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Preview of NekoCap

NekoCap by nopol10

Create and upload community captions for YouTube videos (and more) with this easy to use extension that supports SSA/ASS rendering.

5 (7 reviews)5 (7 reviews)
378 Users378 Users
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Extension Metadata

Screenshots
Substation Alpha (.ass/.ssa) caption files with advanced effects can be loaded, uploaded and displayed! It's karaoke time!Create and edit captions directly on a video's page. Then upload it to NekoCap's servers for other users to view or export it and send it to the creators!
About this extension
View, create and share your captions/subtitles for videos on video streaming sites such as YouTube and niconico with this open source extension!
(This extension is in alpha, please help to report bugs to the Discord channel below)

Watch
* View community contributed captions made in NekoCap with the extension while browsing YouTube & other supported sites
* View captions with cool, advanced effects (WIP, for Substation Alpha [SSA/ASS] captions only)

Create
* Create captions in any language in the browser with the NekoCap editor while watching videos
* Load and tweak externally created captions (SSA, ASS, SRT, VTT, SBV files are supported)
* Export captions created with the editor to SRT (other formats coming soon)

Share
* Submit your captions to the NekoCap server so that other NekoCap users can easily see them while browsing supported sites
* Give captions a thumbs up or down to let others know how accurate they are

* More features to come!
* And it's all free!
* (Click on the jigsaw icon and pin the NekoCap extension to login to submit captions)

Currently supported sites:
* YouTube
* Netflix (beta)
* niconico
* Vimeo
* bilibili
* TVer

Join the community on Discord here if you have questions and feedback: https://discord.gg/xZ9YEXY5pd

Contribute to this extension here: https://github.com/nopol10/nekocap

Important note: Captions are submitted by the community and may not reflect the intent of the video creator. Neither NekoCap nor the video creator is responsible for content in the community contributed captions
Rated 5 by 7 reviewers
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Permissions and dataLearn more

Required permissions:

  • Access browser activity during navigation
  • Access your data for sites in the youtube.com domain
  • Access your data for sites in the tver.jp domain
  • Access your data for sites in the nicovideo.jp domain
  • Access your data for sites in the vimeo.com domain
  • Access your data for sites in the bilibili.com domain
  • Access your data for sites in the netflix.com domain
  • Access your data for sites in the primevideo.com domain
  • Access your data for sites in the twitter.com domain
  • Access your data for sites in the x.com domain
  • Access your data for sites in the wetv.vip domain
  • Access your data for sites in the tiktok.com domain
  • Access your data for sites in the iq.com domain
  • Access your data for sites in the abema.tv domain
  • Access your data for sites in the dailymotion.com domain
  • Access your data for sites in the bilibili.tv domain
  • Access your data for sites in the nogidoga.com domain
  • Access your data for sites in the cu.tbs.co.jp domain
  • Access your data for sites in the instagram.com domain
  • Access your data for sites in the unext.jp domain
  • Access your data for sites in the lemino.docomo.ne.jp domain
  • Access your data for sites in the oned.net domain
  • Access your data for sites in the archive.org domain
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
Version
1.18.0
Size
4.85 MB
Last updated
a month ago (Jul 2, 2025)
Related Categories
  • Photos, Music & Videos
  • Games & Entertainment
License
GNU General Public License v3.0 only
Privacy Policy
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Version History
  • See all versions
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Release notes for 1.18.0
  • Add support for OneD
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