Free diagram tool
A flowchart turns a process into connected shapes: steps, decisions, inputs, and outcomes. FreeFlowCharts is a free online flowchart maker you can use without signing up. Build process maps, decision trees, system architectures, and onboarding flows — then export or share a live link.
What you can build Process flowcharts for operations, manufacturing, and SOPs. Software and product flows: user journeys, API request handling, CI/CD pipelines, bug triage. Business workflows: approvals, onboarding, support escalation, sales pipelines. Decision trees and troubleshooting guides with clear Yes/No branches. Swimlane diagrams that show which team or role owns each step. Features that matter for real work 20+ node types including start/end, process, decision, I/O, delay, subprocess, milestones, handoffs, costs, and sticky notes. Seven visual themes plus custom background colors and gradients for presentations and docs. Export to high-resolution PNG, scalable SVG, structured JSON, or Mermaid syntax for GitHub and Notion. Live share URLs so teammates can view an interactive diagram without an account. Optional AI generation (Pro) from plain-English descriptions when you want a first draft in seconds. Guest mode auto-saves to your browser; sign in only when you want cloud storage and version history. Standard flowchart symbols (quick reference) Oval (terminator): start or end of the process. Rectangle (process): a single action or operation. Diamond (decision): a question with labeled branches (Yes/No or multiple outcomes). Parallelogram (input/output): data entering or leaving the system. Double-lined rectangle (subprocess): a multi-step process documented elsewhere. Arrows (flow lines): direction of the process; avoid crossings when possible. Best practices Define start and end before adding middle steps. One action per process rectangle; split complex steps into subprocesses. Label every exit from a decision diamond. Prefer top-to-bottom or left-to-right flow for readability. Review with someone unfamiliar with the process — if they get stuck, simplify. How to use it 1 Open the editor Go to freeflowcharts.app/editor — no signup required.
2 Add nodes Drag node types from the sidebar onto the infinite canvas.
3 Connect the flow Drag from a handle on one node to another to create edges. Label decision branches.
4 Style and refine Apply a theme, adjust colors, add descriptions or swimlanes.
5 Export or share Download PNG/SVG/JSON/Mermaid, or generate a live share link and embed code.
Frequently asked questions Is the flowchart maker really free? Yes. Core editing, export, themes, and sharing are free with no watermarks. Pro is optional for AI features and an ad-free experience.
Can I export Mermaid for GitHub? Ready to draw? Open the free editor in your browser. No account, no watermarks, no install.
Open flowchart editor