Inssman: Open-Source: Modify HTTP Request

Intercept HTTP(S) Request, Modify Headers, Log headers, Change Response, Block Request, Redirect, Custom HTML/CSS/JS/JSON

As of June 2026, Inssman: Open-Source: Modify HTTP Request has 5,000 users and a 4.13/5 rating from 15 reviews in the Developer Tools category.

Usersno change0%
5.0K
5,000
Ratingno change0%
4.13
15 reviews
Reviewsno change0%
15
Version
1.0.64
Manifest V3

History

1 snapshots

Tracking since May 3, 2026.

5.1K5.0K4.9KMay 3, 2026Jun 3, 2026
View as table
DateUsersRatingReviewsVersion
May 3, 20265.0K4.13151.0.64
Now5.0K4.13151.0.64

Permissions & access

Permissions
storagedeclarativeNetRequestdeclarativeNetRequestWithHostAccessdeclarativeNetRequestFeedbackwebNavigationscriptingtabswebRequestunlimitedStorage
Host access
*://*/*

Screenshots

Inssman: Open-Source: Modify HTTP Request screenshot 1Inssman: Open-Source: Modify HTTP Request screenshot 2Inssman: Open-Source: Modify HTTP Request screenshot 3Inssman: Open-Source: Modify HTTP Request screenshot 4Inssman: Open-Source: Modify HTTP Request screenshot 5

About

🧑🏻‍💻 Open Source Developer Tool - Github - https://github.com/vvmgev/Inssman

Inssman add custom rules to modify HTTP requests and responses.

It is a free developer tool that which helps developers to organize their work more fast and easy. Inssman monitors the browser network for all tabs and if finds a request which matches one of the rule will accordingly modify.

✳️ What can Inssman do?✳️
👉 Redirect Request: ➡️ Redirect any request like HTML/CSS/JS/JSON/...etc.
👉 Block Request: ➡️ Block all type of request like GET/POST/PUT/...etc
👉 Modify Query Params: ➡️ Easily remove presenting parameters in the url or replace the existing one or adding new parameter.
👉 Modify Header: ➡️  Add/Remove/Append request and response headers. One of example is developer can fix issue like CORS by setting Content-Security-Policy, X-Frame-Options headers and all headers can by change by provide header and value.
👉 Modify Response: ➡️ This cool feature can return custom data from the network. Now is possible to return data types like HTML/CSS/JS/JSON. By choosing one of type developer can write custom code in the editor which has powerful user interface like VSCODE which supports everything that developer need to write code.

👉 Inject File: ➡️ You can easily inject external CSS and JavaScript files into any web page by simply providing the link to the file. This is a great way to quickly modify the style or functionality of a website without needing to manually edit the code. If you want to inject your own custom code into a web page you can enter HTML, CSS, or JavaScript directly into the extension, and it will be injected into the page as if it were part of the original code.

👉 HTTP Logger: ➡️ This feature allows you to easily view and analyze the request and response headers of all tabs in one place, giving you valuable insights into the data being exchanged.

👉 Modify Request Body: ➡️ Now it is possible to modify the request body for both APIs, XMLHttpRequest and Fetch. This new feature allows modification of the body without making any changes to the code.

🙌These all features are free and there isn't any limitation to create a rule.

👨‍💻Source code
https://github.com/vvmgev/Inssman

📚Documentation
https://github.com/vvmgev/Inssman#documentation

🙏Support us
https://github.com/vvmgev/Inssman/issues

Technical

Version
1.0.64
Manifest
V3
Size
3.51MiB
Min Chrome
88
Languages
1
Featured
Yes

Metadata

ID
ghlpdbkhlenlfiglgphledhfhchjfjfk
Developer ID
u803693440cac17241be672a6244bb236
Developer Email
[email protected]
Created
Jan 22, 2023
Last Updated (Store)
Jun 5, 2024
Last Scraped
Jun 3, 2026
Website

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Data sourced from the Chrome Web Store · last verified Jun 3, 2026.