René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"BlogPosting","headline":"YouTube Transcript API for JavaScript and TypeScript","description":"Fetch YouTube transcripts in JavaScript and TypeScript with fetch, axios, async/await, typed responses, and production-safe error handling.","image":"https://transcriptapi.com/brand/youtube-transcript-api-og.png","mainEntityOfPage":"https://transcriptapi.com/blog/youtube-transcript-api-javascript","inLanguage":"en","author":{"@type":"Organization","name":"TranscriptAPI Team"},"publisher":{"@type":"Organization","name":"TranscriptAPI","logo":{"@type":"ImageObject","url":"https://transcriptapi.com/brand/logo-512.png","width":512,"height":512}},"datePublished":"2026-06-25T22:35:51.646501Z","dateModified":"2026-10-03T21:16:56.923496Z"}

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{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Can I call TranscriptAPI directly from browser JavaScript?","acceptedAnswer":{"@type":"Answer","text":"No. Public browser code must not contain your bearer key. Put the TranscriptAPI call in a server-side route, worker, or backend job, then have the browser call your own local route."}},{"@type":"Question","name":"What endpoint do I use to fetch a YouTube transcript in JavaScript?","acceptedAnswer":{"@type":"Answer","text":"Use GET https://transcriptapi.com/api/v2/youtube/transcript with video_url as the required query parameter and Authorization: Bearer  as the auth header."}},{"@type":"Question","name":"Should I use fetch or axios for a YouTube Transcript API call?","acceptedAnswer":{"@type":"Answer","text":"Use native fetch for simple Node 20+ scripts, workers, and route handlers. Use axios if your codebase already relies on axios interceptors, defaults, timeout handling, or shared error utilities."}},{"@type":"Question","name":"What is the TypeScript response shape for the default JSON transcript response?","acceptedAnswer":{"@type":"Answer","text":"The default JSON response has video_id as a string, language as a string, and transcript as an array of segments. Each segment has text, start, and duration fields."}},{"@type":"Question","name":"How should JavaScript code handle 429 rate limits?","acceptedAnswer":{"@type":"Answer","text":"Read Retry-After when it is present, otherwise use capped exponential backoff with a small maximum retry count. Do not retry indefinitely, and keep logs free of API keys."}},{"@type":"Question","name":"Do failed TranscriptAPI requests consume credits?","acceptedAnswer":{"@type":"Answer","text":"No. TranscriptAPI charges credits for successful requests. Failed 4xx, 5xx, and 429 responses cost 0 credits."}},{"@type":"Question","name":"When should I use an open-source YouTube transcript library instead of a managed API?","acceptedAnswer":{"@type":"Answer","text":"Use open source for local experiments, hobby scripts, prototypes, and low-volume jobs where free no-key usage is the priority. Use TranscriptAPI when you need a production server API, managed infrastructure, search, channel, playlist, or MCP workflows."}}]}