43c0be5735
* Zotero 1: range fields and custom document properties round-trip Citation managers' ADDIN fields (Zotero, Mendeley, EndNote) are now kept as range fields: FieldStart/FieldEnd markers with the result as ordinary, formatted content between them, possibly spanning paragraphs (a Zotero bibliography). Before, the result was flattened to plain text and a multi-paragraph field lost its end. - doc: InlineObject::FieldStart/FieldEnd, Document::field_ranges, balance_field_ranges; CustomProp and custom_props with get/set/remove. - docx: read ADDIN fields as ranges (field codes up to 2 MiB), write them back as begin/instr/separate…end; orphan markers are dropped on save so files always hold whole fields. docProps/custom.xml is parsed and regenerated (simple types as text, vectors/blobs verbatim) instead of passed through, so Zotero's ZOTERO_PREF_n settings are editable. - engine: file.properties reads and sets custom properties. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero 2: wire-protocol client and document bridge New crate wordcraft-zotero (L5) speaks Zotero's published word-processor protocol (port 23116; 32-bit transaction id + big-endian length frames, JSON payloads, ERR: replies): - client: sends an integration command (addEditCitation, addEditBibliography, addNote, refresh, removeCodes, setDocPrefs) and answers Zotero's calls until Document_complete or the connection closes (cancelled dialog). Answers go through a callback so the app can apply them on its UI thread; run_on_session answers directly. - Bridge: implements Zotero's Document_*/Field_* calls on a Session. Fields are stored as Word's plugin stores them (ADDIN ZOTERO_ range fields; prefs in ZOTERO_PREF_n, with Zotero's ReferenceMark field type kept as Word's Field in the file), so documents stay Word-compatible. Rich text (RTF or HTML) keeps citation formatting; bibliographies get a Bibliography style from setBibliographyStyle; note styles create footnotes/endnotes, and deleting a lone note citation removes its note; placeholder links convert to fields. One transaction = one undo step. Field ids stay stable through inserts and deletes. - Tests: a fake Zotero over a real socket, every call, docx round trip, hostile arguments for every method, random frames (proptest). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero 3: Zotero in the app and the CLI, tested with the real Zotero - ui.zotero.<command> (addEditCitation, addEditBibliography, addNote, refresh, removeCodes, setDocPrefs), ui.zotero.status and ui.zotero.answer. The socket runs on a background thread; each of Zotero's calls is answered on the UI thread against the session, and Zotero's questions become a dialog the session waits on. Web builds report that Zotero needs the desktop app. - wordcraft-cli zotero <command> <file> [--save] [--trace] [--port]. - Bridge: a selection Zotero makes to show a citation is put back when the session ends. - ui_shot: {"wait": ms} keeps frames running for background work. - docs/zotero.md. Checked against Zotero 10.0.6: refresh of a citation and bibliography (APA), its "modified citation" question answered in the app's dialog, RTF results with italics, Bibliography style, prefs round trip. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero 4: switching between in-text and note styles moves citations Document_convert and Field_convert now move a citation between the text, footnotes and endnotes, as Zotero asks when the document's style changes between an in-text and a note style: into a new note at the same place, or back into the text where the note mark was (removing a note that held only the citation; keeping one with other text). Field ids survive the move, formatting is kept, and each Zotero session stays one undo step. Checked against Zotero 10.0.6: unlink citations (removeCodes, with its confirmation question) and a refresh after switching the document to Chicago notes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero 5: Zotero tab in the ribbon A Zotero tab (before Help) with Add/Edit Citation, Add Note, Add/Edit Bibliography, Refresh, Document Preferences and Unlink Citations. The buttons are disabled while a Zotero command is running and in the web build. Three new icons drawn in code (document preferences, unlink, add note); the others reuse the References tab's. Labels and status messages translated (zh-hans, zh-hant, ja). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero: Add/Edit Bibliography inserted nothing Zotero reads a newly inserted bibliography field back before filling it, and unlinks a field whose text is empty, taking it for a bibliography the user deleted. Our new fields were empty, so Add/Edit Bibliography ended with Field_removeCode and nothing in the document. New fields now hold "{Citation}" until Zotero writes the result. Found by tracing the session with Zotero 10.0.6; regression test added. wordcraft-cli zotero takes --cmd (run before the Zotero command, e.g. caret.docEnd) to reproduce sessions from a given caret position. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Zotero: log each command's outcome and Zotero's calls to the app log Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Cargo.lock: wordcraft-zotero at the workspace version (0.4.0) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>
WordCraft
Writing and document design; an open-source, clean-room reimplementation of Microsoft Word, rebuilt in pure Rust.
A fast, open-source word processor with the Word workflow you already know: the ribbon, styles,
tables, track changes, references and mail merge. It reads and writes .docx, runs natively on
macOS, Windows, Linux and BSD, and in the browser via WebAssembly.
By the ArtCraft team.
WordCraft on getartcraft.com · ArtCraft · All Crafting Apps
The Open Studio Handbook, WordCraft's built-in sample: the ribbon, live Styles gallery, rulers and the Navigation pane.
Note
ArtCraft is a community of artists from all walks of life. Painters, photographers, filmmakers, illustrators, designers, animators, hobbyists, and people who picked up a pencil last week. If you make things, you're one of us. Come say hi on Discord.
A tour · Why WordCraft · What works today · Quick start · For agents · Architecture · Roadmap · Downloads · The Crafting Apps · License and credits
A tour
Every screenshot below is WordCraft itself, rendered offscreen by its own UI test harness
(cargo run -p wordcraft-ui-egui --example ui_shot).
 Review. Track changes, comment balloons in the margin, accept and reject, spelling and grammar as you type. |
 References. Tables of contents, footnotes, citations in APA, MLA, Chicago or IEEE, index and captions. |
 Design. Themes, style sets, paragraph spacing, watermarks, page colour and borders. |
 Dark mode with formatting marks, and the Insert tab: tables, pictures, shapes, links, headers, footers, fields and symbols. |
 Layout. Drop caps, text wrapping around pictures and shapes, automatic hyphenation, line numbers and page borders. |
|
 File. Start from a template, open recent documents, edit properties, export to PDF and other formats. |
|
Why WordCraft
- Familiar. Word's ribbon tabs, groups, shortcuts and behaviour: Enter continues a list, Tab demotes it, Ctrl/⌘+B bolds the word under the caret, the Styles gallery previews styles live, F4 repeats, F7 checks spelling, F8 extends the selection.
- Your files. Opens and saves .docx (OOXML), and also .odt, .rtf, .html, .md, .tex (LaTeX), .txt; exports PDF with real, selectable text, links and bookmarks.
- Fast. Paragraph layout is cached, so typing in a 188-page document re-lays it out in about 1.4 ms; pages render on demand.
- Everywhere. One Rust codebase for macOS, Windows, Linux, BSD and the web. No Electron, no Tauri: native egui on the GPU.
- Built for agents. Every action is a command with an id. The same 389 commands drive the ribbon, keyboard shortcuts, the command search, a command-line tool, a JSON control channel and an MCP server.
- Private. Spelling, grammar and everything else work offline.
- Open. MIT OR Apache-2.0. Clean-room: built from public specifications and observation, with every asset original or openly licensed.
What works today
| Area | Highlights |
|---|---|
| Writing | Fast typing with IME, smart quotes, AutoCorrect, list autoformat (* , 1. ), dashes; word, sentence, paragraph selection; drag-select; clipboard with formatting; undo/redo; find and replace with regex |
| Formatting | Fonts, sizes, bold/italic/underline styles, strike, sub/superscript, caps, highlight, colours, character spacing, Format Painter, Change Case, Clear Formatting |
| Paragraphs | Alignment, indents (draggable on the ruler), spacing, line spacing, tabs with leaders, borders, shading, keep with next, widow/orphan control |
| Styles | Built-in style set, live gallery, Styles pane, create/modify/update styles, style sets, themes |
| Lists | Bullets, numbering, multilevel, restart, set value, custom formats |
| Tables | Insert by grid, merge/split, styles with banded rows, borders, shading, header rows repeated across pages, rows that split across pages, sort, formulas, text ↔ table |
| Pages | Margins, orientation, size, columns, page/column/section breaks, headers and footers (first page, odd/even), page numbers, watermark, page borders, line numbers, vertical alignment, drop caps, automatic hyphenation |
| Objects | Pictures (resize, crop, recolour, brightness/contrast, transparency, background removal, picture styles, rotate), shapes, text boxes, floating position with text wrapping (square, top and bottom, behind or in front of text) |
| References | Table of contents, footnotes and endnotes, citations and bibliography (APA, MLA, Chicago, IEEE), captions, table of figures, cross-references, index, table of authorities |
| Review | Spelling and grammar with suggestions, thesaurus, word count, comments in margin balloons or a pane, track changes, accept/reject, compare documents, restrict editing, accessibility checker, document inspector |
| Mailings | Mail merge from CSV, merge fields, address block, greeting line, rules, preview, finish to a document; envelopes and labels |
| View | Print layout, web layout, draft, read mode, focus, zoom, one/multiple pages, page width, Navigation pane, rulers, gridlines, dark mode; interface in English, 简体中文, 繁體中文, 日本語, Português (Brasil), Español or Українська (follows the system language by default) |
| Files | .docx read/write (opens in Word), PDF export, .odt, .rtf, .html, .md, .tex, .txt import/export, page images |
The honest picture, area by area, is in ROADMAP.md and the generated feature parity report.
Quick start
git clone https://github.com/storytold/wordcraft
cd wordcraft
cargo run --release -p wordcraft -- --sample # the desktop app with the sample document
cargo run --release -p wordcraft -- report.docx # open a document
Command line:
wordcraft-cli convert report.docx report.pdf # docx, pdf, odt, rtf, html, md, tex, txt, png
wordcraft-cli text report.docx # plain text
wordcraft-cli inspect report.docx # structure as JSON
wordcraft-cli run --template sample \
--cmd 'select.text={"text":"Membership"}' --cmd format.bold --save out.docx
Web: cd apps/wordcraft-web && trunk serve, then open http://127.0.0.1:8771/?sample.
For agents: CLI and MCP
WordCraft was designed to be driven by people and by AI agents.
claude mcp add wordcraft -- wordcraft-cli mcp # headless documents
wordcraft --control 7981 & # or drive the running app…
claude mcp add wordcraft-app -- wordcraft-cli mcp --connect 127.0.0.1:7981
Tools include list_commands, execute, batch, type_text, select_text, inspect_document,
render_page, save_document, and, with a running app, screenshot, click and key. Agents
can check their work through inspect_document without screenshots. See docs/mcp.md
and the control protocol. Macros record any sequence of commands and
play it back (tools.recordMacro, tools.macros).
Logs
The desktop app writes its log records to standard error and to logs/wordcraft.log next to its
preferences: on Linux $XDG_CONFIG_HOME/wordcraft/logs/ (by default ~/.config/wordcraft/logs/),
on macOS ~/Library/Application Support/WordCraft/logs/, on Windows %APPDATA%\WordCraft\logs\.
A start from a desktop menu or the Dock has no terminal, so this file is what to attach to a bug
report: unreadable parts of a .docx, pictures or fonts a PDF export had to leave out and panics the
command guard recovered from land there. Each launch moves the previous log to wordcraft.1.log
(and that one to wordcraft.2.log), so the log of a run that crashed survives the next start; a
log stops growing at 16 MiB. --version writes no file, and runs with WORDCRAFT_NO_PREFS (agents'
test runs) log to standard error only. Document text is never logged; a panic message leaves out
the text it quotes.
By default WordCraft's own crates log at info and everything else at warn. RUST_LOG replaces
that with env_logger-style directives, for example RUST_LOG=debug,
RUST_LOG=warn,wordcraft_docx=trace or RUST_LOG=info,wgpu_core=warn; a directive ending in *
covers every target starting with it (wordcraft*=debug). The logger is
apps/wordcraft/src/logging.rs.
Architecture
| Layer | Crate | Job |
|---|---|---|
| L0 | wordcraft-geom |
units and measurements |
| L1 | wordcraft-doc, wordcraft-fonts, wordcraft-proof |
document model and editing; fonts and shaping; spelling, grammar, hyphenation |
| L2 | wordcraft-layout, wordcraft-docx, wordcraft-formats |
line breaking, pagination, tables, notes, hit testing; OOXML; ODT/RTF/HTML/Markdown/TXT |
| L3 | wordcraft-render, wordcraft-pdf |
rasteriser (vello_cpu); PDF (krilla) |
| L4 | wordcraft-engine |
session, undo, 389 commands, Word feature catalog |
| L5 | wordcraft-mcp |
MCP server |
| L6 | wordcraft-ui-egui |
the Word-style front end (swappable) |
| apps | wordcraft, wordcraft-cli, wordcraft-web |
desktop, command line, browser |
cargo xtask ci runs formatting, clippy, ~250 tests, the asset-attribution check, the layering
check and the wasm build. Contributor and agent instructions: AGENTS.md.
Roadmap
WordCraft covers 87% of Word's ribbon features with commands today; counting depth and fidelity, we estimate about 62% of real feature parity. An alpha for everyday writing is close: the remaining work is mostly testing against real-world .docx files, native printing and the first signed builds. Charts, SmartArt, the equation editor and the Draw tab come after. Details and estimates: ROADMAP.md.
Downloads
Download WordCraft from GitHub: the latest release has every build listed below, and all releases has earlier versions and their notes. <ver> in the file names is the version number, and SHA256SUMS.txt lists a checksum for every file.
Windows
| Build | Installer | Portable |
|---|---|---|
| x64 (64-bit Intel/AMD) | wordcraft-<ver>-windows-x64.msi |
wordcraft-<ver>-windows-x64-portable.zip |
| arm64 (Snapdragon and other ARM PCs) | wordcraft-<ver>-windows-arm64.msi |
wordcraft-<ver>-windows-arm64-portable.zip |
| x86 (32-bit) | wordcraft-<ver>-windows-x86.msi |
wordcraft-<ver>-windows-x86-portable.zip |
Installers and executables are code-signed.
If the app doesn't open on Windows: the desktop app initializes only DirectX 12 by default.
Letting wgpu also create an OpenGL instance can crash some graphics drivers (AMD's
atio6axx.dll) before the window appears, so the app would flash in Task Manager and quit.
WGPU_BACKEND overrides the default for troubleshooting (for example dx12 or vulkan). In
PowerShell, from the folder containing the executable:
$env:WGPU_BACKEND = "vulkan"
& .\wordcraft.exe
Remove-Item Env:WGPU_BACKEND # restore the default for later launches
An explicit gl override can bring the driver crash back on affected systems. The macOS, Linux
and web backend defaults are unchanged.
macOS
| Build | File | Notes |
|---|---|---|
| App, universal (Apple silicon + Intel) | wordcraft-<ver>-macos-universal.dmg |
Signed and notarized |
| Command-line tool, universal | wordcraft-cli-<ver>-macos-universal.zip |
Signed and notarized |
Linux
| Format | x86_64 | aarch64 (ARM64) | Notes |
|---|---|---|---|
| AppImage | wordcraft-<ver>-linux-x86_64.AppImage |
wordcraft-<ver>-linux-aarch64.AppImage |
Runs anywhere; updates itself with AppImageUpdate (.zsync files) |
| Flatpak | wordcraft-<ver>-linux-x86_64.flatpak |
wordcraft-<ver>-linux-aarch64.flatpak |
Sandboxed; flatpak install --user <file> |
| Debian/Ubuntu | wordcraft-<ver>-linux-x86_64.deb |
wordcraft-<ver>-linux-aarch64.deb |
|
| Fedora/RHEL/openSUSE | wordcraft-<ver>-linux-x86_64.rpm |
wordcraft-<ver>-linux-aarch64.rpm |
|
| Tarball | wordcraft-<ver>-linux-x86_64.tar.gz |
wordcraft-<ver>-linux-aarch64.tar.gz |
Unpack anywhere |
FreeBSD
| Build | File |
|---|---|
| x86_64 | wordcraft-<ver>-freebsd-x86_64.tar.gz |
Web (WebAssembly)
| Build | File | Notes |
|---|---|---|
| Static site | wordcraft-web-<ver>.zip |
Runs in a modern browser; host it on any static server |
The Crafting Apps
WordCraft is one of the Crafting Apps: free, open-source creative tools from the ArtCraft team, each written from scratch in Rust and each able to stand on its own.
| App | What it's for | Code | Learn more | |
|---|---|---|---|---|
 |
PhotoCraft | Image editing: layers, masks, type and real PSD files | GitHub | Website |
 |
VectorCraft | Vector illustration | GitHub | Website |
 |
FilmCraft | Video editing, color and sound | GitHub | Website |
 |
LightCraft | Photo library and raw development | GitHub | Website |
 |
PdfCraft | Reading, organizing and protecting PDFs | GitHub | Website |
 |
EffectCraft | Motion graphics and visual effects | GitHub | Website |
 |
DesignCraft | Page layout and publishing | GitHub | Website |
 |
WordCraft | Writing and document design · you are here | GitHub | Website |
And ArtCraft itself, our AI image and video studio for artists who want real control.
Come make things with us
Our Discord is where artists of every kind hang out: people who paint, shoot, draw, cut film, set type, and people still figuring out what they like to make. Share what you're working on, ask for help, tell us what's broken, or tell us what you wish these tools could do. Whatever your medium and however long you've been at it, you're welcome here.
discord.gg/artcraft · getartcraft.com · The Crafting Apps · WordCraft
License and credits
WordCraft is dual-licensed under MIT or Apache-2.0, at your option. Copyright (c) 2026 ArtCraft Team and the WordCraft contributors. Required notices are in NOTICE.
Bundled fonts, icons, images and other assets keep their own open licenses; each one is listed with its author, source and license in ATTRIBUTION.md.
The spelling dictionary and hyphenation come from Grady Ward's public-domain Moby Hyphenator II word list. The sample documents and templates are original text written for WordCraft.
The ArtCraft name, wordmark and logos in docs/brand/ are trademarks of the
ArtCraft Team and are not covered by this license. They may be used only unmodified, and only as
part of this repository and WordCraft, under docs/brand/LICENSE-brand.txt.
Forks and modified versions must remove them.
Microsoft and Microsoft Word are trademarks of the Microsoft group of companies. Adobe, Photoshop, Illustrator, Premiere Pro, Lightroom, Acrobat, After Effects and InDesign are trademarks or registered trademarks of Adobe Inc. in the United States and/or other countries. WordCraft is an independent, open-source project and is not affiliated with, sponsored by or endorsed by Microsoft Corporation or Adobe Inc.; these names are used only to describe the workflows it is compatible with.
Made by the ArtCraft team and community.