WordCraft is an open-source word processor written in Rust, running here in a browser tab. It has the ribbon, styles, tables, track changes and references you know from Word, and it opens and saves .docx files. Your documents never leave your computer.
WordCraft follows Word’s ribbon tabs, groups and shortcuts: Enter continues a list, Tab demotes it, Ctrl/⌘+B bolds the word under the caret, F4 repeats, F7 checks spelling. Search for any command by name in the box at the top.
Turn on Track Changes and every insertion and deletion is marked with its author; accept or reject them one by one or all at once. Comments sit in balloons in the margin or in a pane. Spelling and simple grammar are checked as you type, offline.
Screenshot from the WordCraft project
A table of contents built from your headings, footnotes and endnotes, citations and a bibliography in APA, MLA, Chicago or IEEE style, captions, a table of figures, cross-references and an index.
Screenshot from the WordCraft project
The Styles gallery previews each style live as you point at it. Change the whole look with a theme or style set, set paragraph spacing, or add a watermark, page colour and page borders from the Design tab.
Screenshot from the WordCraft project
Margins, orientation, columns, section breaks, headers and footers, page numbers, drop caps, automatic hyphenation and line numbers. Pictures and shapes float with square, top-and-bottom, behind-text or in-front-of-text wrapping.
Screenshot from the WordCraft project
Start from a blank page, a letter, a résumé or a report. WordCraft opens and saves .docx, also reads and writes .odt, .rtf, .html, Markdown, LaTeX and plain text, opens old Word 97-2003 .doc files, and exports PDF.
Screenshot from the WordCraft projectOpen the AI panel next to the editor, paste an OpenAI, Google Gemini or OpenRouter key, and work on the document you just saved: summarize it, proofread it, rewrite it in another tone, translate it, or draft something new. Open the result in WordCraft with one click.
Requests go from your browser to the provider. We never see your key, your document or the results, and we add no markup.
How the AI assistant worksThe editor is the release web build, byte for byte. Around it we add a few things the bare build doesn’t have.
Each new WordCraft release is checked against its published SHA-256 checksum and deployed here. You are on v0.5.0.
Summaries, proofreading, rewrites, translations and drafts from OpenAI, Gemini or OpenRouter models, straight from the browser.
File › Save downloads your .docx as usual, and its text is ready in the AI panel at the same moment.
No account, no watermark, no upload. Close the tab and nothing of yours is left on a server.
WordCraft is in alpha. Expect rough edges, keep the original file, and save before closing the tab: the browser version has no autosave and doesn’t remember settings between visits. See opening a .docx without Word for the details.
Yes. The word processor is free and open source, with no account, no watermark and no document limit set by us. The optional AI writing assistant uses your own AI provider key, so any AI usage is billed by your provider, not by us.
No. WordCraft runs inside your browser with WebAssembly. Opening, editing and saving happen on your device: files open from your disk and save back as downloads. The only exception is the AI panel, which sends the document text you choose straight to the AI provider whose key you entered.
Usually close, not always identical. WordCraft is a clean-room reimplementation in alpha, and its developers say pagination still differs from Word’s in places and that .docx fidelity hasn’t yet been tested on a large set of real-world files. Charts and SmartArt are shown but can’t be edited. Keep the original of anything important.
Not in the browser. A web page can’t write to your files, so AutoSave is off and File › Save (Ctrl/⌘+S) downloads the document as a .docx. The browser asks before you leave the page with unsaved changes. The desktop app has AutoSave.
The browser version has the fonts built into WordCraft: Source Serif 4, Source Sans 3, Inter and JetBrains Mono, plus faces for Japanese, Chinese and Arabic. It can’t use the fonts installed on your computer, so a document set in another font is shown in a similar built-in one. The desktop app uses your installed fonts.
The interface follows your browser’s language when WordCraft has it: English, Simplified and Traditional Chinese, Japanese, Spanish, Brazilian Portuguese, Ukrainian, Serbian (Cyrillic and Latin) and Estonian. Right-to-left text such as Arabic and Persian is supported in documents. The built-in spelling checker is English.
A current Chrome, Edge, Firefox or Safari on a desktop or laptop. WordCraft draws with WebGPU and falls back to WebGL2 on its own. It runs on tablets and phones, but the ribbon is built for a keyboard and a big screen.
Not yet, and its developers say so. WordCraft is an independent open-source project in alpha. By their own estimate it covers 88% of Word’s ribbon features with commands and is about 60% of the way to replacing Word for real work. It is a good fit for writing, editing and reviewing everyday documents.
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