diff --git a/docz/docs/03-demos/04-grid.md b/docz/docs/03-demos/04-grid.md
index 470030c..e65f544 100644
--- a/docz/docs/03-demos/04-grid.md
+++ b/docz/docs/03-demos/04-grid.md
@@ -202,7 +202,7 @@ many additional features including massive data streaming, sorting and styling.
 
 ### Tabulator
 
-[Tabulator](http://tabulator.info/docs/5.3/download#xlsx) includes deep support
+[Tabulator](https://tabulator.info/docs/5.4/download#xlsx) includes deep support
 through a special Export button.  It handles the SheetJS operations internally.
 
 
diff --git a/docz/docs/03-demos/07-worker.md b/docz/docs/03-demos/07-worker.md
index 5d1f50d..43aa263 100644
--- a/docz/docs/03-demos/07-worker.md
+++ b/docz/docs/03-demos/07-worker.md
@@ -100,7 +100,8 @@ In the following example, the script:
 
 - generates a workbook object in the Web Worker
 - generates a XLSB file using `XLSX.write` in the Web Worker
-- sends the file (`Uint8Array`) to the main browser context
+- generates an object URL in the Web Worker
+- sends the object URL to the main browser context
 - performs a download action in the main browser context
 
 ```jsx live
@@ -124,11 +125,14 @@ SheetJS,in,Web,Workers
 1,2,3,4\`;
     const wb = XLSX.read(csv, { type: "string" });
 
-    /* Write XLSB data */
+    /* Write XLSB data (Uint8Array) */
     const u8 = XLSX.write(wb, { bookType: "xlsb", type: "buffer" });
 
+    /* Generate URL */
+    const url = URL.createObjectURL(new Blob([u8]));
+
     /* Reply with result */
-    postMessage({data: u8});
+    postMessage({ url });
   } catch(e) {
     /* Pass the error message back */
     postMessage({error: String(e.message || e).bold() });
@@ -142,7 +146,7 @@ SheetJS,in,Web,Workers
         /* this mantra is the standard HTML5 download attribute technique */
         const a = document.createElement("a");
         a.download = "SheetJSWriteFileWorker.xlsb";
-        a.href = URL.createObjectURL(new Blob([e.data.data]));
+        a.href = e.data.url;
         document.body.appendChild(a);
         a.click();
         document.body.removeChild(a);
@@ -176,10 +180,10 @@ In the following example, the script:
 ```jsx live
 function SheetJSDragDropWorker() {
   const [html, setHTML] = React.useState("");
-  /* suppress default behavior for dragover and drop */
+  /* suppress default behavior for drag and drop */
   function suppress(e) { e.stopPropagation(); e.preventDefault(); }
   return ( <>
-    <div onDragOver={suppress} onDrop={(e) => {
+    <div onDragOver={suppress} onDragEnter={suppress} onDrop={(e) => {
       suppress(e);
 
       /* this mantra embeds the worker source in the function */
@@ -188,7 +192,7 @@ function SheetJSDragDropWorker() {
 importScripts("https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js");
 
 /* this callback will run once the main context sends a message */
-self.addEventListener('message', async(e) => {
+self.addEventListener('message', (e) => {
   try {
     /* Read file data */
     const ab = new FileReaderSync().readAsArrayBuffer(e.data.file);
diff --git a/docz/docs/03-demos/33-localfile.md b/docz/docs/03-demos/33-localfile.md
index 6e11b9f..6f7004f 100644
--- a/docz/docs/03-demos/33-localfile.md
+++ b/docz/docs/03-demos/33-localfile.md
@@ -2,10 +2,11 @@
 title: Local File Access
 ---
 
-Reading and writing files require native support.  `readFile` and `writeFile`
-include support for some approaches but do not support every API.  When an API
-is not supported by `readFile` or `writeFile`, the underlying `read` and
-`write` methods can be used.
+Reading and writing files require native platform support.  `XLSX.readFile` and
+`XLSX.writeFile` include support for some APIs.
+
+For other APIs, user code can pass data to `XLSX.read` or use data generated by
+`XLSX.write` directly.  Both methods work with a number of common storage types.
 
 This demo looks at various web APIs.  More specific approaches for deployments
 like mobile apps are covered in their respective demos.
@@ -35,20 +36,63 @@ Modern browser APIs typically use typed arrays or `Blob` or `File` structures.
 
 _Reading Binary Data_
 
-Given a `Blob` or `File`, the underlying data cannot be read synchronously!
+`XLSX.read` supports `Uint8Array` and `ArrayBuffer` data.  For `Blob` or `File`
+objects, the underlying data must be pulled into an `ArrayBuffer`.
 
 The callback-based approach uses a `FileReader`:
 
 ```js
-const reader = new FileReader();
-reader.onload = function(e) {
-  /* e.target.result is an ArrayBuffer */
-  const wb = XLSX.read(e.target.result);
-  console.log(XLSX.utils.sheet_to_csv(wb.Sheets[wb.SheetNames[0]]));
+// usage: file_to_wb(file, function(wb) { /* wb is a workbook object */ });
+function file_to_wb(file, callback) {
+  var reader = new FileReader();
+  reader.onload = function(e) {
+    /* e.target.result is an ArrayBuffer */
+    callback(XLSX.read(e.target.result));
+  };
+  reader.readAsArrayBuffer(file);
 }
-reader.readAsArrayBuffer(file);
 ```
 
+<details><summary><b>FileReaderSync in Web Workers</b> (click to show)</summary>
+
+`FileReaderSync` is only available in Web Workers:
+
+```js
+// assuming main thread called worker.postMessage({ file: file_object })
+self.addEventListener('message', (e) => {
+  /* get file object from message */
+  var file = e.data.file;
+  /* Read file data */
+  const ab = new FileReaderSync().readAsArrayBuffer(file);
+  /* Parse file */
+  const wb = XLSX.read(ab);
+  /* DO SOMETHING WITH wb HERE */
+});
+```
+
+["User-Submitted File" example](./worker#user-submitted-file) has a live demo.
+
+</details>
+
+<details><summary><b>IE10 Binary Strings</b> (click to show)</summary>
+
+In IE10, binary strings are more performant than `ArrayBuffer`. `XLSX.read`
+supports binary strings with `type: "binary"`:
+
+```js
+// usage: file_bs_to_wb(file, function(wb) { /* wb is a workbook object */ });
+function file_bs_to_wb(file, callback) {
+  var reader = new FileReader();
+  reader.onload = function(e) {
+    /* e.target.result is a binary string */
+    callback(XLSX.read(e.target.result, { type: "binary" }));
+  };
+  reader.readAsBinaryString(file);
+}
+```
+
+</details>
+
 The Promise-based approach uses `Blob#arrayBuffer`:
 
 ```js
@@ -60,8 +104,9 @@ async function blob_to_wb(blob) {
 
 _Writing Binary Data_
 
-`XLSX.write` can generate `Uint8Array` results by passing `type: "buffer"`.  A
-`Blob` can be created by using the constructor:
+`XLSX.write` can generate `Uint8Array` results by passing `type: "buffer"`.
+
+A `Blob` can be created by using the constructor:
 
 ```js
 const u8 = XLSX.write(workbook, { type: "buffer", bookType: "xlsx" });
@@ -78,6 +123,17 @@ _Writing Files_
 XLSX.writeFile(wb, "SheetJS.xlsx");
 ```
 
+:::caution Web Workers
+
+`XLSX.writeFile` requires DOM access and will not work in a Web Worker!
+
+The workaround is to generate the file data from the Worker (using `XLSX.write`)
+and send the data back to the main context for the actual download action.
+
+["Creating a Local File" includes a live demo](./worker#creating-a-local-file).
+
+:::
+
 ## File API
 
 _Reading Files_
@@ -93,7 +149,7 @@ async function handleFileAsync(e) {
   /* data is an ArrayBuffer */
   const workbook = XLSX.read(data);
   /* do something with the workbook here */
-  console.log(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]))
+  console.log(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]));
 }
 input_dom_element.addEventListener("change", handleFileAsync, false);
 ```
@@ -105,8 +161,12 @@ _Reading Files_
 The `dataTransfer` property of the `drop` event holds a list of files:
 
 ```js
+/* suppress default behavior for drag and drop events */
+function suppress(e) { e.stopPropagation(); e.preventDefault(); }
+
+/* handle data from drop event */
 async function handleDropAsync(e) {
-  e.stopPropagation(); e.preventDefault();
+  suppress(e);
   /* get first file */
   const f = e.dataTransfer.files[0];
   /* get raw data */
@@ -114,9 +174,12 @@ async function handleDropAsync(e) {
   /* data is an ArrayBuffer */
   const wb = XLSX.read(data);
   /* do something with the workbook here */
-  console.log(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]))
+  console.log(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]));
 }
+
 drop_dom_element.addEventListener("drop", handleDropAsync, false);
+drop_dom_element.addEventListener("dragover", suppress, false);
+drop_dom_element.addEventListener("dragenter", suppress, false);
 ```
 
 ## File System Access API
@@ -128,6 +191,45 @@ the feature in version 86.  Safari did not support File System Access API.
 
 :::
 
+<details><summary><b>Live Example</b> (click to show) </summary>
+
+This live example reads a file then tries to save as XLSX.
+
+```jsx live
+function SheetJSRoundTripFileSystemAPI() { return ( <button onClick={async () => {
+  /* Show picker and get data */
+  const [rFile] = await window.showOpenFilePicker({
+    types: [{
+      description: 'Spreadsheets',
+      accept: { 'application/vnd.ms-excel': ['.xlsx', '.xls', '.xlsb', /*...*/] }
+    }],
+    excludeAcceptAllOption: true,
+    multiple: false
+  });
+  const ab = await (await rFile.getFile()).arrayBuffer();
+
+  /* parse */
+  const wb = XLSX.read(ab);
+
+  /* Show picker and get handle to file */
+  const wFile = await window.showSaveFilePicker({
+    suggestedName: "SheetJSRT.xlsx",
+    types: [ { description: 'XLSX', accept: { 'application/vnd.ms-excel': ['.xlsx'] } } ]
+  });
+  const wstream = await wFile.createWritable();
+
+  /* write */
+  const buf = XLSX.write(wb, { bookType: "xlsx", type: "buffer" });
+  wstream.write(buf);
+
+  /* close stream to commit file */
+  wstream.close();
+
+}}>Click to read then save as XLSX</button> ) }
+```
+
+</details>
+
 _Reading Files_
 
 `window.showOpenFilePicker` shows a file picker and resolves to an array of
@@ -182,47 +284,6 @@ wstream.write(XLSX.write(wb, { bookType: ext, type: "buffer" }))
 wstream.close();
 ```
 
-### Demo
-
-<details><summary><b>Live Example</b> (click to show) </summary>
-
-This live example reads a file then tries to save as XLSX.
-
-```jsx live
-function SheetJSRoundTripFileSystemAPI() { return ( <button onClick={async () => {
-  /* Show picker and get data */
-  const [rFile] = await window.showOpenFilePicker({
-    types: [{
-      description: 'Spreadsheets',
-      accept: { 'application/vnd.ms-excel': ['.xlsx', '.xls', '.xlsb', /*...*/] }
-    }],
-    excludeAcceptAllOption: true,
-    multiple: false
-  });
-  const ab = await (await rFile.getFile()).arrayBuffer();
-
-  /* parse */
-  const wb = XLSX.read(ab);
-
-  /* Show picker and get handle to file */
-  const wFile = await window.showSaveFilePicker({
-    suggestedName: "SheetJSRT.xlsx",
-    types: [ { description: 'XLSX', accept: { 'application/vnd.ms-excel': ['.xlsx'] } } ]
-  });
-  const wstream = await wFile.createWritable();
-
-  /* write */
-  const buf = XLSX.write(wb, { bookType: "xlsx", type: "buffer" });
-  wstream.write(buf);
-
-  /* close stream to commit file */
-  wstream.close();
-
-}}>Click to read then save as XLSX</button> ) }
-```
-
-</details>
-
 ## File and Directory Entries API
 
 :::caution Deprecated
@@ -263,7 +324,8 @@ Internet Explorer offered proprietary APIs that were not adopted by Chromium.
 
 _Writing Files_
 
-IE10 and IE11 support `navigator.msSaveBlob`. `writeFile` will use the method.
+IE10 and IE11 support `navigator.msSaveBlob`. `XLSX.writeFile` will use this
+method if it is available.
 
 #### VBScript
 
@@ -304,8 +366,8 @@ import { readFile, writeFile, set_fs } from 'xlsx';
 import * as fs from 'fs';
 set_fs(fs);
 
-var wb = XLSX.readFile("sheetjs.numbers");
-XLSX.writeFile(wb, "sheetjs.xlsx");
+var wb = readFile("sheetjs.numbers");
+writeFile(wb, "sheetjs.xlsx");
 ```
 
 ### ExtendScript
@@ -322,8 +384,7 @@ XLSX.writeFile(wb, "sheetjs.csv");
 
 ### Deno
 
-`Deno.readFileSync` and `Deno.writeFileSync` are supported by `readFile` and
-`writeFile` out of the box:
+`readFile` uses `Deno.readFileSync` and `writeFile` uses `Deno.writeFileSync`:
 
 ```js
 // @deno-types="https://cdn.sheetjs.com/xlsx-latest/package/types/index.d.ts"
@@ -333,11 +394,11 @@ const wb = XLSX.readFile("sheetjs.numbers");
 XLSX.writeFile(wb, "sheetjs.xlsx");
 ```
 
-:::note
+:::caution Deno entitlements
 
-Any script using `XLSX.readFile` requires the `--allow-read` permission.
+Any Deno script using `XLSX.readFile` requires the `--allow-read` entitlement.
 
-Any script using `XLSX.writeFile` requires the `--allow-write` permission.
+Any Deno script using `XLSX.writeFile` requires the `--allow-write` entitlement.
 
 :::
 
@@ -346,12 +407,12 @@ Any script using `XLSX.writeFile` requires the `--allow-write` permission.
 Bun requires the `fs` module:
 
 ```js
-import * as XLSX from 'xlsx';
+import { readFile, writeFile, set_fs } from 'xlsx';
 import * as fs from 'fs';
-XLSX.set_fs(fs);
+set_fs(fs);
 
-var wb = XLSX.readFile("sheetjs.numbers");
-XLSX.writeFile(wb, "sheetjs.xlsx");
+var wb = readFile("sheetjs.numbers");
+writeFile(wb, "sheetjs.xlsx");
 ```
 
 ### Apps