Glossary
The vocabulary of form backends, defined plainly, with how each concept shows up in SheetLink Forms.
1AJAX submitAn AJAX submit sends form data with JavaScript instead of a page navigation - inline succe...term2Cloudflare TurnstileCloudflare Turnstile is a CAPTCHA alternative that verifies visitors with background brows...term3CORSCORS is the browser mechanism that controls which websites may send JavaScript requests to...term4Delivery logA delivery log records every delivery attempt for each form submission - state, timestamps...term5Disposable emailA disposable email address is a throwaway inbox that expires in minutes. Why it correlates...term6drive.file scopedrive.file is the narrow Google OAuth scope that limits an app to files you picked or it c...term7fbclidfbclid is the click identifier Meta appends to landing page URLs from Facebook and Instagr...term8Form actionThe form action is the HTML attribute that tells the browser where to send a form's data o...term9Form backendA form backend is a hosted service that receives your form submissions for you - no server...term10Form endpointA form endpoint is the URL a form submits its data to. What endpoints accept, how they res...term11Form spamForm spam is unwanted automated submissions to web forms - link stuffing, fake signups, ju...term12Formula injectionFormula injection hides executable formulas in form input so they run when the spreadsheet...term13gclidgclid is the Google Click Identifier - a unique ID Google Ads appends to landing page URLs...term14HoneypotA honeypot is a hidden form field that humans never see but spam bots fill in - a zero-fri...term15Lead attributionLead attribution ties each lead to the campaign and click that produced it, from UTM tags ...term16msclkidmsclkid is the Microsoft Advertising click ID appended to landing page URLs - Bing's count...term17OAuth refresh tokenAn OAuth refresh token is the long-lived credential an app redeems for fresh access tokens...term18Offline conversionAn offline conversion is a sale that completes away from your website - a call, a signed d...term19Origin allowlistAn origin allowlist names the websites allowed to call an endpoint from the browser, enfor...term20Preflight requestA preflight is the OPTIONS request a browser sends before certain cross-origin calls, aski...term21Quarantine (form spam)Quarantine holds suspicious form submissions for human review instead of deleting them - s...term22Rate limitingRate limiting caps how many requests a client may send in a time window, answering the exc...term23Retry with backoffRetry with backoff re-attempts a failed operation at increasing intervals, absorbing outag...term24Spam heuristicsSpam heuristics judge a submission by its content - link stuffing, throwaway domains, empt...term25Thank-you pageA thank-you page is where a visitor lands after a successful form submit - confirmation, e...term26Timing trapA timing trap flags form submissions that arrive faster than a human could have filled the...term27urlencoded vs multiparturlencoded and multipart are the two ways HTML forms encode a POST body - compact pairs ve...term28UTM parametersUTM parameters are the five standard URL tags - source, medium, campaign, term, content - ...term29wbraid and gbraidwbraid and gbraid are Google's privacy-preserving replacements for gclid on iOS ad clicks....term30WebhookA webhook is an HTTP callback: one system POSTs data to a URL you give it whenever an even...term