tweak: mock and modify HTTP requests

Mock or modify HTTP requests, plus a developer toolbox for any page. Test, develop and demo your web app

tl;dr tweak lets you mock and modify HTTP requests without leaving the browser, plus a developer toolbox for any page Mock 🆓 ﹥ Mock response data, headers, status code and delay ﹥ Match requests by their JSON or form (x-www-form-urlencoded) body ﹥ Capture requests in the background and turn them into rules ﹥ Document your rules with markdown labels and notes ﹥ Export and import rules to share them with your team, or import a HAR file Modify headers 🆓 ﹥ Add, override, append or remove request and response headers ﹥ Apply them on every tab, or only on the tab you're testing ﹥ Works on every request: pages, scripts, images and API calls ﹥ Dynamic header values with templating Redirect 🆓 ﹥ Send requests to another url, such as API calls to localhost ﹥ Replace documents such as HTML/CSS/Images Developer toolbox 🆓 ﹥ A bar of tools painted right on the page you're testing ﹥ Edit the page in place, outline every layout box, draw and label on it ﹥ Take the page offline or throttle it, and see what the site is built with ﹥ Screenshot the visible area, the full page or a dragged area Tweak Basic 💸 ﹥ Unlimited rules ﹥ Modify live server responses and request payloads ﹥ Organize your workspace with collections ﹥ Debug requests with breakpoints and logpoints ﹥ More toolbox tools: eraser, cookie and storage editor, redactor, page to Markdown, time zone override Tweak Max 💎 ﹥ Everything in Basic ﹥ Write custom JavaScript to change requests and responses ﹥ Pause a request and edit it before it is sent ﹥ Variables and environments: switch between dev, staging and prod in one click ﹥ Create mock data with random generators ﹥ The whole toolbox: preview a phone, tablet and laptop side by side and type into all of them at once Useful links 🔗 ﹥ Getting started https://tweak-extension.com/docs/intro ﹥ FAQs https://tweak-extension.com/faqs ﹥ Changelog https://tweak-extension.com/changelog ﹥ Support help@tweak-extension.com