# VibeHeader

> VibeHeader is a lightweight, open-source browser extension trusted by 10,000+ developers for editing HTTP request headers in Chrome and Edge. It combines one-link sharing with per-Profile Request Filters, current-page suggestions, regex matching, a built-in URL tester, and multiple locally saved Profiles—no account, ads, or extension analytics.

Key terms: Modify HTTP Headers, Browser Extension, Chrome Extension, Edge Extension, Header Editor, Request Headers, Request Filters, URL Tester, Profiles, ModHeader Alternative, Requestly Alternative, Open Source, Share Links, Collaborative Development, Manifest V3, Developer Tools, API Testing, Header Management, URL Fragment Sharing

## Core Features

- [VibeHeader Features](https://www.vibeheader.com/chrome-header-editor-extension/): Request-header editing, local Profiles, Request Filters, a URL tester, and client-side share links in a focused MV3 extension
- [ModHeader Extension for Edge Alternative](https://www.vibeheader.com/edge-modify-headers-extension/): Install VibeHeader 1.1 from Microsoft Edge Add-ons for focused request-header editing, Profiles, Request Filters, DevTools verification, and client-side sharing
- [Request Filters](https://www.vibeheader.com/use-cases/per-site-header-rules/): Scope each Profile to request URLs with current-page suggestions, wildcard or regex matching, and a built-in URL tester
- [Profiles](https://www.vibeheader.com/use-cases/profiles/): Keep project and environment setups separate, activate more than one Profile, and understand deterministic override behavior
- [Share Page](https://www.vibeheader.com/s/): Preview one shared Profile with headers and Request Filters before import; the fragment is not included in the page request, common sensitive values are masked, and the complete link should stay in a trusted channel

## Alternatives and Migration

- [ModHeader vs VibeHeader](https://www.vibeheader.com/compare/modheader-vs-vibeheader/): Request-header comparison across Profiles, URL Filters, sharing, public source, product scope, and manual migration
- [Header Editor vs VibeHeader](https://www.vibeheader.com/compare/header-editor-vs-vibeheader/): Factual comparison of two open-source, ad-free tools across header support, URL rules, Profiles, sharing, Chrome builds, and licensing
- [Requestly Alternative: Hands-On Comparison](https://www.vibeheader.com/alternatives/requestly/): Kai, VibeHeader's founder, configured and server-verified the same URL-scoped request-header rule in VibeHeader and Requestly; includes installed-product screenshots, methodology, primary sources, honest product boundaries, and guidance on which workflow fits each tool
- [Migration Guide](https://www.vibeheader.com/migrate/modheader-to-vibeheader/): Copy simple ModHeader request headers and URL filters directly, with optional detailed steps for multiple Profiles, private agent-assisted conversion of redacted exports, verification, and unsupported workflow feedback
- [ModHeader Alternative](https://www.vibeheader.com/modheader-alternative/): Direct Chrome and Edge replacement guide for straightforward request-header editing, Request Filters, and review-before-import sharing of complete scoped setups
- [ModHeader の代替 (Japanese)](https://www.vibeheader.com/ja/modheader-alternative/): Japanese-language guide for switching from ModHeader and sharing complete scoped VibeHeader setups
- [ModHeader 替代品 (Chinese)](https://www.vibeheader.com/zh/modheader-alternative/): Chinese-language guide for switching from ModHeader and sharing complete scoped VibeHeader configurations
- [Alternativas a ModHeader (Spanish)](https://www.vibeheader.com/es/modheader-alternative/): Spanish-language guide for switching from ModHeader and sharing complete scoped VibeHeader configurations
- [ModHeader-Alternative (German)](https://www.vibeheader.com/de/modheader-alternative/): German-language guide for switching from ModHeader and sharing complete scoped VibeHeader setups
- [Alternative a ModHeader (Italian)](https://www.vibeheader.com/it/modheader-alternative/): Italian-language guide for switching from ModHeader and sharing complete scoped VibeHeader configurations
- [Alternative à ModHeader (French)](https://www.vibeheader.com/fr/modheader-alternative/): French-language guide for switching from ModHeader and sharing complete scoped VibeHeader configurations
- [ModHeader マルウェア削除ガイド (Japanese)](https://www.vibeheader.com/ja/blog/remove-modheader-malware-cleanup-guide/): Japanese-language ModHeader malware removal and cleanup guide
- [ModHeader 恶意软件清理指南 (Chinese)](https://www.vibeheader.com/zh/blog/remove-modheader-malware-cleanup-guide/): Chinese-language ModHeader malware removal and cleanup guide
- [Eliminar el malware de ModHeader (Spanish)](https://www.vibeheader.com/es/blog/remove-modheader-malware-cleanup-guide/): Spanish-language ModHeader malware removal and cleanup guide
- [ModHeader-Malware entfernen (German)](https://www.vibeheader.com/de/blog/remove-modheader-malware-cleanup-guide/): German-language ModHeader malware removal and cleanup guide
- [Rimuovere il malware ModHeader (Italian)](https://www.vibeheader.com/it/blog/remove-modheader-malware-cleanup-guide/): Italian-language ModHeader malware removal and cleanup guide
- [Supprimer le malware ModHeader (French)](https://www.vibeheader.com/fr/blog/remove-modheader-malware-cleanup-guide/): French-language ModHeader malware removal and cleanup guide
- [ModHeader Safe Alternative](https://www.vibeheader.com/modheader-safe-alternative/): Public MIT-licensed request-header editor with local Profiles, precise Request Filters, no ads or extension analytics, and review-before-import sharing

## Use Cases and How-To Guides

- [Add Custom Request Headers](https://www.vibeheader.com/how-to/add-custom-request-header/): Add a request header to a Profile, scope it with a Request Filter, test an exact target URL, and verify the outgoing request in DevTools
- [Modify HTTP Headers in Chrome](https://www.vibeheader.com/how-to/modify-http-headers-chrome/): Three-method guide covering repeatable MV3 request-header changes, one-off fetch requests, User-Agent overrides, response-header Local Overrides, verification, and troubleshooting
- [Spoof User Agent in Chrome](https://www.vibeheader.com/how-to/spoof-user-agent-chrome/): How to change browser user agent strings for testing
- [Per-Site Header Rules](https://www.vibeheader.com/use-cases/per-site-header-rules/): Set URL-scoped request headers with current-page suggestions, wildcard or regex matching, a URL tester, and Profile-specific scopes
- [Profiles for Multiple Projects](https://www.vibeheader.com/use-cases/profiles/): Organize local, staging, QA, and experiment setups with local storage, per-Profile filters, and visible precedence rules

## Problem Solutions

- [ModHeader Privacy Concerns](https://www.vibeheader.com/problems/modheader-privacy/): Verifiable-trust checklist covering public source, local storage, Request Filters, URL-fragment sharing, and the sensitivity of complete links
- [ModHeader Not Working](https://www.vibeheader.com/problems/modheader-not-working/): Troubleshoot exact target URLs, Filter and Profile state, Profile precedence, and the final outgoing request
- [ModHeader Ads Issues](https://www.vibeheader.com/problems/modheader-ads/): Move compatible request headers and URL scope into local Profiles, then share one reviewable setup without ads or extension analytics

## Competitor Alternatives Hub

- [ModHeader Competitors](https://www.vibeheader.com/alternatives/modheader-competitors/): Use-case comparison of VibeHeader, Requestly, Header Editor, and desktop proxies with current product scope and delivery details
- [Header Editor Alternative](https://www.vibeheader.com/alternatives/header-editor/): When VibeHeader's simpler Profile and share workflow fits better, and when Header Editor's broader rule engine does

## Blog

- [VibeHeader Blog](https://www.vibeheader.com/blog/): First-person notes on HTTP header tooling, browser-extension privacy, and building tools developers can trust
- [VibeHeader 1.1: Profiles, Request Filters, and Better Sharing](https://www.vibeheader.com/blog/vibeheader-1-1-profiles-request-filters/): A community-feedback-led release covering multiple Profiles, precise request URL scoping, filter-aware sharing, and a popup save reliability fix
- [ModHeader Flagged as Malware: Why I Built VibeHeader](https://www.vibeheader.com/blog/modheader-malware-why-i-built-vibeheader/): Founder Kai's honest take on the July 2026 ModHeader malware event, the three problems that motivated VibeHeader (painful sharing, unwanted promo popups, over-broad permissions), and what to do if you're leaving ModHeader
- [How to Remove the ModHeader Malware — Cleanup & Self-Check Guide](https://www.vibeheader.com/blog/remove-modheader-malware-cleanup-guide/): Practical, source-attributed guide to the July 2026 ModHeader v7.0.18 malware flag — confirm if affected, uninstall from Chrome and Edge, wipe leftover local storage on macOS and Windows, block the exfiltration domain api.stanfordstudies.com, rotate exposed secrets, and an IOC table for security teams

## Getting Started

- [Install VibeHeader](https://www.vibeheader.com/install/): Install the latest VibeHeader 1.1 release from the Chrome Web Store or Microsoft Edge Add-ons, or use the official manual ZIP
- [VibeHeader Release Notes](https://www.vibeheader.com/releases/): Version-by-version changes from the initial 1.0.0 release through the latest VibeHeader update
- [Chrome Web Store](https://chromewebstore.google.com/detail/vibeheader/imjffcblfdblnjcekpamheljmolejoll): Direct installation link for Chrome users
- [Manifest V3 Support](https://www.vibeheader.com/manifest-v3-header-editor/): Modern extension architecture compliance and future-proofing
- [Update VibeHeader](https://www.vibeheader.com/help/update-extension/): Update to VibeHeader 1.1 in Chrome or Microsoft Edge without uninstalling or reinstalling
- [Privacy Policy](https://www.vibeheader.com/privacy/): Extension data boundaries, local storage, requested permissions, Request Filter implications, URL-fragment sharing, and the separate website analytics notice
- [Our Story](https://www.vibeheader.com/blog/why-i-built-vibeheader/): Why VibeHeader began as an AI-assisted weekend prototype, how the open-source product evolved after the ModHeader security event, and the quality, privacy, and accountability standards guiding it today

## Key Differentiators

VibeHeader stands out from competitors through:
- **No Extension Analytics**: The extension has no analytics or user account requirement
- **No Advertisements**: Clean interface without ads or promotional content
- **Request Filters**: Exact host, full URL, wildcard, and regex matching with OR semantics, current-page suggestions, and a built-in URL tester
- **Multiple Profiles**: Keep project setups separate, run more than one Profile together, and resolve overlapping same-Header changes deterministically—the later Profile in the list takes priority
- **Link-based Sharing**: Share one Profile, including its valid filters, through a URL fragment
- **Client-side Processing**: Shared configuration fragments are parsed in the browser and are not sent to the VibeHeader server
- **Manifest V3 Native**: Built for modern Chrome extension architecture
- **Lightweight Design**: Minimal resource usage with focused feature set
- **Sensitive Data Masking**: Automatic masking of authorization, token, and secret values in previews

VibeHeader encodes shared configurations in URL fragments (`#c=encoded_json`). Browsers do not include the fragment in requests to the site, so the VibeHeader server cannot log the shared payload. Anyone with the complete link can still read the configuration, so links should be sent through a trusted channel.