FreeDiagram
FREE · NO SIGNUP · SVG + PNG

Create any diagram using AI, for free

Describe what you want and FreeDiagram draws a fitting flowchart, mind map, timeline, org chart, or another diagram. Download SVG, PNG, or source with no signup; hourly fair-use limits apply.

auto-detect · we pick the diagram type for you  ·  ⌘↵ to run

Free · no signup · no credit card · daily fair-use limits

Live sample · CI/CD pipeline — type above to make your own
CI/CD Pipeline — Flowchart Flowchart with 13 nodes and 15 edges. CI/CD Pipeline A → B B → C C → D D → E: no no E → A D → F: yes yes F → G G → H H → I: no no I → E H → J: yes yes J → K K → L: no no L → E K → M: yes yes CI Passes? CI Passes? Build Image Build Image Deploy Staging Deploy Staging Stage OK? Stage OK? Rollback Staging Rollback Staging Deploy Prod Deploy Prod Canary OK? Canary OK? Rollback Prod Rollback Prod Released Released Notify Author Notify Author Dev Push Dev Push Lint Lint Unit Tests Unit Tests

A real visitor’s prompt and diagram

The original input and output, shown without rewriting.

A visitor typed

Create a flowchart to check whether a number entered by the user is even or odd. Include Start, Input Number, a decision diamond to check if the number is divisible by 2, Yes and No branches, display the result, and End. Use standard flowchart symbols and label all arrows clearly.
More visitor examples →Report this example
Original generated diagram
Read the full generated source
flowchart TD
  Start([Start])
  Input[/Input Number/]
  Decision{Is number divisible by 2?}
  Even[Display "Even"]
  Odd[Display "Odd"]
  End([End])

  Start --> Input
  Input --> Decision
  Decision -->|Yes| Even
  Decision -->|No| Odd
  Even --> End
  Odd --> End

What you can do with the download

SVG and PNG

Download SVG for a scalable vector image or PNG for a flat picture. To change the generated content here, revise the description and generate again.

Editing after download

The PNG has no editable shapes. Open the SVG in Inkscape to edit vector objects. For a drag-and-drop diagram canvas, use diagrams.net.

Limits worth knowing first

30 requests / hour

Per IP address. A shared network shares the limit. All attempts count, including failures. At the cap, wait an hour and try again.

2,000 characters

Maximum input length. Shorten the description to the details that matter.

20,000 per 24 hours

Site-wide request capacity over a rolling 24 hours. If it is reached, try again in an hour.

0 accounts

No signup or personal history. Download your result before closing the tab.

What happens to what you type

  1. We keep it

    Your description, generated output, full response, hashed IP address and operational metadata are saved so we can enforce limits and check quality. We don’t delete them automatically yet; email us and we remove yours.

  2. Good diagrams can appear in Examples

    Eligible prompts and results are shown publicly by default with the original prompt, until removed. Don’t enter names, client data or anything confidential.

  3. We never ask who you are

    No account, name, email or payment.

Who makes FreeDiagram

FreeDiagram is operated by Idea Market Fit. Contact us about broken results, privacy or feedback.

[email protected]

From a sentence to a diagram in four steps

  1. Describe it in plain English

    Type what you want, however rough — a single sentence is enough to start.

  2. We pick the diagram type

    FreeDiagram reads your description and chooses the format that fits best, across 25+ types — you don't need to know its name.

  3. Your diagram gets drawn

    Your words are turned into a clean, ready-to-use diagram in seconds.

  4. Download or tweak it

    Save it as SVG or PNG, or copy the source to adjust it and draw again.

25+ diagrams you can make — all free

Click any one to start with a ready-made prompt. Every type is free, hourly fair-use limited, and needs no signup.

Diagram types with their own page

Open a dedicated generator for the diagram you need — each is free, needs no signup, and uses the same hourly fair-use limit.

Free AI Mind Map Maker

Describe any topic in plain English and FreeDiagram builds a clear, structured mind map instantly — central idea, branches, and sub-branches. Free, hourly fair-use limited, no signup.

Free AI Flowchart Maker

Describe any process in plain English and FreeDiagram draws the flowchart instantly — decision branches, loops, and all. Free, hourly fair-use limited, no signup.

Free Timeline Maker

Describe any sequence of events and FreeDiagram draws a clean, professional timeline instantly — dates, milestones, and labels all arranged. Free, hourly fair-use limited, no signup.

Free Venn Diagram Maker

Describe the sets and their overlaps in plain English and FreeDiagram draws the Venn diagram instantly — intersections, exclusive regions, and labels all placed. Free, hourly fair-use limited, no signup.

Free Org Chart Maker

Describe your team or organization in plain English and FreeDiagram draws the org chart instantly — hierarchy, reporting lines, and roles all laid out. Free, hourly fair-use limited, no signup.

Free AI Fishbone Diagram Maker

Describe any problem and FreeDiagram draws the Ishikawa (cause-and-effect) diagram instantly — categories, causes, and effect. Free, hourly fair-use limited, no signup.

Free AI Decision Tree Maker

Describe any decision and FreeDiagram maps it as a tree of choices, conditions, and outcomes — free, hourly fair-use limited, no signup.

Free AI Circuit Diagram Maker

Describe any electronic circuit and FreeDiagram draws the schematic instantly — components, connections, and values. Free, hourly fair-use limited, no signup.

Free AI Logic Gate Diagram Maker

Describe any Boolean logic circuit and FreeDiagram draws the gate diagram instantly — gates, inputs, outputs, and signal flow. Free, hourly fair-use limited, no signup.

Free ER Diagram Maker

Describe your database schema in plain English and FreeDiagram draws the entity-relationship diagram instantly — entities, attributes, and relationships included. Free, hourly fair-use limited, no signup.

Free Timing Diagram Maker

Describe your digital signals or communication protocol and get a clear timing diagram in seconds. Perfect for SPI, I2C, UART, FPGA, and embedded systems documentation. No account needed.

Free Phylogenetic Tree Maker

Describe your organisms or sequences and get a publication-ready phylogenetic tree in seconds. No bioinformatics software, no account, no cost.

Free State Diagram Maker

Model what your system IS at any moment — states, transitions, guards, and events. BPMN tells you what it does; a state diagram tells you what it is.

Free Genogram Maker

Map family relationships, emotional bonds, and intergenerational patterns — no signup, no cost.

Free Ecomap Maker

Map a client's support network, identify resource gaps, and visualize relationship strengths — no signup, no cost.

Free P&ID Maker

Describe your process system and get a professional Piping and Instrumentation Diagram in seconds. No account, no software, no cost.

Free Pedigree Chart Maker

Map hereditary disease patterns, inheritance modes, and carrier status across generations — no signup, no cost.

Free Single-Line Diagram Maker

Describe your electrical power system and get a professional single-line diagram in seconds. No account, no software, no cost.

Free Ladder Logic Maker

Draft PLC programs, motor control circuits, and industrial automation logic visually — no signup, no cost.

Free Breadboard Wiring Maker

Describe your electronics circuit and get a clear breadboard wiring diagram in seconds. Perfect for Arduino projects, classroom labs, and maker tutorials. No account needed.

Free BPMN Maker

Model business processes with BPMN 2.0 — swimlanes, gateways, events, and tasks. No signup, no install, fully free.

All diagram types →

Frequently asked questions

Is FreeDiagram really free?

Yes. There is no account, credit card, watermark, or paid export. The generator uses an hourly per-IP fair-use limit to prevent automated abuse.

Do I need an account?

No login, no sign-up. Open the page, describe your diagram, and generate it.

What can I make?

Create flowcharts, mind maps, charts, timelines, org charts, family trees, ER diagrams, and more; FreeDiagram picks the likely format from your description.

Do I need design skills?

No. If you can describe it in a sentence, you can make it; there is nothing to drag, draw, or line up by hand.

Can I download a real SVG or PNG?

Yes. SVG stays sharp when resized, and PNG is convenient for documents and posts. You can also copy the generated diagram source, edit it, and render again.

Is the downloaded diagram fully editable?

The SVG can be opened in vector tools, and the generated source can be edited and rerendered. FreeDiagram is not a drag-and-drop canvas editor.

Is my data stored?

We store your prompt, generated output, full response, hashed IP address, and operational metadata. Our operational retention policy is up to 90 days, but automatic deletion is not currently implemented, so records may remain longer. Eligible prompts and results may appear publicly by default in Examples or Gallery and remain until removed. Do not enter confidential information. Use the public item’s Report link or email [email protected] with its link or request details to request removal. No account is required.

Can I use the diagram for work?

We do not claim ownership of the output. Review it for accuracy and ensure your prompt and included material do not infringe third-party rights.