tweak: mock and modify HTTP requests

Download / Install How to install an extension

CRX id

feahianecghpnipmhphmfgmpdodhcapi

Description from extension meta

Mock or modify your HTTP requests to test, develop and demo your web application

Image from store tweak: mock and modify HTTP requests

Description from store tl;dr tweak allows you to mock and modify HTTP requests without leaving the browser You can intercept requests/API calls and 🪄 ﹥ Modify ⁃ Response data and headers ⁃ Status code ⁃ Request payload 💸 ⁃ Request headers 💸 ﹥ Delay individual requests/API calls ﹥ Export and import rules to organize and share your configs with your team ﹥ Search requests in the background to import them automatically Premium 💸 ﹥ Modify the response data by writing custom JavaScript ﹥ Organize your workspace with collections ﹥ Change rules in bulk using global custom variables ﹥ Create mock data with random generators ﹥ Use tweak’s breakpoints and logpoints to debug requests/API calls What you CAN’T do with tweak 🚫 ﹥ Replace documents such as HTML/CSS/Images Useful links 🔗 ﹥Getting started https://tweak-extension.com/docs/intro ﹥FAQs https://tweak-extension.com/faqs ﹥Changelog https://tweak-extension.com/changelog ﹥Support [email protected]

Latest reviews

(2025-06-17) Eamonn Turley: Wanted it for testing resource delays, such as a CSS file being retrieved, but doesn't intercept any of them. Worked for an AJAX request that was started from clicking a button, so if that's what your after then seems OK.
(2025-05-28) Morgan Bonar: Doesnt work with OPTIONS calls. Doesn't capture them.
(2025-05-27) Isuru Madusanka: This is great
(2025-05-26) Daniel Quijada: Does what I expected and quickly. Amazing.
(2025-05-12) Ömer Faruk Meşebüken: It's works as you expected!
(2025-04-02) Stanislav Altgovzen: This incredible tool made my dev life so much easier! I don't need to ask for BE team for anything. I can mock whatever response I need.
(2025-03-12) Benjamin B: Great for mocking API responses! Does everything that I need it to as a developer!
(2025-03-10) Héctor Almeida: Super helpful and it just works!
(2025-02-20) Radha Madhav Das: Brilliant. Saved me a lot of time.
(2025-02-18) Andrei Ramanouski: Best tweaker ever
(2025-02-10) Hugo Guillin: Awesome extension
(2025-01-23) Rizal Hadiyansah: Great extension! Really help me a lot! But I wish it can work on multiple tabs
(2025-01-16) Sergey Pinchuk: Great extension which helps me a lot )
(2024-12-30) Duc Huy Le: Awesome extension. One of the best extensions
(2024-12-20) Jitendra Sabat: No words. It's a brilliant tool. Saved me a lot of time
(2024-12-17) bikramjit ganguly: Brilliant. Saved me a lot of time.
(2024-12-04) Vamshi Goud: Really useful tool for API Testing, I've been using this tool for 2+ years.
(2024-11-14) Omerson Cruz: Not able to try some features for free
(2024-11-13) Mbali: Easy to use, got everything hooked up in less than a minute!
(2024-10-31) Артём Муратов: very nice guys. Thank you
(2024-10-17) Vijay Prakash DWIVEDI: It is really cool and simple , it does what it does intuitively
(2024-10-16) zhengdao zhan: easy to use
(2024-10-08) Caio Tarnowski: Awesome
(2024-10-03) Igor Majic: Simple and straightforward.
(2024-10-01) Артур Газиев: 4/5 heres why! very easy to use! i like it. but!!! 1. you cant resize the main window, what the hell? 2. double scroll inside payload, omg!!! 3. its a disaster to work with it on touchpad
(2024-09-30) Sachin Ravanth: Ease of use
(2024-09-27) Przemysław Zając: Really good. works great !
(2024-09-26) Brannon Pagac: works very well. it has regex feature so I can work easily. it also can enable / disable mock for each request
(2024-09-24) Carlos Araujo: Exactly what I needed and works perfectly!! Thank you so much!
(2024-09-09) Vũ Long: Good extensions, it works perfectly for me
(2024-09-06) Yvan Zhu: the new version is a disaster, it will stop some request of website Mar 17, 2024 it will stop play http-flv live stream in some websites Sep 6, 2024
(2024-09-04) Nicoale Balica: really good for mocking stuff in a quick pin
(2024-08-30) jacky: work well, thanks
(2024-08-28) Dan Seethaler: This is a super simple and powerful tool! The UI does take a little getting used to and could be more intuitive, but once you figure it out it's gold!
(2024-08-07) Maria A.: seems great for modifying 200 responses, unfortunately setting status codes 404/422 etc caused Axios to detect them as network errors
(2024-07-26) Brunswick: There is an issue that xhr is pending until 5,000 milliseconds. It was hard to debug why my website loads TOO late.
(2024-07-17) Shahul Hamed Mohammed: Excellent mock plugin. simple and powerful
(2024-07-04) 张超: awesome tool
(2024-06-13) k k: easy to use and everything works well, very helpful, thanks
(2024-05-17) Jette Thrane: I was wondering how to test an http interceptor with retries, and StackOverflow pointed me here. Very nice tool. Thanks <3
(2024-05-07) Leo Gono: excellent development tool to mock api requests.
(2024-05-02) Reza: awesome tool
(2024-05-01) RXS REL: It's very awesome tool for bug reproducing on frontend. Thanks a lot Tweak !!!
(2024-04-26) D V: very simple and convinient app. tanx for it
(2024-04-17) Sean Pine: Works like a charm. I've used similar tools in the past that either didn't work or were flaky. Tweak delivers! Plus: great documentation.
(2024-04-16) Mohammed Siddeeq: Excellent. So simple, and it just works. Best I have ever used
(2024-04-05) Raphael Martins: This is a lifesaver!! Wonderful work and thank you for making this available
(2024-04-04) khaidar testing: Super usefull
(2024-03-19) Lakshitha Ruwan: Exactly what I wanted.
(2024-03-13) Volodymyr R: Wonderful. A real application that works with easy-to-understand features. I was able to mock a real response in a minute.

Statistics

Installs

50,000

Links

Extension in store

Web page

Developer e-mail