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 snapshotsTracking since May 3, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| May 3, 2026 | 5.0K | 4.13 | 15 | 1.0.64 |
| Now | 5.0K | 4.13 | 15 | 1.0.64 |
Permissions & access
- Permissions
- storagedeclarativeNetRequestdeclarativeNetRequestWithHostAccessdeclarativeNetRequestFeedbackwebNavigationscriptingtabswebRequestunlimitedStorage
- Host access
- *://*/*
Screenshots
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
- —
- Support URL
- https://github.com/vvmgev/Inssman/issues
Similar extensions
Alternatives to Inssman: Open-Source: Modify HTTP Request, ranked by description similarity.
HTTP Interceptor
Intercept and modify HTTP requests & responses: URL redirects, headers, query params, and response body replacement.
24
Requestly: Intercept & Modify HTTP Requests
Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.
300.0K
★ 4.5
Mock:Intercept and directly return data
拦截请求并直接返回 Mock 数据,包括 XMLHttpRequest、fetch类接口
3.0K
★ 4.6
User JavaScript and CSS
User JavaScript and CSS on any website
200.0K
★ 4.8
Ajax Interceptor Tools
Modify the response text of Ajax requests
5.0K
★ 4.4
HTTP Header Injector
Easily inject custom HTTP headers into your browser requests. Toggle on/off, filter by domain, and manage multiple headers.
356
★ 5.0
CSS Injection
Inject custom CSS into websites with a professional management dashboard.
14
★ 3.0
CSS Overrider
Override CSS properties for any website with custom styles
20
Data sourced from the Chrome Web Store · last verified Jun 3, 2026.