modify
35 
33 
5 
15 
37 300 results. Page 1 of 12.
Simple Modify headers
30,000
4.35 
(23)
(23)
Intercept & modify HTTP(S) traffic: redirect URLs, modify headers, inject scripts, mock REST & GraphQL APIs, and more.
300,000
4.47 (1,773)
(1,773)
Mock or modify your HTTP requests to test, develop and demo your web application
70,000
4.64 (239)
(239)
Add, modify or remove a header for any request on desired domains.
40,000
3.29 (55)
(55)
Intercept HTTP(S) Request, Modify Headers, Log headers, Change Response, Block Request, Redirect, Custom HTML/CSS/JS/JSON
5,000
3.94 (16)
(16)
Modify your Ajax response to test
633
4.00 (2)
(2)
Modify HTTP headers, block assets or domains & redirect requests. Organise rules by folder and tab, optionally scope to domains.
10,000
4.75 (16)
(16)
Customize any website with AI. Remove ads, change colors, transform elements - just describe it. No coding required.
69
5.00 (2)
(2)
Use Modify Cookie — a cookie editor, modifier, and manager to add, delete, search, and edit cookie data in-tab.
145
5.00 (2)
(2)
AI-powered tab renaming for cleaner, smarter browsing.
6,000
4.40 (20)
(20)
Intercept, edit, and run HTTP requests directly in your browser. No account needed.
999
5.00 (1)
(1)
Add or convert customize http headers when you are visiting website
358
0.00 (0)
(0)
Edit HTTP request & response headers on any site. Profiles, URL filters, and import from ModHeader & Requestly.
503
5.00 (4)
(4)
Add, modify & delete HTTP request/response headers with URL & regex rules. Open-source, private, no data collection
5,000
4.83 (24)
(24)
Intercept, debug, modify header & response, replay HTTP requests. Comprehensive API client & cURL support in Chrome DevTools.
796
0.00 (0)
(0)
Add, modify & remove HTTP request and response headers on any site. Per-rule toggles, URL/method scoping, profiles, import/export.
132
5.00 (1)
(1)
A modern ModHeader alternative for modifying request headers and response headers with profiles, filters, tab targeting, and sync.
946
5.00 (1)
(1)
Modify request & response headers, redirect URLs, with profiles, filters and import/export. Open source, no tracking, ever.
20
0.00 (0)
(0)
Add, override, or remove HTTP request and response headers locally with profiles and URL filters.
30
0.00 (0)
(0)
Auto-delete your browser history & downloads based on custom keywords.
568
2.33 (6)
(6)
Intercept, inspect, and mock HTTP requests in your browser. Mock REST and GraphQL APIs without a proxy or backend changes.
6
0.00 (0)
(0)
Intercept API requests and modify responses: mock response bodies, edit headers, redirect, or block. No code changes needed.
12
0.00 (0)
(0)
Intercept, mock, and modify API requests directly in your browser. No server needed. 100% local and secure.
394
5.00 (9)
(9)
Exactly what it says on the tin. Modify Headers (like a boss)
64
5.00 (3)
(3)
Add or modify HTTP request headers for development and testing. Local-only, no tracking.
21
0.00 (0)
(0)300 results. Page 1 of 12.