Code → flowchart as real Word & Visio shapes

Fully supported: Python, JavaScript, TypeScript, C, C++, C#, Java, Go, Rust, PHP and Pascal. All core constructs (conditions, loops, functions/procedures/methods), plus lambdas and the ternary operator, are recognized automatically and drawn per ISO 5807. What is NOT drawn (exceptions, inline anonymous lambdas) is described honestly on the “How it works” page.

Yes — just drag a file (.py .js .ts .go .php .cpp .c .java .cs .pas) straight into the code field of the editor. The language is detected from the extension automatically. You can also paste code the usual way — whichever is handier.

Seconds. Paste code and the engine draws a ready standards-compliant flowchart right away. You can edit or export it immediately.

Yes — rombik runs online in the browser, nothing to install: on a computer, phone or tablet. Building a chart and exporting work anywhere; for fine manual editing in the visual editor a bigger screen is comfier.

That’s what the rombik format is for — you give the chart as a description, not code. With Pro it’s built in: in the editor pick the «Description / any language (AI)» language, type a description (or paste code in a language we don’t parse — assembler, pseudocode) and press «Generate». Important: the AI only translates it into the rombik language, while the chart itself is drawn to ISO 5807 by our deterministic engine — so it’s stable and exactly standard-compliant, not “whatever the AI imagined”. Then fine-tune it in the visual editor. (Without Pro, or as a fallback, copy a ready prompt into an external AI chat.)

Yes — it’s one of the main use cases. Teachers generate dozens of ISO 5807 charts for handouts, lectures and examples: paste code — get a ready chart, export to Word as real objects (not a picture) and edit it for your course. For large volumes there’s batch generation — all charts at once, plus an AI skill with Pro.

By hand, a single chart is tens of minutes: aligning shapes, arrows, and redoing it all after every code change. rombik builds it from code in seconds and exactly to standard, then hands it over as native editable shapes — right inside Word, Visio or draw.io, where you can tweak them if needed. So you don’t draw from scratch — you start from a ready, submission-grade result.

rombik follows ISO 5807 (GOST 19.701-90): correct shapes (oval, rectangle, diamond, parallelogram, loop hexagon, subprogram symbol), directions and labels. If the requirements are specific (different words, a single “End”, etc.) it’s configurable. So the chart matches both the standard and your teacher.

A common rule in course guidelines: blocks describe what happens, not language syntax. After building, press “Settings” above the chart and choose “Block text”: Math — d = 0, b² − 4ac, √d instead of d == 0 and b ** 2; Words — “d equals 0”, “a is less than 20”, “x is even”, “Replace a with b”. It’s free and works for all 11 languages. With Pro, the “✨ Textbook style” button rewrites the chart textbook-style: blocks describe what happens (“Compute the remainder of dividing the first number by the second”), and small steps become one block (“Input a, b, c”); branches and loops stay the same as in the code. With Pro you can also upload the guidelines themselves (a PDF or pasted requirements): AI reads them and sets branch labels, Start/End and block text, and a link shares the setup with your group. In the Telegram bot — the “Math” / “Words” buttons in the panel.

It’s the standard for algorithm and program flowcharts: it defines which shapes mark the start and end (oval), a process (rectangle), a decision (diamond), input/output (parallelogram), a loop (hexagon), a subroutine call, and so on, plus the flow directions. It’s the standard used for flowcharts in academic work — and exactly what rombik follows, so it passes strict review.

A flowchart uses shapes joined by arrows (oval, rectangle, diamond) — the control flow is shown by lines. A Nassi-Shneiderman structogram uses nested boxes with no arrows at all: a sequence stacks top to bottom, branching is a condition triangle, a loop is a frame. Same logic, different look — rombik builds both from the same code, switched with one toggle.

Yes. The editor has a “Structogram” toggle — the same code becomes a structogram (nested boxes, no arrows). It exports in any format — Word, Visio, draw.io, Typst, Excalidraw, SVG, PNG, JPEG, WebP, GIF, PDF, HTML — and works the same across every supported language.

By default the labels come ready — Yes/No, Input/Output. If your teacher wants otherwise, after building there is a “Settings” button above the chart: “Branches” (Yes/No · +/−), “Start and end” and the caption — free. With Pro you can set any words you like: branch labels (Так/Ні · Yes/No · +/−), input/output words, the caption template “Figure N”.

Click “Edit” under the generated chart (Pro plan). The visual editor opens, where you can double-click text to change it, add new blocks, draw arrows or reroute them.

Large algorithms can be split into parts. The “✂ Split” button under the chart cuts it by height automatically. In the visual editor you split manually: lasso-select blocks (Shift+drag) → “⊞ Separate chart”, and “⊟ Merge” joins them back. Connector circles (A, B, C…) appear at the seams automatically.

To Word (.docx) and Visio (.vsdx) as native shapes; to draw.io and Excalidraw as board objects; Typst as typesetting code; plus SVG, PNG, JPEG, WebP, GIF and PDF. There is an animated GIF where the chart draws itself block by block, and an HTML page — chart and code side by side, opens in any browser. The same set works for both flowcharts and structograms.

Easiest — download as Word (.docx): the chart drops straight into your document as real objects, standard-compliant — no manual pasting needed.

Building a chart and previewing it is free: the watermarked preview isn’t for submission. Clean, unwatermarked formats — Word (.docx), Visio (.vsdx), draw.io, Typst, Excalidraw, SVG, PDF, HTML, hi-res PNG, JPEG, WebP, GIF — are exports: with an account you get one free export a month, and the Student plan gives up to 300 exports a month and shows the preview without the watermark. Pro adds the editor, AI from a description and the API. One export is one file, however many functions it has. Full pricing is on the Pricing page.

No. The same file in another format — Word, PNG, SVG or a structogram — is not another export. All your exports live in your account under «Exports», where you can pick a format and download again. A new export only counts if the code changed or you take more of the file’s functions than last time.

Student and Pro work on the site on three devices at once — say, a laptop, a phone and a university computer. If you sign in on a fourth, the session ends on the one unused the longest; manage sign-ins in your account under “Settings” → “Devices”. CLI, API keys and the Telegram bot don’t count.

Yes — with a free account your charts and history are saved and available from any device. Without an account a chart only lives until the end of the session.

Your code goes to our server, where the engine builds the chart and returns it right away. If you are signed in, the code is kept in your history: without it, build history, short chart links and re-downloading an export you already paid for could not work. If you are not signed in, no code stays on the server. We don’t publish your code, don’t share it with third parties and don’t train models on it. What exactly is stored, and for how long — see the Privacy Policy.

Yes — there’s a Telegram bot. As a group: an admin pays for the Group chat plan for the whole chat, and the whole group drops code files into the chat and gets ready charts in seconds — no sign-ups, much cheaper than paying one by one. Solo: you can also DM the bot — link your rombik account and render under your own plan, no group.

Yes. rombik ships a ready-made skill for AI agents (Claude Code, etc.) — just ask, and the agent generates charts from your code. For scripts, CI, or your own app there’s an HTTP API and a CLI. Details on the “How it works” page. Rendering via API, CLI and MCP comes with the Pro plan.