Temporarily unblock CORS for development and testing purposes
Users
20K
0 in 30 days
Rating
4.2 / 5
unchanged in 30 days
Ratings
19
0 in 30 days
Store rank
#6,288
#5,436 among extensions
Version
1.4
updated 12 Jun 2026
Users
monthly, 2 years
Latest, 15 Oct 2026:20,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 years
Latest, 15 Oct 2026:19 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About CORS Unblock
CORS Unblock – Disable CORS for Development & Testing
The easiest way to disable CORS restrictions in Chrome during local
development and API testing. Toggle CORS off instantly with one click,
a keyboard shortcut, or a right-click — no browser restart, no
command-line flags needed.
KEY FEATURES:
- One-click toggle to enable/disable CORS bypass
- Keyboard shortcut: Alt+Shift+C (Option+Shift+C on Mac)
- Right-click the extension icon to toggle without opening the popup
- Toolbar icon and badge show live status — green (unblocked) or grey (blocking active)
- State persists across page reloads until you turn it off
- Auto turn-off when browser closes — never accidentally leave it on
- Supports localhost and private network requests (192.168.x.x etc.)
- Exposes response headers so JS can read them after unblocking
- Built-in security reminder so you never forget to turn it off
BUILT FOR DEVELOPERS
Perfect for frontend developers, QA engineers, and API testers working
with cross-origin requests during local development, staging, or
debugging sessions.
USE RESPONSIBLY
Disabling CORS bypasses an important browser security mechanism. Only
use on trusted sites and always turn it off when done. The auto
turn-off on browser close ensures you're never left exposed.
Completely free. No ads. No data collection.
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https://jsonvalidator.onrender.com
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
0
+0.0%
0
0.00
6 months
0
+0.0%
+3
−0.60
1 year
+10K
+100.0%
+8
−0.79
Chrome Web Store search rankings
Where CORS Unblock appears when people search the store, with the 30 day change