Mock or modify your HTTP requests to test, develop and demo your web application
Users
80K
0 in 30 days
Rating
4.6 / 5
−0.06 in 30 days
Ratings
239
0 in 30 days
Store rank
#2,573
#2,258 among extensions
Version
9.4.0
updated 8 Oct 2026
Users
monthly, 3 years
Latest, 15 Oct 2026:80,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 years
Latest, 15 Oct 2026:239 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 tweak: mock and modify HTTP requests
tl;dr
tweak lets you mock and modify HTTP requests without leaving the browser
Mock 🆓
﹥ Mock response data, headers, status code and delay
﹥ Match requests by their JSON or form (x-www-form-urlencoded) body
﹥ Capture requests in the background and turn them into rules
﹥ Document your rules with markdown labels and notes
﹥ Export and import rules to share them with your team
Modify headers 🆓
﹥ Add, override, append or remove request and response headers
﹥ Apply them on every tab, or only on the tab you're testing
﹥ Works on every request: pages, scripts, images and API calls
﹥ Dynamic header values with templating
Redirect 🆓
﹥ Send requests to another url, such as API calls to localhost
﹥ Replace documents such as HTML/CSS/Images
Premium 💸
﹥ Modify live server responses and request payloads
﹥ Write custom JavaScript to change requests and responses
﹥ Organize your workspace with collections
﹥ Variables and environments: switch between dev, staging and prod in one click
﹥ Create mock data with random generators
﹥ Debug requests with breakpoints and logpoints
﹥ Narrow redirects to specific request types
Useful links 🔗
﹥Getting started https://tweak-extension.com/docs/intro
﹥FAQs https://tweak-extension.com/faqs
﹥Changelog https://tweak-extension.com/changelog
﹥Support help@tweak-extension.com
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
+1
−0.06
30 days
0
+0.0%
0
−0.06
6 months
+20K
+33.3%
+8
−0.08
1 year
+20K
+33.3%
+18
−0.10
Chrome Web Store search rankings
Where tweak: mock and modify HTTP requests appears when people search the store, with the 30 day change