{"title":"Blacklight Inspection","page_title":"Rails Explained","uri_ins":"http://www.railsexplained.com/","uri_dest":"https://www.railsexplained.com/","uri_redirects":["http://www.railsexplained.com/"],"secure_connection":{},"host":"www.railsexplained.com","config":{"emulateDevice":{"name":"Pixel 4a (5G)","userAgent":"Mozilla/5.0 (Linux; Android 11; Pixel 4a (5G)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36","viewport":{"width":353,"height":745,"deviceScaleFactor":3,"isMobile":true,"hasTouch":true,"isLandscape":false}},"cleareCache":true,"captureHar":true,"captureLinks":false,"enableAdBlock":false,"saveBrowserProfile":false,"numPages":2,"defaultTimeout":35000,"defaultWaitUntil":"networkidle2","headless":true,"headers":{},"extraChromiumArgs":["--disable-features=TrackingProtection3pcd","--website-analysis-scan=9f7479bc-89d1-494e-9b58-b4278ba02b8c"],"extraPuppeteerOptions":{}},"browser":{"name":"Chromium","version":"Chrome/127.0.6533.88","user_agent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/127.0.0.0 Safari/537.36","platform":{"name":"Linux","version":"4.4.302+"}},"script":{"host":"f55531b6c604","version":{"npm":"3.11.0","commit":"dev"},"node_version":"v24.20.0"},"start_time":"2026-09-14T00:11:31.720Z","end_time":"2026-09-14T00:11:50.262Z","browsing_history":["https://www.railsexplained.com/","https://www.railsexplained.com/pages/unpacking-bundler/","https://www.railsexplained.com/pages/what-is-bootsnap/"],"hosts":{"requests":{"first_party":["www.railsexplained.com"],"third_party":["fonts.googleapis.com","cdn.usefathom.com","kit.fontawesome.com","f.convertkit.com","ka-f.fontawesome.com","fonts.gstatic.com","app.convertkit.com"]}},"reports":{"behaviour_event_listeners":{},"canvas_fingerprinters":{"data_url":{},"fingerprinters":[],"styles":{},"texts":{}},"canvas_font_fingerprinters":{"canvas_font":{},"text_measure":{}},"cookies":[{"name":"__cf_bm","value":"YGlH8LlSgObafQRergfUIW20vsACHwSE5rESFHlDAD8-1789344706.3584645-1.0.1.1-seizeegjf944xJCpPRU1SYU3R5HtyZm7YcRJ0mDoBLPJ6y1BzHMAkz9iWjj6CPy2NxpwhorA3R77Zw54_Iq8LNXVRZfoHpPqRhbgL2CjPrGrpa22VCA0KOulSTABzjvuIZ0r6GwkyrCmmMbl3TlA8g","domain":"convertkit.com","path":"/","expires":"2026-09-14T00:41:46.370Z","size":228,"httpOnly":true,"secure":true,"session":false,"sameSite":"None","priority":"Medium","sameParty":false,"sourceScheme":"Secure","sourcePort":443,"type":"unknown","third_party":true}],"fb_pixel_events":[],"tiktok_pixel_events":[],"twitter_pixel_events":[],"google_analytics_events":[],"key_logging":{},"session_recorders":{},"third_party_trackers":[{"data":{"body":{},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{"host":"https://www.railsexplained.com/pages/what-is-bootsnap/","referrer":"","search":"","token":"","user":"8901f234-fad1-4a21-91b5-43aa517763ef"},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/pages/what-is-bootsnap/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{"cid":50024707,"h":"https://www.railsexplained.com","p":"/pages/what-is-bootsnap/","qs":{},"r":"","sid":"RYWMJJIY"}},"stack":[{"fileName":"https://www.railsexplained.com/pages/what-is-bootsnap/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/?h=https%3A%2F%2Fwww.railsexplained.com&p=%2Fpages%2Fwhat-is-bootsnap%2F&r=&sid=RYWMJJIY&qs=%7B%7D&cid=50024707"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/pages/what-is-bootsnap/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/script.js"},{"data":{"body":{},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{"host":"https://www.railsexplained.com/pages/unpacking-bundler/","referrer":"","search":"","token":"","user":"8901f234-fad1-4a21-91b5-43aa517763ef"},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/pages/unpacking-bundler/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{"cid":91959179,"h":"https://www.railsexplained.com","p":"/pages/unpacking-bundler/","qs":{},"r":"","sid":"RYWMJJIY"}},"stack":[{"fileName":"https://www.railsexplained.com/pages/unpacking-bundler/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/?h=https%3A%2F%2Fwww.railsexplained.com&p=%2Fpages%2Funpacking-bundler%2F&r=&sid=RYWMJJIY&qs=%7B%7D&cid=91959179"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/pages/unpacking-bundler/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/script.js"},{"data":{"body":{"host":"https://www.railsexplained.com/","referrer":"","search":"","token":"","user":"8901f234-fad1-4a21-91b5-43aa517763ef"},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{},"filter":"||convertkit.com^*/visit","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://app.convertkit.com/forms/5408727/visit"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{"cid":97171368,"h":"https://www.railsexplained.com","p":"/","qs":{},"r":"","sid":"RYWMJJIY"}},"stack":[{"fileName":"https://www.railsexplained.com/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/?h=https%3A%2F%2Fwww.railsexplained.com&p=%2F&r=&sid=RYWMJJIY&qs=%7B%7D&cid=97171368"},{"data":{"body":{},"filter":"||cdn.usefathom.com^","listName":"easyprivacy.txt","query":{}},"stack":[{"fileName":"https://www.railsexplained.com/","source":"ThirdPartyTracker RequestHandler"}],"type":"TrackingRequest","url":"https://cdn.usefathom.com/script.js"}]}}