CaptionPass
Delivery QA with Audit Trail.
CaptionPass launched on August 25, 2026 with 2 votes, #5,788 of 23,274 launches that month.
What it does
Free online caption converter for SRT and WebVTT. Convert for YouTube, TikTok, and HTML5 with upload-ready output, optional enhanced formatting, and a full QA report.
Free online caption converter for SRT and WebVTT, plus signed conformance receipts checked against WCAG 2.1 AA, EN 301 549, and FCC 79.1. Convert for YouTube, TikTok, or HTML5 — then prove what the file was checked against.
SRT, VTT, ASS, or TTML in — an upload-ready file out, with every fix named. Built for the deadline you are on right now. Forward the report to a producer or client — “trust me” becomes “here's the diff.” Timing, overlap, line length, and styling per YouTube, TikTok, HTML5, and LMS specs. Deterministic rules — same file in, same fixes out, reproducible enough for CI. Save any file to a project and CaptionPass tracks it end to end — a live work queue, two-axis delivery QA, and an audit trail your clients and platforms can trust. Deep dives live in Learn — these are the problems editors search for before they find a fixer. Automate caption QA in CI or your pipeline. Free+ includes API keys (10…from captionpass.com
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