YYelly Nelly
HomeHow it worksPricingBlogAbout

Free tools

Small tools for the annoying parts of repurposing.

No sign-up, no upload limits, no catch. Everything runs in your browser — your files never leave your device.

SRT/VTT → clean text

Transcript cleaner

Strip the timestamps, numbering, and tags from a subtitle file to get a clean, copy-ready transcript.

Open tool
Convert SRT ↔ VTT

Subtitle converter

Convert a caption file between SRT and VTT — the two formats every editor argues over.

Open tool
Fix caption sync

Subtitle timing shifter

Nudge every timestamp in a subtitle file by a set offset to fix captions that drift out of sync.

Open tool
Resize for any platform

Aspect ratio calculator

Turn one video's dimensions into the exact crop for 9:16, 1:1, 4:5, and 16:9.

Open tool
Track your links

UTM link builder

Build trackable campaign links so you can see which platform actually drove the clicks.

Open tool
Tweet link → GIF

Twitter video to GIF

Paste a Twitter/X link (or drop a video) and turn it into a shareable GIF — right in your browser.

Open tool
YYelly Nelly

One video. Every platform. One click. Captions written by AI.

Links

  • Home
  • How it works
  • Pricing
  • Blog
  • About

Free tools

  • Transcript cleaner
  • Subtitle converter
  • Subtitle timing shifter
  • Aspect ratio calculator
  • UTM link builder
  • Twitter video to GIF

Follow

© 2026 Yelly Nelly. All rights reserved.
AboutPrivacyTerms