---
title: Safari Technology Preview 54 Release Notes
framework: safari-technology-preview-release-notes
role: article
role_heading: Article
path: safari-technology-preview-release-notes/stp-release-54
---

# Safari Technology Preview 54 Release Notes

Preview the latest web technology updates including: Clipboard API, Beacon API, Web API, WebRTC, and Web Inspector.

## Overview

Overview Safari Technology Preview Release 54 is now available for download for macOS Sierra and macOS High Sierra. If you already have Safari Technology Preview installed, you can update from the Mac App Store’s Updates tab. This release covers WebKit revisions 230029-230521. Clipboard API Fixed copying a list from Microsoft Word to TinyMCE when mso-list is the first property (r230120) Prioritized file promises over filenames during drag and drop (r230221) Beacon API Fixed Beacon redirect responses to be CORS validated (r230495) Web API Implemented createImageBitmap(Blob) (r230350) WebRTC Added a special software encoder mode when a compression session is not using a hardware encoder and VCP is not active (r230451) Added experimental support for MDNS ICE candidates in WebRTC data channel peer-to-peer connections (r230290, r230307) Web Inspector Fixed the errors glyph to fully change to blue when active (r230372) Tinted all pixels drawn by a shader program when hovering over a tree element in the Canvas Tab (r230127)

## See Also

### 2018

- [Safari Technology Preview 72 Release Notes](safari-technology-preview-release-notes/stp-release-72.md)
- [Safari Technology Preview 71 Release Notes](safari-technology-preview-release-notes/stp-release-71.md)
- [Safari Technology Preview 70 Release Notes](safari-technology-preview-release-notes/stp-release-70.md)
- [Safari Technology Preview 69 Release Notes](safari-technology-preview-release-notes/stp-release-69.md)
- [Safari Technology Preview 68 Release Notes](safari-technology-preview-release-notes/stp-release-68.md)
- [Safari Technology Preview 67 Release Notes](safari-technology-preview-release-notes/stp-release-67.md)
- [Safari Technology Preview 66 Release Notes](safari-technology-preview-release-notes/stp-release-66.md)
- [Safari Technology Preview 65 Release Notes](safari-technology-preview-release-notes/stp-release-65.md)
- [Safari Technology Preview 64 Release Notes](safari-technology-preview-release-notes/stp-release-64.md)
- [Safari Technology Preview 63 Release Notes](safari-technology-preview-release-notes/stp-release-63.md)
- [Safari Technology Preview 62 Release Notes](safari-technology-preview-release-notes/stp-release-62.md)
- [Safari Technology Preview 61 Release Notes](safari-technology-preview-release-notes/stp-release-61.md)
- [Safari Technology Preview 60 Release Notes](safari-technology-preview-release-notes/stp-release-60.md)
- [Safari Technology Preview 59 Release Notes](safari-technology-preview-release-notes/stp-release-59.md)
- [Safari Technology Preview 58 Release Notes](safari-technology-preview-release-notes/stp-release-58.md)