diff --git a/README.md b/README.md
index c3a4916e..c817d957 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ would suggest that you upgrade to a browser that supports Service Workers (Chrom
 ### Officially supported platforms
 
 - <img src="images/firefoxbrowser-color.svg" width="20" /> Mozilla Firefox >=56 (as an extension): [Mozilla Add-ons Store](https://addons.mozilla.org/fr/firefox/addon/kiwix-offline/)
-    + Firefox 52-56 and ESR version 58: Limited support (jQuery mode only)
+    + Firefox 52-56 and ESR version 58: Limited support (Safe mode only)
 - Chromium / Chrome / Edge >= 88 (as a Manifest V3 extension):
     + <img src="images/googlechrome-color.svg" width="20" /> Google Chrome >=88: [Chrome Web Store](https://chrome.google.com/webstore/detail/kiwix/donaljnlmapmngakoipdmehbfcioahhk)
     + <img src="images/microsoftedge-color.svg" width="20" /> Microsoft Edge >=88: [Edge Add-ons Store](https://microsoftedge.microsoft.com/addons/detail/kiwix/jlepddlenlljlnnhjinfaciabanbnjbp)
@@ -79,8 +79,8 @@ These platforms/browsers are deprecated. We still partially test against them, a
 
 - Firefox OS >=1.2: needs to be installed manually on the device with WebIDE
 - Microsoft Edge Legacy >=17: no extension available, but bookmark https://browser-extension.kiwix.org or https://pwa.kiwix.org
-- Microsoft Edge Legacy 15-16: needs to run a bundled version of the source code in jQuery mode only
-- Microsoft Internet Explorer 11: needs to run a bundled version of the source code in jQuery mode only
+- Microsoft Edge Legacy 15-16: needs to run a bundled version of the source code in Safe mode only
+- Microsoft Internet Explorer 11: needs to run a bundled version of the source code in Safe mode only
 
 **_You can build a bundled version by running `npm install` and `npm run build` in the root directory of this repo._** Alternatively, a bundled version is served
 as a web app for testing from https://kiwix.github.io/kiwix-js/dist/ (also available on the `gh-pages` branch of this repo, under `/dist`). 
@@ -114,15 +114,18 @@ for security reasons. In both cases we offer a functional workaround (an offline
 - "ServiceWorkerLocal" mode is a restricted ServiceWorker mode that is available only in Chromium extensions running fully locally. Chromium
 extensions running locally block (by design) a lot of dynamic content such as inline JavaScript and `eval`, which means this mode won't work
 with some modern dynamic content, and in particular, it won't work with Zimit-based archives (if you open one of these in this mode, you
-will be thrown back to JQuery mode in order to view static content). However, this mode is useful if you cannot access the offline-first PWA,
+will be thrown back to Safe mode in order to view static content). However, this mode is useful if you cannot access the offline-first PWA,
 and should work with most official Kiwix ZIM archives;
-- "JQuery" mode (deprecated) parses the DOM to find the HTML tags of the dependencies and modifies them to point to content we extract from the ZIM.
-This mode is compatible with any browser, but it cannot run JavaScript inside the ZIM file, so ZIMs with dynamic content do not work well (if at all).
-If you open a dynamic (including Zimit) archive in this mode (or if you are thrown into the mode due to another incompatibility), then we will do our
-best to display static content, but much functionality is likely to be broken. However, Mediawiki-based content (e.g. Wikipedia) works fine in this mode.
+- "Safe" mode prevents running attached scripts in the iframe, and so is useful for checking the contents of a ZIM before deciding it is safe
+to run. This mode also works in browsers that do not support Service Workers. It parses the DOM to find the HTML tags of the dependencies and
+modifies them to point to content we extract from the ZIM. This mode is compatible with any browser, but becuase it cannot run JavaScript
+inside the ZIM file, does not work well (if at all) with ZIMs that depend on dynamic content. If you open a dynamic (including Zimit) archive
+in this mode (or if you are thrown into the mode due to another incompatibility), then we will do our best to display static content, but much
+functionality is likely to be broken. However, Mediawiki-based content (e.g. Wikipedia) works fine in this mode.
 
-You can switch between these content injection modes in Configuration, but if your browser supports ServiceWorker mode as an offline-first PWA, you are
-strongly advised to remain in this mode.
+You can switch between these content injection modes in Configuration, but if your browser supports ServiceWorker mode as an offline-first PWA,
+you are strongly advised to remain in this mode (unless you wish to check the safety of a ZIM before running it -- the UI will ask you if you
+wish to do this when you first open a new ZIM).
 
 ### File access and other limitations