipart. Every intelligent P&ID tool is a $2,600+/year desktop install. IPD Studio is the missing thing: data behind the drawing, in the browser, free for noncommercial use.
- Tags are parsed and validated against ISA-5.1 letter tables — type
FICand the editor knows it's a Flow Indicating Controller - Loop numbers auto-assign; duplicates are flagged live
- Control loops derive automatically from the tags
- The instrument index and line list are generated from the model, not typed
- The document is versioned open JSON, designed to map onto DEXPI
- HMI Studio — build operator screens from your P&ID (or import them in one click) and run them as a live training simulation: DCS-style faceplates, PI control loops auto-wired from your ISA tags, ISA-18.2 alarms (priorities, deadband, shelve/out-of-service), multi-pen trends with a real time axis, motor-driven equipment (pumps, compressors, conveyors) you can start, stop, and trip, flow-network simulation with fan-out, training upsets (trip a pump, stick a valve, plug a line), classic and ISA-101 high-performance themes (docs)
- Budget & cost estimator — set a project budget and watch the estimate grow live as you draw: every component carries a budgetary market price (editable per project or per component), grouped cost breakdown with installed-cost factors (Lang-style), over-budget warning in the status bar, and a cost estimate CSV export
- Fluid services — define media once (Water blue, Steam red, Slurry brown…), assign one to a line and the color spreads along the whole connected run; imported HMI pipes inherit it
- Full instrumentation palette — a 60-entry ISA-5.1 preset catalog
(every element/transmitter/indicator/controller/converter/switch for
flow, pressure, level, temperature, analysis + more), searchable by
shortcut (
FT) or full name ("flow transmitter"), placed pre-tagged with per-type auto-numbering - 195+ parametric symbols — instrument bubbles (all 16 ISA display/location variants from one parameterized symbol), control valves with 7 actuator types and fail-action marks, 14 manual valve types, safety/relief devices, 14 flow elements, level/temperature/pressure accessories, pumps, compressors, turbines, spheres, silos, columns, reactors, separators, heat exchangers, fired heaters, cooling towers, ISA-5.2 logic gates (AND/OR/NOT), DCS/PLC/SIS system boxes, fittings, solids handling (conveyors, crushers, dryers, clarifiers), boilers, flares, MCC/UPS/IS barriers, steam trap variants, solenoid (XV) and motor-operated (MOV) valves, foot/ball-check/float valves, air filter regulators, pulsation dampeners, drain funnels, fans, coils — plus your own imported SVG symbols with a click-to-place port editor
- 16 line classes with correct ISA rendering: heavy/light process, impulse, electric (dashed), pneumatic (double slash), hydraulic, capillary, data/software (circles), electromagnetic, jacketed (double line), heat-traced, underground, existing, battery limit
- Multi-sheet projects — sheet tabs, per-sheet title blocks, off-page connectors linked across sheets with jump-to-target, project-wide tag validation
- DEXPI-oriented export and import — Proteus Schema 4.2-shaped XML with a documented model mapping (docs/DEXPI-MAPPING.md); IPD Studio files round-trip, foreign files map via ComponentClass
- CAD interop — layered R12 DXF export (opens in AutoCAD/LibreCAD), and DXF underlay import: load a legacy drawing as a locked gray background and redraw intelligently on top (DWG findings)
- Generated deliverables — one-click ISA-5.4-style loop diagrams (field / marshalling / control room with numbered terminals) and ISA-20-style instrument datasheets (form editor, PDF, CSV matrix)
- Works offline — installable PWA; the whole editor runs with no internet
- Editor power — Ctrl+F find-any-tag across sheets, align/distribute, live snap guides, print-all-sheets PDF, line sequence auto-numbering
- Magnetic docking — drag a symbol so its connection point meets another symbol's and the pipe is drawn there and then, mid-drag: keep dragging and it stretches to follow. Wrong point? Shake the symbol and the line is cut, without ever letting go
- Obstacle-avoiding orthogonal routing with draggable waypoints, ports with connection rules (a pneumatic signal won't connect to a pipe nozzle)
- Live validation: duplicate tags, missing tags, illegal ISA letters, dangling lines, incompatible connections, duplicate line numbers
- Deliverables: SVG + PNG export, print-to-PDF at true sheet scale (A4–A1, ANSI B/D) with title block, instrument index CSV, line list CSV, DEXPI XML — plus starter templates
- Editor: zoom-to-cursor, pan, marquee select, undo/redo, copy/paste, rotate, snap-to-grid, keyboard shortcuts, autosave with restore
git clone https://github.com/Coldbari/IPD-Studio.git
cd IPD-Studio
npm install
npm run dev # open http://localhost:5173, Templates → Sample for a demo plant
npm test # 600+ unit tests
npx playwright test # e2e suite (starts its own dev server)Building and running it yourself is free for noncommercial use. Running it for or inside a business needs a commercial license.
IPD Studio runs fully local out of the box. Clone, npm install, npm run dev — draw, validate, generate deliverables, and save .pnid files to your
computer. No backend, no account, no configuration.
Accounts and cloud drawings are the only things that need a server, and they are switched off unless you point the app at a Firebase project of your own:
cp .env.example .env.local # then fill in your own Firebase web config.env.example walks through creating the project. This repo ships the
firestore.rules that protect the data, so firebase deploy --only firestore:rules reproduces the same security model.
A fork never talks to the upstream project. There is no built-in Firebase
config to inherit — without .env.local the sign-in screen and cloud drawings
simply don't appear. That is deliberate: a hardcoded fallback would sign a
fork's users into someone else's database.
Drawings save as .pnid.json — versioned, human-readable JSON
(schemaVersion, sheet metadata, nodes[], edges[]). See
examples/sample-plant.pnid.json.
- Custom HMI widgets from your own SVG with animation bindings (level fills, spin-on-run) — the same import pipeline the P&ID symbols already have
- Legend sheet generation (line classes + fluid colors in use)
- Real-time collaboration (opt-in self-hosted sync; the no-backend local-first default stays), review comments
- DEXPI conformance hardening; in-app DWG per the spike findings
PRs, symbol requests, and bug reports are all welcome — start with CONTRIBUTING.md for the fork→branch→PR flow, the architecture in one paragraph, and the how-to for adding a symbol. If you're a practicing I&C or process engineer, even a "this convention is wrong" issue is a valuable contribution.
Because the project sells commercial licenses to fund itself, code contributions need a one-line CLA. Issues, bug reports, and symbol requests need nothing.
IPD Studio is free for students, hobbyists, researchers, and nonprofits — and stays that way. But behind every calm-starting plant and every routed pipe there's a developer running on coffee.
☕ Buy me a coffee → keep the pumps running
One coffee a month keeps the symbols coming; a bigger one moves your feature requests to the front of the queue.
Using it at a company? That's a commercial license, not a coffee — and it's what keeps the tool free for everyone above.
Symbols are authored independently as original SVG from public-domain geometric conventions. This project is not affiliated with or endorsed by the International Society of Automation. "ISA" is referenced solely to describe the drawing conventions the symbols follow.
PolyForm Noncommercial 1.0.0 — source-available, not open source. The code is public so you can read it, learn from it, and verify what it does. Commercial use is not granted.
Free, no permission needed:
- Personal use, study, research, hobby projects
- Students and coursework
- Educational institutions, universities, labs
- Charities, public research bodies, public health and safety organizations, environmental organizations, and government institutions
Requires a paid commercial license:
- Use by or on behalf of a for-profit company, including internal use
- P&IDs drawn for paid client or consulting work
- Paid operator training delivered with HMI Studio
- Embedding, hosting, or reselling IPD Studio in any form
Your drawings are always yours — the license covers the software, not the documents you produce with it.
Commercial licensing is friendly and priced to scale: COMMERCIAL-LICENSE.md or praharshchamp610@gmail.com.
License history: versions up to v0.12.1 were released under AGPL-3.0-only, and that grant is perpetual for anyone who received them. v0.13.0 and later are PolyForm Noncommercial.