Are the templates free?

Yes. Every template is free, needs no account and carries no watermark. Edit it and export PNG, SVG, PDF, Word or PowerPoint, 5 times every 24 hours for free.

How do I put my own content in?

Click “Open in the editor”, then double-click a node in the preview to change its text, or edit the code on the left. Each template page also has a prompt you can send to an AI assistant to generate your own version with the same structure; paste the whole reply back in.

What if the template I need is not here?

Start from the closest structure and adapt it, or use the prompt under “No code yet?” in the editor to have an AI generate one. Anything Mermaid supports renders here, not only the templates listed.

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Diagram templates

Every template is a piece of Mermaid code that renders as is: open one, replace the text with yours, and export PNG, Word or PowerPoint. Free, no sign-up, no watermark; rendering and export stay in your browser.

Start drawing53 templates

Swimlane diagrams

Approval and business processes by role

Swimlane diagram templates: syntax notes, prompt and FAQ

Leave Approval Swimlane Diagram TemplateLeave request approval across four lanes (employee, line manager, department head, HR) with a two-level approval based on the number of days. Edit the Mermaid code to match your policy and export PNG, SVG, Word or PowerPoint for free.
Purchase Approval Swimlane Diagram TemplatePurchase approval across four lanes (requesting department, procurement, finance, general manager): request, quotes, tiered approval by amount, ordering, receiving and payment. Adapt it to your procurement policy and export PNG, Word or PowerPoint for free.
Expense Reimbursement Swimlane Diagram TemplateExpense claim process across three lanes (employee, manager, finance): collect receipts, submit, manager review, finance checks against budget and policy, payment. For finance policies and handbooks; free PNG, Word and PowerPoint export.
Order Fulfilment Swimlane Diagram TemplateE-commerce order handling across four lanes (customer, support, warehouse, logistics): order and payment, review, stock check and restocking, picking, shipping, delivery and after-sales. Free PNG, SVG, Word and PowerPoint export.
Cross-Department Approval Swimlane Template (Contracts)Contract approval across five lanes (requesting department, legal, finance, executive sponsor, administration): drafting, compliance and budget checks, sign-off, sealing and filing, with every return path drawn. Free PNG, Word and PowerPoint export.
Customer Service Swimlane Diagram Template (Complaints)Issue and complaint handling across four lanes (customer, support desk, technical support, quality team): log the ticket, first-line fix or escalation, reply and confirmation, root-cause analysis when unresolved. Free PNG, Word and PowerPoint export.
Software Release Swimlane Diagram TemplateSoftware release across four lanes (development, QA, product, operations): merge and build, regression testing, product acceptance, canary release and monitoring, with fixes looping back and rollback on failure. Free PNG, Word and PowerPoint export.

Org charts

Company, department and project team structures

Sequence diagrams

Research roadmaps

Methodology roadmaps for proposals and theses

Research roadmap templates: syntax notes, prompt and FAQ

Gantt charts

Project, thesis and event schedules

Flowcharts

Sign-up, ordering, complaint and incident steps

Mind maps

Book notes, project plans, study plans, SWOT

State diagrams

Order and ticket lifecycles

ER diagrams

Database designs for enrolment, shops and libraries

Class diagrams

Classes and relations for object-oriented design

Architecture diagrams

Layered web, microservice and data platform views

Timelines

Company history and project milestones

About the templates

Are the templates free?: Yes. Every template is free, needs no account and carries no watermark. Edit it and export PNG, SVG, PDF, Word or PowerPoint, 5 times every 24 hours for free.
How do I put my own content in?: Click “Open in the editor”, then double-click a node in the preview to change its text, or edit the code on the left. Each template page also has a prompt you can send to an AI assistant to generate your own version with the same structure; paste the whole reply back in.
What if the template I need is not here?: Start from the closest structure and adapt it, or use the prompt under “No code yet?” in the editor to have an AI generate one. Anything Mermaid supports renders here, not only the templates listed.