diff --git a/apps/docs/content/docs/en/files/editor.mdx b/apps/docs/content/docs/en/files/editor.mdx
new file mode 100644
index 00000000000..672797fd98a
--- /dev/null
+++ b/apps/docs/content/docs/en/files/editor.mdx
@@ -0,0 +1,56 @@
+---
+title: Editor
+description: A rich markdown editor for your files — type markdown and watch it render, or edit visually.
+pageType: concept
+---
+
+import { Image } from '@/components/ui/image'
+import { Card, Cards } from 'fumadocs-ui/components/card'
+import { Callout } from 'fumadocs-ui/components/callout'
+
+Every markdown file in your workspace opens in a **rich editor**. Type markdown and it renders as you go, or format visually with the toolbar and slash menu. What you see is exactly what gets saved — plain markdown underneath, no lock-in.
+
+
+
+
+
+## Formatting text
+
+Select any text to bring up the formatting toolbar — bold, italic, strikethrough, inline code, and links. The same marks appear instantly as you type the markdown for them, like `**bold**` or `*italic*`. Links show a hover card so you can open, copy, edit, or remove them without hunting through the source.
+
+## Structure
+
+Headings, blockquotes, and dividers keep long documents scannable. Type `# ` through `###### ` for headings, `> ` for a quote, and `---` for a divider.
+
+## Lists and checklists
+
+Bullet, ordered, and nested lists all work, plus task lists you can tick right in the document.
+
+## Tables
+
+Insert a table from the slash menu, then click any cell for the floating table toolbar — add or remove rows and columns, toggle the header row, or delete the table. Drag a column border to resize it.
+
+## Code blocks
+
+Fenced code blocks are syntax-highlighted, with a language picker in the corner. Pick `mermaid` to render a live diagram instead of code.
+
+## Images
+
+Paste or drag an image straight into the document, then drag a corner to resize it.
+
+## Slash menu and shortcuts
+
+Type `/` anywhere to insert any block — heading, list, table, code block, image, and more — without leaving the keyboard. Familiar shortcuts work too: **Cmd/Ctrl + B** for bold, **Cmd/Ctrl + I** for italic, and **Cmd/Ctrl + K** to add a link over selected text.
+
+## Markdown fidelity
+
+The editor round-trips your markdown exactly — it saves what you wrote, with no reformatting churn.
+
+
+A few constructs can't be represented visually without losing information on save — footnotes, raw HTML, and HTML comments. When a file contains one of these, it opens **read-only** so the original source is preserved untouched. Everything is still rendered faithfully; you just can't edit that file inline.
+
+
+
+
+
+
diff --git a/apps/docs/content/docs/en/meta.json b/apps/docs/content/docs/en/meta.json
index 5d11bb02c2a..69ddd2d5679 100644
--- a/apps/docs/content/docs/en/meta.json
+++ b/apps/docs/content/docs/en/meta.json
@@ -27,6 +27,7 @@
"./tables/workflow-columns",
"---Files---",
"./files/index",
+ "./files/editor",
"./files/using-in-workflows",
"./files/generating",
"./files/passing-files",
diff --git a/apps/docs/public/static/files/editor/overview.png b/apps/docs/public/static/files/editor/overview.png
new file mode 100644
index 00000000000..0f736b2eeff
Binary files /dev/null and b/apps/docs/public/static/files/editor/overview.png differ
diff --git a/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/markdown-paste.test.ts b/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/markdown-paste.test.ts
index 3311dd5ea52..789c2d8a60c 100644
--- a/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/markdown-paste.test.ts
+++ b/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/markdown-paste.test.ts
@@ -16,8 +16,8 @@ afterEach(() => {
editor = null
})
-function mount(): Editor {
- return new Editor({ extensions: [...createMarkdownContentExtensions(), MarkdownPaste] })
+function mount(editable = true): Editor {
+ return new Editor({ extensions: [...createMarkdownContentExtensions(), MarkdownPaste], editable })
}
/** Run the plugin paste handlers the way ProseMirror would, with a mocked clipboard. */
@@ -93,4 +93,61 @@ describe('markdown paste', () => {
expect(editor.isActive('codeBlock')).toBe(true)
expect(paste(editor, '[link](https://example.com)')).toBe(false)
})
+
+ it('rejects the paste entirely in a read-only editor', () => {
+ editor = mount(false)
+ expect(paste(editor, '# heading\n\n- one\n- two')).toBe(false)
+ expect(editor.getText()).toBe('')
+ })
+
+ it.each([
+ ['empty string', ''],
+ ['whitespace only', ' \n\n '],
+ ['a bare thematic break (ambiguous — needs another markdown signal)', '---'],
+ ['inline-only italic (single asterisk would false-positive on e.g. *args)', 'an *italic* word'],
+ ['inline-only strikethrough', 'a ~~struck~~ word'],
+ ['inline-only code', 'some `code` here'],
+ ])('leaves %s to the default handler', (_label, text) => {
+ editor = mount()
+ expect(paste(editor, text)).toBe(false)
+ })
+
+ // Only structural / unambiguous constructs gate the markdown parse. Inline-only marks that
+ // `looksLikeMarkdown` deliberately omits to avoid false positives — single-asterisk italic
+ // (`*args`), `~~`, single-backtick code — are covered by the Markdown extension's own paste path,
+ // not MarkdownPaste, so they belong to a different test surface.
+ it.each([
+ ['heading', '# Heading', 'heading'],
+ ['bold', 'a **bold** word', 'bold'],
+ ['bullet list', '- one\n- two', 'bulletList'],
+ ['ordered list', '1. one\n2. two', 'orderedList'],
+ ['task list', '- [x] done\n- [ ] todo', 'taskList'],
+ ['blockquote', '> a quote', 'blockquote'],
+ ['fenced code block', '```ts\nconst x = 1\n```', 'codeBlock'],
+ ['standalone image', '', 'image'],
+ ['thematic break within a document', '# Title\n\n---\n\nbody', 'horizontalRule'],
+ ])('renders pasted %s as rich content', (_label, md, nodeType) => {
+ editor = mount()
+ expect(paste(editor, md)).toBe(true)
+ expect(JSON.stringify(editor.getJSON())).toContain(`"type":"${nodeType}"`)
+ })
+
+ it('parses markdown-shaped plain text even when an HTML sibling is present', () => {
+ editor = mount()
+ const html = 'Title
'
+ expect(paste(editor, '# Title\n\n- a\n- b', html)).toBe(true)
+ const json = JSON.stringify(editor.getJSON())
+ expect(json).toContain('"type":"heading"')
+ expect(json).toContain('"type":"bulletList"')
+ expect(json).not.toContain('# Title')
+ })
+
+ it('preserves the structural blocks of a multi-block document, in order, on paste', () => {
+ editor = mount()
+ expect(paste(editor, '# Title\n\nA paragraph.\n\n- a\n- b\n\n> quote')).toBe(true)
+ const structural = (editor.getJSON().content ?? [])
+ .map((node) => node.type)
+ .filter((type) => type !== 'paragraph')
+ expect(structural).toEqual(['heading', 'bulletList', 'blockquote'])
+ })
})
diff --git a/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/rich-markdown-editor.css b/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/rich-markdown-editor.css
index 66a80d470f0..8c019c36f7c 100644
--- a/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/rich-markdown-editor.css
+++ b/apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/rich-markdown-editor.css
@@ -380,6 +380,15 @@
pointer-events: none;
}
+/*
+ * prosemirror-tables' column-resizing plugin toggles the `resize-cursor` class on the editor root
+ * while the pointer is over a column boundary; without this rule the handle shows but the cursor
+ * never changes to the resize affordance.
+ */
+.rich-markdown-prose.resize-cursor {
+ cursor: col-resize;
+}
+
.rich-markdown-prose p.is-editor-empty:first-child::before {
content: attr(data-placeholder);
color: var(--text-subtle);