How to Make a Flowchart Online for Free (Step-by-Step)

You can make a professional flowchart online for free in about five minutes. No signup, no software install, no watermark on the export. Open the Flowchart Maker, drag shapes onto the canvas, connect them with arrows, add your labels, and export as PNG or SVG. That’s it — five steps, and you have a flowchart ready for a presentation, a process document, or a Slack message.

Below, I’ll walk through building a real flowchart from scratch — a customer support ticket flow — so you can follow along and have something useful by the end.

What You’ll Build

We’re creating a Customer Support Ticket Flow that maps the journey from the moment a ticket arrives to the moment it’s closed. The flow looks like this:

1. Ticket Received
2. Categorize the Issue
3. Decision: Is it a billing issue?
4. If yes → Route to Billing Team
5. If no → Route to Technical Support
6. Assigned agent investigates
7. Resolve the ticket
8. Close the ticket

This covers the three core flowchart elements — process steps (rectangles), decisions (diamonds), and start/end points (ovals) — so you’ll learn the mechanics that apply to any flowchart you build afterward.

Step 1: Open the Flowchart Maker

Head to the Flowchart Maker. You’ll see a blank canvas with a toolbar on the left containing shape options: rectangles, diamonds, ovals, parallelograms, and more. The canvas is infinite-scroll — you can pan and zoom to fit any size diagram.

No account creation. No email prompt. The tool loads instantly and you’re working within seconds. Everything runs in your browser, so your diagram data never leaves your device.

Step 2: Add Your Shapes

Start by dragging an oval onto the canvas. This is your terminal shape — it marks the beginning of the flow. Double-click it and type “Ticket Received.”

Next, add a rectangle below it. Rectangles represent process steps — actions that happen. Label this one “Categorize Issue.”

Below that, drag a diamond onto the canvas. Diamonds are decision points — yes/no questions that split the flow into branches. Label it “Billing Issue?”

Now add two rectangles branching from the diamond — one to the left labeled “Route to Billing Team” and one to the right labeled “Route to Technical Support.” Below each of those, add another rectangle: “Investigate Issue.” Then add a final rectangle “Resolve Ticket” and an oval at the bottom: “Ticket Closed.”

Pro tip: Hold Shift while dragging to keep shapes aligned on a grid. Alignment matters — a sloppy flowchart is harder to read than no flowchart at all.

Step 3: Connect Everything With Arrows

Hover over any shape and you’ll see small connection ports appear on each edge — top, bottom, left, right. Click a port and drag to another shape’s port to create a connector arrow.

Connect the shapes in order:

• Ticket Received → Categorize Issue
• Categorize Issue → Billing Issue? (diamond)
• Billing Issue? → Yes → Route to Billing Team (left branch)
• Billing Issue? → No → Route to Technical Support (right branch)
• Both routing boxes → Investigate Issue
• Investigate Issue → Resolve Ticket
• Resolve Ticket → Ticket Closed

Label the two arrows coming out of the diamond. Click on the “Yes” arrow and add the text “Yes”; do the same for “No.” Decision branches without labels are the number one source of confusion in flowcharts.

The tool supports straight, elbow, and curved connector styles. For most flowcharts, elbow connectors (right-angle bends) look the cleanest.

Step 4: Add Text and Color

Double-click any shape to edit its text. You can adjust font size and alignment to keep things readable. For a support ticket flow, keep labels short — two to four words per shape is ideal.

Color-coding makes complex flowcharts scannable at a glance. Here’s a simple scheme for our diagram:

• Blue for process steps (rectangles)
• Orange for decision points (diamonds)
• Green for start/end terminals (ovals)
• Red for error or escalation paths (if you add them later)

Select a shape, pick a fill color from the toolbar, and you’re done. Don’t overthink the palette — three to four colors max. More than that creates visual noise instead of clarity.

Step 5: Export and Share

When your flowchart looks right, hit the export button. You have three options:

• PNG — best for dropping into documents, emails, or Slack. Raster format, looks good at standard zoom.
• SVG — vector format, scales to any size without pixelation. Perfect for presentations or printing. You can also convert SVG to PDF via your browser’s print dialog.
• JSON — saves the entire diagram structure. Import it later to resume editing with all shapes, connections, colors, and text preserved.

There’s no watermark on any export. The file is yours.

Tips for Better Flowcharts

After building hundreds of flowcharts, here are the patterns that separate clear diagrams from confusing ones:

• Flow top to bottom, left to right. This matches how people read. Diagonal flows or bottom-to-top paths force your reader to fight their instincts.
• One decision per diamond. If you’re cramming “Is it billing AND is the customer premium?” into one diamond, split it into two sequential decisions.
• Label every arrow from a decision. Unlabeled branches are ambiguous. Always write “Yes” and “No” (or the specific condition) on each path.
• Keep it on one page. If your flowchart doesn’t fit on a single screen, it’s probably trying to document too much. Break large processes into sub-flowcharts.
• Use consistent shape sizes. Rectangles that are all the same width look professional. Randomly sized shapes look like a draft.

Beyond Flowcharts

Once you’ve built your flowchart, you might find you need related visual tools. The Diagram Maker handles org charts, network diagrams, and entity-relationship diagrams. The Mind Map Maker is better for brainstorming sessions where you’re exploring ideas rather than documenting a fixed process. And if your flowchart feeds into a project timeline, the Gantt Chart Maker turns those steps into a scheduled plan.

All free, all browser-based, all zero-signup.

Try the Flowchart Maker →