SuperPrint

SuperPrint is a professional page-layout and prepress (DTP) application that runs entirely in the browser — free, no subscription, no account, no ads. It combines a real multi-page layout editor (bleed, CMYK, spot inks, master pages, linked text frames, fine typography) with an AI layout studio that turns a written brief into a print-ready, fully editable document.

This package is the launcher. It downloads the application once, installs its local dependencies and serves it on http://127.0.0.1:5173. Your projects use SuperPrint's native editable .sp format and stay on your computer unless you deliberately export them or enable a cloud AI provider.

✦ Install and run

Prerequisite: Node.js 18+ (npm included).

There is nothing to install permanently — npx fetches the launcher, which then downloads the app (~54 MB) on first run.

Windows (PowerShell)

npx.cmd superprint@latest

The .cmd wrapper is deliberate: npm.ps1 / npx.ps1 can be blocked by the PowerShell execution policy, and npx.cmd avoids having to change it. If you prefer installing first, npm.cmd i superprint then npx.cmd superprint.

macOS / Linux

npx superprint

Options

Vite options are passed straight through:

npx superprint --port 5174

The server binds to the loopback interface by default, so it is not reachable from your network or the Internet. Use --host 0.0.0.0 only on a trusted network, when you deliberately want another device to reach the app.

Updating

The launcher checks the published version and re-downloads the application when a newer one is available. Existing local copies are reused otherwise, so later launches are fast and work offline.

✦ The SuperPrint family

This package launches SuperPrint, but the project is a small family of browser-based creative applications sharing the same design language and workflow:

• SuperPrint — the full DTP / prepress layout editor: pages, spreads, bleed, CMYK, master pages, typography, imposition.
• Studio IA — the AI layout studio. Describe a brief in plain language and get a print-ready editable document. Attach documents in any office format — Word .doc / .docx, OpenDocument .odt / .ods / .odp, RTF .rtf, Excel, PDF — and they are read with their full structure: heading levels, lists, tables and images. Runs on cloud models (DeepSeek, Groq, OpenRouter, Anthropic) or fully locally with WebLLM over WebGPU.
• SuperTyPo — a font decomposer & typeface editor. Drop a .ttf / .otf / .woff / .woff2, reshape each glyph as vector contours with a Bézier pen, then re-export the typeface. Boolean operations, mirror & 90° rotation, glyph metrics, FR / EN / JP interface, and the versioned .sf (SuperFont) project format. Open it at superprint.cc/supertypo, or from the « SuperTyPo » entry of the New project dialog inside SuperPrint.

✦ Why SuperPrint?

• A real DTP tool, not a toy — real millimetre formats, bleed, trim marks, master pages, layers, guides & grids, linked text frames, editorial typography with automatic hyphenation.
• Offset-ready output — CMYK + ICC profiles, spot inks from six built-in swatch books (Toyo Color Finder, Focoltone, HKS, RAL, NCS, DIC) plus your own .ase libraries, PDF/X-3, imposition, and a soft-proof preview.
• Typography that survives export — vector PDF keeps text selectable and searchable. Hyphenation dictionaries for French, English, German, Spanish and Italian.
• 100 % browser-based — Chrome, Firefox, Safari, Edge.
• No subscription, no account, no tracking.
• Offline PWA — installable as a desktop app, with an auto-save net in IndexedDB.
• AI that can stay local — cloud models, or entirely offline with WebLLM over WebGPU.

✦ Formats

Import — Word .docx / .doc (with image extraction; .doc through a real Compound File Binary parser), OpenDocument .odt / .ods / .odp, RTF (page setup decoded: format, margins, gutter, columns, headers/footers, page breaks), PDF, InDesign .idml, Excel .xlsx / .xls (SheetJS is loaded from a CDN — Excel import needs a network connection), images (PNG, JPG, WebP, GIF, SVG, TIFF, EPS, AI, PSD), Scribus .sla (BETA), the native .sp / .json project formats, and Adobe Swatch Exchange .ase colour libraries (see below).

Export — PDF in four qualities (72 / 200 / 300 / 600 DPI) with bleed, trim marks, colour bar and imposition; PDF/X-3:2003 with OutputIntent and DestOutputProfile; CMYK through ICC profiles (three bundled: Coated FOGRA39, US Web Coated SWOP, Japan Color 2001 Coated — custom profiles can be loaded); Pantone spot channels as real /Separation colour spaces, on a CMYK or RGB quadri layer; vector typography (selectable text, embedded fonts); PNG (white or transparent) and JPG; native .sp and .json.

ℹ️ IDML is import-only. There is no IDML export — the native exchange format is .sp.

✦ Spot colours & swatch books

The Colour panel is a list of colour libraries, each one an accordion: open a book, pick a shade — every row shows its colour dot and its name, and the ink is applied to the fill or the stroke of your selection.

| Swatch book | Shades | | |---|---|---| | Toyo Color Finder | 46 | Japanese ink system, grouped by family | | Focoltone | 48 | Process-oriented reference set | | HKS | 54 | HKS K (coated) reference | | RAL | 191 | RAL Classic, with French colour names | | NCS | 55 | Natural Colour System notation | | DIC | 49 | Japanese DIC reference | | Pantone | 246 | Kept in the catalogue — its accordion arrives in a coming release | | Your own | any | Import an Adobe Swatch Exchange .ase file → a new book named after the file |

• .ase import is local: RGB, CMYK, Lab and Grey entries are parsed in the browser, nothing is uploaded, the imported book comes back on the next visit and can be removed with a ✕.
• The built-in shade values are screen-preview sRGB conversions, not the manufacturers' official libraries (this is stated in the interface). For exact values, import the library the manufacturer provides as .ase.
• On export, every ink still becomes its own named /Separation colour channel — adding libraries does not change the way plates are produced.

✦ What is included

• SuperPrint Editor — multi-page layouts, millimetre precision, typography, shapes, images, layers, guides, grids, bleed and safe areas.
• Print & prepress tools — RGB / CMYK document workflows, print preview, preflight checks, PDF output.
• Studio IA — posters, brochures, catalogues, reports and menus, generated through conversation (up to 120 pages).
• SuperTyPo — font decomposition, glyph editing, .sf projects, TTF re-export.
• Native projects — editable .sp documents, exchangeable between Studio IA and the full editor.
• Local AI — open-source WebLLM models in the browser through WebGPU, including lightweight options for machines with limited graphics memory.
• Optional cloud AI — DeepSeek, Groq, OpenRouter and Anthropic can be configured when higher-capacity models are preferred.
• Responsive interface — the Studio works on desktop and mobile; the full editor targets precision desktop work.

✦ Privacy and local operation

• The editor, project storage and local WebLLM execution run on your machine. Local models are downloaded once, cached by the browser, and prompts stay local.
• No account, no telemetry, no advertising.
• Cloud AI is optional. When you choose a provider, only the prompt and the context required for generation are sent, using the API key you configure. Nothing is sent while you use local models.

✦ Requirements

• Node.js 18 or newer, with npm / npx.
• A current Chromium-based browser is recommended.
• WebGPU-compatible hardware and browser support are required only for local WebLLM inference.
• Internet access is needed for the first application download, for updates, for WebLLM model downloads, for Excel import (SheetJS comes from a CDN) and for any cloud AI provider.

✦ Links

Repository

github.com/zigmoon/superprint

• SuperPrint web application
• Technical documentation
• Script API
• Studio IA
• SuperTyPo font editor
• Release notes, trilingual FR / EN / JP
• 2.13 — developer and maintainer
• 2.13 applications
• Support: [email protected]

✦ About 2.13

2.13 is an independent senior web, design, security and AI collective founded in 2013. SuperPrint is part of its suite of browser-based creative applications, designed to be lightweight, private and directly usable without a traditional desktop installation.

✦ License

Proprietary license — all rights reserved. SuperPrint is not open source. It runs in a browser, so its code is readable, but readable is not free to reuse. See the full text in LICENSE.

Copyright (c) 2026 Simon Dupont-Gellert (Zigmoon) · 2.13. All rights reserved.

You may use SuperPrint at superprint.cc and through its local launcher (npx superprint), and everything you produce belongs to you — your documents, images, fonts, templates and your exported PDF / PNG / JPG files.

You may not copy, redistribute, resell, host, mirror, modify, create derivative works from, remove the copyright notices, or reuse the code, the templates and the asset library — including to build, train or improve a competing product or an AI model — without written permission.

Commercial licensing, custom builds, white-labelling, self-hosting and partnerships: [email protected] · [email protected]

Third-party components bundled with the application (Fabric.js, pdf-lib, pdf.js, JSZip, Mammoth, SheetJS, WebLLM, Little CMS lcms-wasm), the bundled fonts and the Pantone ink names keep their own licenses and trademarks, which prevail over this one for the parts they cover.