Microsoft Edge 145 web platform release notes (Feb. 2026) (#3682) (#3683)

* New web platform release notes for 145

* Edit pass

* detailed contents

* writer/editor pass 1st half

* linkfix

* 2nd half writer editor pass

* del Entry todo's

* not This

* png-jpeg-in-bmp applies to edge

* Update site-impacting-changes

* update template

* addressed review comments

* escape html tag name

* Fix formatting

---------

Co-authored-by: captainbrosset <captainbrosset@users.noreply.github.com>
Co-authored-by: undefined <undefined@users.noreply.github.com>
Co-authored-by: Michael Hoffman <45407486+mikehoffms@users.noreply.github.com>

Author: 3 people

microsoft-edge/toc.yml

@@ -30,6 +30,10 @@
           href: ./web-platform/release-notes/index.md
           displayName: what's new, announcements
 
+        - name: Microsoft Edge 145
+          href: ./web-platform/release-notes/145.md
+          displayName: Microsoft Edge 145 web platform release notes (Feb. 2026)  # page title
+
         - name: Microsoft Edge 144
           href: ./web-platform/release-notes/144.md
           displayName: Microsoft Edge 144 web platform release notes (Jan. 2026)  # page title
@@ -66,13 +70,13 @@
           href: ./web-platform/release-notes/136.md
           displayName: Microsoft Edge 136 web platform release notes (May 2025)  # page title
 
-        - name: Microsoft Edge 135
-          href: ./web-platform/release-notes/135.md
-          displayName: Microsoft Edge 135 web platform release notes (Apr. 2025)  # page title
-
         # keep 10 items above
         - name: Archive
           items:
+            - name: Microsoft Edge 135
+              href: ./web-platform/release-notes/135.md
+              displayName: Microsoft Edge 135 web platform release notes (Apr. 2025)  # page title
+
             - name: Microsoft Edge 134
               href: ./web-platform/release-notes/134.md
               displayName: Microsoft Edge 134 web platform release notes (Mar. 2025)  # page title

microsoft-edge/web-platform/release-notes/143.md

@@ -147,7 +147,7 @@ Below are the new Web API features in Microsoft Edge.
 
 
 <!-- ---------- -->
-###### Allow more characters in JavaScript DOM APIs
+#### Allow more characters in JavaScript DOM APIs
 
 You can now create DOM elements and attributes with a wider variety of valid characters in JavaScript. This matches the behavior for when the same elements and attributes are defined in HTML markup.
 

microsoft-edge/web-platform/release-notes/144.md

@@ -5,13 +5,9 @@ author: MSEdgeTeam
 ms.author: msedgedevrel
 ms.topic: article
 ms.service: microsoft-edge
-ms.date: 01/08/2026
+ms.date: 01/15/2026
 ---
 # Microsoft Edge 144 web platform release notes (Jan. 2026)
-<!-- todo: update date: field to:
-ms.date: 01/15/2026
-per build report, must be < 30 days in future
--->
 
 The following are the new web platform features and updates in Microsoft Edge 144, which releases on January 15, 2026.
 
@@ -31,13 +27,11 @@ To stay up-to-date and get the latest web platform features, download a preview
 * [Web APIs](#web-apis)
   * [The Temporal API](#the-temporal-api)
   * [The clipboardchange event](#the-clipboardchange-event)
-  * [IDNA ContextJ rules](#idna-contextj-rules)
   * [The variants accessor property of Intl.Locale](#the-variants-accessor-property-of-intllocale)
   * [Mirroring of MathML operators in right-to-left mode](#mirroring-of-mathml-operators-in-right-to-left-mode)
   * [Performance API interactionCount property](#performance-api-interactioncount-property)
   * [The `maintain-framerate-and-resolution` value for the `RTCDegradationPreference` enum](#the-maintain-framerate-and-resolution-value-for-the-rtcdegradationpreference-enum)
   * [LayoutShift API reports rect elements in CSS pixels](#layoutshift-api-reports-rect-elements-in-css-pixels)
-  * [Browser Bound Keys in the Secure Payment Confirmation API](#browser-bound-keys-in-the-secure-payment-confirmation-api)
   * [Support for `ping`, `hreflang`, `type`, and `referrerPolicy` for SVG `<a>` elements](#support-for-ping-hreflang-type-and-referrerpolicy-for-svg-a-elements)
   * [Exception on History API pushState and replaceState throttling](#exception-on-history-api-pushstate-and-replacestate-throttling)
   * [User-Agent Client Hints ch-ua-high-entropy-values permissions policy](#user-agent-client-hints-ch-ua-high-entropy-values-permissions-policy)
@@ -64,23 +58,25 @@ To stay up-to-date and get the latest web platform features, download a preview
 ## Edge DevTools
 
 See [What's New in Microsoft Edge DevTools](../../devtools/whats-new/whats-new.md).
-<!-- todo: when it exists in Jan 2026, use instead:
-See [What's new in DevTools (Microsoft Edge 144)](../../devtools/whats-new/2026/01/devtools-144.md).
+<!-- todo: when exists, use instead:
+See [What's new in DevTools (Microsoft Edge 144)](../../devtools/whats-new/144.md).
 -->
 
 
 <!-- ====================================================================== -->
 ## WebView2
 
 See [Release Notes for the WebView2 SDK](../../webview2/release-notes/index.md).
-<!-- todo: when exists in Jan 2026, use instead:
-For WebView2, see [1.0.n.n](../../webview2/release-notes/index.md#10nnnnnn) in _Release Notes for the WebView2 SDK_ (Jan 2026).
+<!-- todo: when exists, use instead:
+For WebView2, see [1.0.n.n](../../webview2/release-notes/index.md#10nnnnnn) (January nn, 2026) in _Release Notes for the WebView2 SDK_.
 -->
 
 
 <!-- ====================================================================== -->
 ## CSS features
 
+Below are the new Cascading Style Sheets (CSS) features in Microsoft Edge.
+
 
 <!-- ------------------------------ -->
 #### The `scrolled` feature for scroll-state container queries
@@ -181,6 +177,8 @@ See also:
 <!-- ====================================================================== -->
 ## Web APIs
 
+Below are the new Web API features in Microsoft Edge.
+
 
 <!-- ------------------------------ -->
 #### The Temporal API
@@ -202,17 +200,6 @@ See also:
 * [Test the clipboardchange event—a more efficient way to monitor the clipboard](https://developer.chrome.com/blog/clipboardchange).
 
 
-<!-- ------------------------------ -->
-#### IDNA ContextJ rules
-
-To improve interoperability with other browsers, Microsoft Edge now implements the IDNA ContextJ rules, by disallowing ZWNJ (U+200C ZERO WIDTH NON-JOINER) and ZWJ (U+200D ZERO WIDTH JOINER) characters in most places within URLs.
-
-IDNA is the mechanism by which non-ASCII characters can occur in domain names.  For example, the URL `http://네이버.한국/` is encoded as `http://xn--950bt9s8xi.xn--3e0b707e/`.
-
-See also:
-* [Better Unicode support](./143.md#better-unicode-support) in _Microsoft Edge 143 web platform release notes (Dec. 2025)_.
-
-
 <!-- ------------------------------ -->
 #### The `variants` accessor property of `Intl.Locale`
 
@@ -281,18 +268,6 @@ See also:
 * [LayoutShiftAttribution](https://developer.mozilla.org/docs/Web/API/LayoutShiftAttribution) at MDN.
 
 
-<!-- ------------------------------ -->
-#### Browser Bound Keys in the Secure Payment Confirmation API
-
-The Secure Payment Confirmation API can now keep up with syncing passkeys and device requirements for online payments.  The Browser Bound Keys feature adds device binding in the browser, to enable payment scenarios in which device binding is required.
-
-This feature helps meet requirements for device binding for payment transactions.
-
-See also:
-* [Using Secure Payment Confirmation](https://developer.mozilla.org/docs/Web/API/Payment_Request_API/Using_secure_payment_confirmation) at MDN.
-* [Browser Bound Key Store](https://w3c.github.io/secure-payment-confirmation/#sctn-browser-bound-key-store) in _Secure Payment Confirmation_.
-
-
 <!-- ------------------------------ -->
 #### Support for `ping`, `hreflang`, `type`, and `referrerPolicy` for SVG `<a>` elements