by WordPress Performance Team
3 (3 reviews)
Web Worker Offloading
Offloads select JavaScript execution to a Web Worker to reduce work on the main thread and improve the Interaction to Next Paint (INP) metric.
Compatible with WP 7.0
v0.2.1
Current Version v0.2.1
Updated 1 month ago
Last Update on 28 Feb, 2026
Refreshed 6 hours ago
Last Refreshed on
Rank
#1,339
—
No change
Active Installs
20K+
-16.9%
KW Avg Position
9.2
—
No change
Downloads
78.1K
+104 today
Support Resolved
0%
—
No change
Rating
60%
Review 3 out of 5
3
(3 reviews)
Next Milestone 30K
20K+
30K+
217
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro
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Rank Changes
Current
#1,339
Change
Best
#
Downloads Growth
Downloads
Growth
Peak
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3.0
3 reviews
Overall
60%
5
1
(33%)
4
0
(0%)
3
0
(0%)
2
2
(67%)
1
0
(0%)
Tracked Keywords
Showing 5 of 5| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| partytown | 1 | — | Tag | 1 month ago |
| web worker | 1 | — | Tag | 1 month ago |
| javascript | 4 | — | Tag | 1 month ago |
| analytics | 18 | — | Tag | 1 month ago |
| performance | 22 | — | Tag | 1 month ago |
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- Version
- 0.2.1
- Last Updated
- Feb 28, 2026
- Requires WP
- 6.6+
- Tested Up To
- 7.0
- PHP Version
- 7.2 or higher
- Author
- WordPress Performance Team
Support & Rating
- Rating
- ★ ★ ★ ☆ ☆ 3
- Reviews
- 3
- Support Threads
- 0
- Resolved
- 0%
Keywords
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Frequently Asked Questions
Common questions about Web Worker Offloading
If you find that your offloaded scripts aren't working while also seeing a 404 error in the console for a file at /wp-content/plugins/web-worker-offloading/build/partytown-sandbox-sw.html?1727389399791 then it's likely you have Chrome DevTools open with the "Bypass for Network" toggle enabled in the Application panel.
The Performance team and WordPress community take security bugs seriously. We appreciate your efforts to responsibly disclose your findings, and will make every effort to acknowledge your contributions. To report a security issue, please visit the WordPress HackerOne program.
Contributions are always welcome! Learn more about how to get involved in the Core Performance Team Handbook. The plugin source code is located in the WordPress/performance repo on GitHub.