Data-flow diagram generator

Data-flow diagram generator is a free browser tool that produces confirmed data-flow diagram from approved jurisdiction scope and approved task scope. It does not make legal applicability decisions.

Free. No account or payment needed.

Your browser is preparing this tool.

What does the data-flow diagram generator produce?

Draw an actual directed data-flow diagram from confirmed source, process, store and recipient relationships.

Use the exact local files and task-specific inputs listed below. Preparation and review stay in this browser. Inspect all findings before preparing the finalized pack.

What do you need before you start?

  • Define your exact task, source population and method.
  • Keep the unchanged original files and the selected source versions.
  • Review missing, invalid and unresolved facts before preparation.

What information do you enter?

Select the actual local sources and freeze the task-specific inputs below. Keep source files and complete findings private.

  • Reference. Stable reference for this exact supplied population.
  • Working pack version. Customer-controlled version.
  • Organization. Actual organization owning this work.
  • Approved jurisdiction scope. Select and support the actual jurisdiction and instrument for each system.
  • Responsible reviewer. Accountable human reviewer.
  • Review timestamp. Exact timestamp with seconds and confirmed offset.
  • Approved task scope. Included and excluded systems, populations, assumptions and intended use.
  • Scope approval reference. Actual accountable approval reference.
  • Approved method version. Actual your method and calendar assumptions.
  • Method source reference. Exact original file supporting the selected method.
  • Approved method source locator. Exact JSON pointer or reviewed locator.
  • Method approver. Responsible human approver.
  • Method approval timestamp. Approved instant no later than review.
  • System population. Selected or declared complete supplied population.
  • Declared system count. Required for a declared complete population.
  • Confirmed data-flow diagram scope inputs. Readable named rows, exact relationships, original sources and responsible decisions.
  • Boundaries. Readable named rows, exact relationships, original sources and responsible decisions.
  • Components. Readable named rows, exact relationships, original sources and responsible decisions.
  • Flows. Readable named rows, exact relationships, original sources and responsible decisions.
  • Evidence. Readable named rows, exact relationships, original sources and responsible decisions.
  • Actions. Readable named rows, exact relationships, original sources and responsible decisions.
Field guidance. Choose Use fictional example in the tool to fill a sample, then replace it with your own facts.
FieldWhat to enter
ReferenceRequiredStable reference for this exact supplied population.
Working pack versionRequiredCustomer-controlled version.
OrganizationRequiredActual organization owning this work.
Approved jurisdiction scopeRequiredSelect and support the actual jurisdiction and instrument for each system.
Responsible reviewerRequiredAccountable human reviewer.
Review timestampRequiredExact timestamp with seconds and confirmed offset.
Approved task scopeRequiredIncluded and excluded systems, populations, assumptions and intended use.
Scope approval referenceRequiredActual accountable approval reference.
Approved method versionRequiredActual your method and calendar assumptions.
Method source referenceRequiredExact original file supporting the selected method.
Approved method source locatorRequiredExact JSON pointer or reviewed locator.
Method approverRequiredResponsible human approver.
Method approval timestampRequiredApproved instant no later than review.
System populationRequiredSelected or declared complete supplied population.Choose from Selected records only, Declared complete population.
Declared system countOptionalRequired for a declared complete population.
Confirmed data-flow diagram scope inputsRequiredReadable named rows, exact relationships, original sources and responsible decisions.
BoundariesRequiredReadable named rows, exact relationships, original sources and responsible decisions.
ComponentsRequiredReadable named rows, exact relationships, original sources and responsible decisions.
FlowsRequiredReadable named rows, exact relationships, original sources and responsible decisions.
EvidenceRequiredReadable named rows, exact relationships, original sources and responsible decisions.
ActionsRequiredReadable named rows, exact relationships, original sources and responsible decisions.

What you can download

Every result must identify its supplied facts, assumptions and unresolved items.

Free resultIncluded downloads

Enter your information, inspect the on-screen result and keep a browser backup.

Editing and direct copies of your entered information stay free.

  • Confirmed data-flow diagram. Complete exact named input and output population.
  • Seven core formal/data files plus exact originals, with complete Excel/JSON, formal PDF/DOCX, findings, delivered hashes and instructions. Diagram tools include an eighth SVG file.
  • Full source-linked approved drafts and traceable unresolved findings, exact dates, arithmetic, relationships and dependency blockers.
  • Exact original bytes, unfinished drafts, retained history, strict recovery and preserved prior work.

These supported outputs are free. No checkout is required.

Fictional review report (PDF). Editable review (DOCX). Complete fictional pack (ZIP). Requires tailoring and responsible review. Samples use the finalized renderer.

How does the data-flow diagram generator work?

  1. 1
    Define the approved scope

    Reference. Stable reference for this exact supplied population.

  2. 2
    Enter task-specific evidence

    Validate exact component IDs, versions, declared trust boundaries and directed flows. Join actual data categories, purpose, owner, jurisdiction and confirmed source evidence. Draw confirmed relationships with labeled arrows, preserving unresolved links as separate findings. Identify disconnected components, boundary crossings and directed cycles. Export the complete standalone SVG and exact adjacency, node and flow data.

  3. 3
    Inspect complete findings

    Review all named calculations, original source bindings and unresolved findings.

  4. 4
    Keep recoverable work

    Exact strings and original bytes save in this browser. Strict restore validates exact tool, method revision, row shapes, source hashes and history. Previous work and purchases remain preserved.

  5. 5
    Prepare the finalized pack

    Prepare 8 plus selected attachments complete files, then download them free. Review the fictional sample below.

Common questions

What information does the data-flow diagram generator need?

Enter reference. Stable reference for this exact supplied population; working pack version. Customer-controlled version; organization. Actual organization owning this work; approved jurisdiction scope. Select and support the actual jurisdiction and instrument for each system; responsible reviewer. Accountable human reviewer. Define your exact task, source population and method.

What does the data-flow diagram generator produce?

Confirmed data-flow diagram. Complete exact named input and output population. Seven core formal/data files plus exact originals, with complete Excel/JSON, formal PDF/DOCX, findings, delivered hashes and instructions. Diagram tools include an eighth SVG file. Full source-linked approved drafts and traceable unresolved findings, exact dates, arithmetic, relationships and dependency blockers. Exact original bytes, unfinished drafts, retained history, strict recovery and preserved prior work. Review unresolved findings and limitations before use.

Is this tool free?

Yes. The on-screen result and listed downloads are free. No checkout is required. Keep local backups and review the stated method and limits.

Can I use the data-flow diagram generator for this task?

Draw flows from confirmed relationships. This browser preparation uses original customer evidence and explicitly approved instruments, criteria, calendars and decisions. It does not make legal applicability decisions, authenticate delivery, perform an independent bias audit, scan a network or prove security effectiveness. No remote AI or provider is called. Exact originals remain in this browser. Original files are not saved to the cloud.

What still needs review?

This browser preparation uses original customer evidence and explicitly approved instruments, criteria, calendars and decisions. It does not make legal applicability decisions, authenticate delivery, perform an independent bias audit, scan a network or prove security effectiveness. No remote AI or provider is called. Exact originals remain in this browser. Original files are not saved to the cloud.

At most 500 rows and 200000 characters per table, 20 files, 10 MB each, 25 MB total, 900 KB input and 8 MB complete output metadata. Exact original JSON is bounded to 1 MB.

All operative applicability and current legal interpretation require your sources. Calendar assumptions, unknown demographics, dependent supplier support and reported effectiveness remain explicit.

Method notes and a review scenario

Directed graph from exact confirmed components, trust boundaries and flow evidence.

Validate exact component IDs, versions, declared trust boundaries and directed flows. Join actual data categories, purpose, owner, jurisdiction and confirmed source evidence. Draw confirmed relationships with labeled arrows, preserving unresolved links as separate findings. Identify disconnected components, boundary crossings and directed cycles. Export the complete standalone SVG and exact adjacency, node and flow data.

Method version 2026-10-09.decision-operations.1.

Confirmed collection and unresolved external storage

This fictional scenario illustrates review steps. It is not an executed tool or provider result.

  • FORM-1 sends selected contact fields to APP-1 across a declared boundary. Source E-1 confirms that direction.
  • A possible external storage node has no confirmed flow evidence.

What to review

  • Draw the confirmed FORM-1 to APP-1 arrow.
  • Retain the uncertain relationship as a finding instead of presenting a verified transfer.

The tool validates declared graph relationships. It does not observe live traffic or select legal transfer mechanisms.

Source sections for this scope

Scope limits

  • No automated discovery or network scan.
  • No security effectiveness or legal transfer conclusion.