15 templates
Pikchr templates
Text-based diagrams from the author of SQLite. Compact algebra of boxes, arrows, ovals, splines — perfect for documentation. Renders via Kroki, no install required.
Hello Pikchr
Minimal box → arrow → oval flow — the canonical intro.
Flow & ProcessThree-tier web app
Browser → web → app → DB, positioned with Pikchr's relative coords.
ArchitecturePub/sub topology
Producer → broker → multiple subscribers.
ArchitectureTraffic-light state machine
Red → Green → Yellow → Red cycle.
UML & SoftwareSequence (call/response)
Two lifelines with an HTTP request and response.
UML & SoftwareMini ER diagram
Customer 1 — * Order * — 1 Product
Data & SchemaBinary tree
Small node-and-edge tree, positioned with named coordinates.
MathematicsTiny network
Internet → firewall → switch → 3 servers.
ArchitecturePikchr — feedback loop
Closed-loop control diagram with sensor and actuator.
Flow & ProcessPikchr — network topology (RFC style)
Classic plus-sign router topology.
ArchitecturePikchr — order state machine
States and transitions for an order lifecycle.
UML & SoftwarePikchr — cache layers
Browser → CDN → cache → DB cascade.
ArchitecturePikchr — data pipeline
Source → ingest → transform → warehouse → BI.
Data & SchemaSimple Process (Pikchr)
Boxes and arrows for a small process.
Flow & ProcessRequest Path (Pikchr)
Client through a load balancer to a database.
Architecture