diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3c4d896..741f30b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,20 @@ jobs:
     steps:
 
       - name: Check Out Sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+
+      - name: Check Out CRX3-Creator
+        uses: actions/checkout@v4
+        with:
+          repository: ${{ format( '{0}/CRX3-Creator', github.repository_owner ) }}
+          ref: 'a5d25b6ccc2007be41bd9cc534dfa51a52692780'
+          path: 'crx3-creator'
+
+      - name: Install Additional Software
+        run: |
+          # required for CRX3-Creator
+          sudo apt-get install python3-googleapi
+          sudo apt-get install python3-protobuf
 
       - name: Determine Some Strings from Tag
         run: |
@@ -35,26 +48,34 @@ jobs:
           fi
 
           # determine v-prefixed version, simple version,
-          # extension version, XPI base name and export them
+          # extension version, XPI base name, CRX base name and
+          # export them
           vversion=$tagname
           sversion=${tagname#v}
           [[ $tagname =~ ^v(2\.[0-9]+)(\.[0-9]+)?$ ]]
           xversion=${BASH_REMATCH[1]}
           xpibname="copy-on-select-2-unsigned-$sversion.xpi"
+          crxbname="copy-on-select-2-$sversion.crx"
           echo "vversion=$vversion" >> $GITHUB_ENV
           echo "sversion=$sversion" >> $GITHUB_ENV
           echo "xversion=$xversion" >> $GITHUB_ENV
           echo "xpibname=$xpibname" >> $GITHUB_ENV
+          echo "crxbname=$crxbname" >> $GITHUB_ENV
 
         # ensure the new version is maintained in the extension
         # manifest
       - name: Verify Manifest
         run: |
           mversion=$( jq -r '.version' src/manifest.json )
-          if [[ $xversion != $mversion ]]; then
+          if [[ $xversion != "$mversion" ]]; then
             echo "Cannot find version \"$xversion\" in manifest." 1>&2
             exit 1
           fi
+          mfversion=$( jq -r '.manifest_version' src/manifest.json )
+          if [[ $mfversion != 2 ]]; then
+            echo "Cannot process manifest version $mfversion." 1>&2
+            exit 1
+          fi
 
         # ensure the new version is described in the version
         # history and use its description as release description
@@ -97,12 +118,23 @@ jobs:
           mkdir -p build
           zip -jqr "build/$xpibname" src
 
-      - name: Create Release and Upload XPI
+      - name: Create CRX
+        env:
+          CRX_PEM: ${{ secrets.CRX_PEM }}
+        run: |
+          mkdir -p build tmp
+          jq '.manifest_version = 3' src/manifest.json > tmp/manifest.json
+          mv tmp/manifest.json src/manifest.json
+          printf '%s\n' "$CRX_PEM" > tmp/crx.pem
+          python3 crx3-creator/main.py -o "build/$crxbname" \
+                                       -pem tmp/crx.pem src
+
+      - name: Create Release and Upload Packages
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           draft=""
-          if [[ $sversion != $xversion ]]; then
+          if [[ $sversion != "$xversion" ]]; then
             draft="--draft"
           else
             draft=""
@@ -111,4 +143,5 @@ jobs:
           gh release create $draft              \
              --title "Version $sversion"        \
              --notes-file tmp/reldesc.md        \
-             "$vversion" "build/$xpibname"
+             "$vversion" "build/$xpibname"      \
+                         "build/$crxbname"
diff --git a/README.md b/README.md
index f517f17..7d8f3fa 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,26 @@ is
 
   [![Firefox Latest](https://img.shields.io/amo/v/copy-on-select-2)][link-amo]
 
+- Chromium-based browsers (Brave, Ungoogled Chromium)
+
+  Download the latest CRX package from the [release
+  page](https://github.com/farblos/copy-on-select-2/releases) and
+  drag-and-drop it onto your browser or open it as a file with
+  `Ctrl+O`.
+
+## Known Issues
+
+Version 2.6
+
+- Option "Copy-on-select in input elements" is not effective on
+  chromium-based browsers.  In the sense that on these you cannot
+  *disable* copy-on-select in input elements.
+
+  The same is true for non-standard input fields on all browsers,
+  see ["pontoon.mozilla.org" input form problem][issue_12].
+
+[issue_12]: https://github.com/farblos/copy-on-select-2/issues/12
+
 <!--
   == Keep GitHub workflow release.yml in sync with the format of
   == the section below.
@@ -62,6 +82,15 @@ is
 
 ## Version History
 
+Version 2.6
+
+- Implements RFE [Version for chromium web browsers][issue_10].
+
+  Polyfills missing APIs.  Adds release steps to create an MV3,
+  CRX3 package (while leaving MV2 for the Firefox XPI).
+
+[issue_10]: https://github.com/farblos/copy-on-select-2/issues/10
+
 Version 2.5
 
 - Fixes issue [Does not work on local web pages in htmlz format][issue_8].
diff --git a/src/copy-on-select.js b/src/copy-on-select.js
index cfde500..891934a 100644
--- a/src/copy-on-select.js
+++ b/src/copy-on-select.js
@@ -1,5 +1,10 @@
 "use strict";
 
+// polyfill the "browser" global for chromium compatibility
+if ( (typeof globalThis.browser === "undefined") &&
+     (typeof globalThis.chrome  !== "undefined") )
+  globalThis.browser = chrome;
+
 var CopyOnSelect = {
 
   // options
@@ -48,7 +53,12 @@ var CopyOnSelect = {
     else if ( (s.length > 0) )
       this.copy( s );
 
-    // copy selection on input element
+    // copy selection on input element.  Chromium-based browsers
+    // do not handle selections in input elements differently
+    // from regular selections.  Accordingly, on these browsers
+    // we do not reach this branch when text from an input
+    // element is selected, and user option "in_input_elements"
+    // is not effective.
     else if ( (this.in_input_elements) &&
               (t === document.activeElement) &&
               (typeof t.value          === "string") &&
diff --git a/src/manifest.json b/src/manifest.json
index 477b5d3..9c33dfd 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -3,7 +3,7 @@
   "description": "A productivity tool which copies selected text to the clipboard automatically.",
   "homepage_url": "https://github.com/farblos/copy-on-select-2",
 
-  "version": "2.5",
+  "version": "2.6",
 
   "icons": {
     "128": "copy-on-select-128.png"
@@ -28,8 +28,7 @@
   ],
 
   "options_ui": {
-    "page": "options.html",
-    "browser_style": true
+    "page": "options.html"
   },
 
   "manifest_version": 2
diff --git a/src/options.js b/src/options.js
index c516126..bbccb79 100644
--- a/src/options.js
+++ b/src/options.js
@@ -1,5 +1,10 @@
 "use strict";
 
+// polyfill the "browser" global for chromium compatibility
+if ( (typeof globalThis.browser === "undefined") &&
+     (typeof globalThis.chrome  !== "undefined") )
+  globalThis.browser = chrome;
+
 async function load()
 {
   let o = await browser.storage.local.get();