tweak
ClaimedEdit headers, redirect URLs, and mock APIs locally in Chrome
From $36/year (free plan available) Visit WebsiteThe Bottom Line
- Best for
- Web developers and QA engineers who need to modify headers, redirect requests, or mock API responses while building or testing a web app.
- Price
- From $36/year (free plan available). Compare plans
Key facts
- Offers a free plan with a set number of rules; a premium plan is available with a trial
- Available for Chrome, Edge, and Firefox, with a large user base on Chrome
- Header rules support Active Tab or Global scope with regex matching
Not for
Teams needing to intercept traffic outside the browser, tweak only sees requests made from browsers not native or mobile apps
What is tweak?
Available on: Web, Desktop
Preview
Key Features
- Modify headers rule type: set, append, or remove request or response
- Redirect rule type with regex and capture groups
- Mock API responses locally, no proxy or backend server required
Pricing Plans
Free TrialPricing checked Oct 22, 2026. Source: tweak-extension.com/pricing, read Oct 22, 2026
| Plan | Price | Details |
|---|---|---|
| Free | $0 | For individual developers testing and mocking APIs
+1 more Show less
|
| Premium | $36/year | Unlimited rules plus advanced tooling
+3 more Show less
|
Is tweak worth the price?
The pricing is fair and generous for individual developers, with a free tier that covers basic mocking and a Premium tier at $36/year offering unlimited rules and advanced features.
It is cheaper than most API mocking tools, making it best for solo devs and small teams who want a low-cost, powerful extension.
Hidden Costs & Gotchas
Free tier limited to 12 rules, exceeding requires $36/year
No monthly payment option, only annual $36 upfront
Advanced features like custom JS and collections locked to Premium
How tweak's pricing compares
tweak starts at $3/mo, billed yearly. Its direct competitors are priced on a different basis (per user, or in another currency), so each entry price below is shown with its own unit and currency and is not ranked against the others.
Entry paid plan, monthly price (billing term shown per row), in each tool's own currency. Pricing checked Oct 22, 2026.
tweak by the numbers
Toolradar data: tweak's entry paid plan ($3/mo, billed yearly) ranks #2 of 9 for price among the Browser DevTools tools with a verified entry price and no stated unit, where the median is $4.99/mo. As of Nov 2026.
| Metric | tweak | Peer median | Position (1 is best) |
|---|---|---|---|
| Entry paid plan | $3/mo, billed yearly | $4.99/mo | #2 of 9 tools with no stated price unit, verified price |
| Free plan | Yes | 34 of 34 have one | n/a |
| Compare-page visits, last 30 days | 24 visits | 41 | #9 of 9 tools with 20+ compare-page visits |
Each position is counted among the tools that have data for that row, as noted under it. A lower entry price ranks higher; prices are read on vendor pages and compared only with tools priced on the same basis. All Browser DevTools data · How we compute this. Advertising and placement fees are not inputs to any position. Visit counts include visits from every source.
Cite this: Toolradar, “tweak by the numbers”, Nov 2026.
Reviews
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Modify HTTP request and response headers directly from your browser for web development and debugging.
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Still deciding?
Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.
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tweak FAQ
How does tweak allow developers to modify HTTP headers in Chrome?
How does tweak compare to Requestly for header editing and URL redirection?
What kind of traffic can tweak not intercept?
Which teams benefit most from using tweak for API testing and development?
Does tweak include a free tier?
Can tweak mock API responses for local development?
Why did many developers adopt tweak after a similar tool was removed from the Chrome Web Store?
How does tweak pricing compare with other Browser DevTools tools?
Source: tweak-extension.com