tweak - browser extension

tweak can help the whole team

What can I do with tweak?

Demo a product

Demonstrate a new product feature that uses data that is currently missing in the system.

Reproduce scenarios and edge cases

Reproduce web application scenario triggered by specific data that rarely happens, or it’s extremely difficult to reproduce.

Work on the Front End while APIs are not ready

Forget about the frustration of waiting for Back End changes. Test it yourself in a clean and non intrusive way!

When turning it off and on didn't work

Learn how to use tweak

Need more help? Take a look at the

FAQs

Will this work in every web application?

No. tweak has its own limitations, currently:

Is not able to intercept requests that are triggered at the page load. The problem is that the requests might be fired before the extension loads in the web page. This is a race condition we are putting a lot of effort to solve.
It cannot intercept data received through WebSockets.
It will only apply the configurations to the browser tab where you configure the requests to intercept and activate the extension (by clicking the run button).
In case you refresh the page of the website while the extension is active the extension will need a manual reset, you'll need to click on the STOP button and then again click on the RUN button in order to the extension to be able to intercept requests again.

Is tweak interfering with other web applications?

tweak uses Window.postMessage API to communicate between web pages and the extension. Leaving tweak turned on (running mode) might interfere with the runtime of the website. It is a good practice to keep tweak paused and only turn it on when you are using it.

I setup everything, but no requests are being intercepted.

Have you tried to turn it off and on? 🤞 Please refer to the question "Will this work in every web application?" to understand tweak limitations. Another important aspect on the request URL matching expression that might be easy to miss, is that sometimes we perform requests to the same domain, thus we do not have the domain present in the request URL, we simply write the path. In those cases, if you specify the full URL in the tweak configuration the request will be a mismatch and will not be intercepted.

Will tweak ever be available for Mozilla Firefox?

Perhaps. There are no plans to do so at the moment, we might add it if there's a high number of requests.

Any thoughts on having a tailored support for GraphQL?

We're seriously considering having something in the extension very tailored to GraphQL to intercept request that interact with GraphQL servers. Send us an email to help.tweak@gmail.com expressing your interest.

Is there any detailed step by step guide where I can learn how to use tweak?

Glad you asked. We drafted a very detailed documentation page for you.

Get In Touch

Did you find a bug that is bothering you? Do you have any idea on how we could make tweak even more useful? Drop us a line at help.tweak@gmail.com!

About us

Daniel Caldas

Coding stuff

Software Engineer that is into JavaScript, traveling, rice, and learning how to cook codfish in several number of different ways. He writes about JavaScript and software development related topics in his blog goodguydaniel.com.

Elisa Monacchi

A bit of here and there

Product Manager geeking around Design and Software Development. Passionate about travelling, food and documentaries. In her free time, she fights against people that add weird stuff on pizza and other italian dishes.

tweak your HTTP requests