Make subtitles easier to read for ADHD and fatigued viewers
Glide adds bold cognitive anchors to your SRT, VTT, and ASS captions so viewers stay focused and watch to the end.
Process your captions
Export captions from YouTube Studio or your editor as .srt, .vtt, or .ass, then upload them here.
Free tier: First 300 subtitle entries only.
For YouTube creators
Enhance your existing captions in three quick steps
1. Export captions
In YouTube Studio, export your subtitles as SRT or VTT. For anime, use ASS files from your source.
2. Process in Glide
Upload the file here, choose Focus or Calm, and download the enhanced version.
3. Upload back to YouTube
Upload the processed captions as a new track in YouTube Studio.
Chrome Extension — no file uploads needed
Install the Glide extension and YouTube subtitles are automatically enhanced as you watch. No exporting, no uploading, no re-uploading. Just better captions, instantly.
- ✓ Works on YouTube automatically
- ✓ Focus & Calm modes
- ✓ Adjustable intensity
- ✓ Toggle on/off with one click
How to install
- Download and unzip glide-extension.zip
- Open
chrome://extensionsin Chrome - Enable Developer mode (top-right toggle)
- Click Load unpacked and select the unzipped folder
- Pin Glide from the Extensions menu — done!
Glide
Why bold subtitles improve watch time
Standard captions give every word the same visual weight. For viewers with ADHD or reading fatigue, that turns subtitles into a flat wall of text. Glide highlights the parts that matter, giving the eye natural anchor points so people stay with your content instead of drifting away.
Focus mode vs Calm mode
- Focus — NLP-driven partial-word bolding with adjustable intensity. Best for tutorials, lectures, and dense dialogue.
- Calm — bolds up to two full words per line for gentle, predictable reading. Best for vlogs, podcasts, and relaxed viewing.
How to make SRT subtitles bold automatically
Export captions from YouTube Studio or your editor as SRT, VTT, or ASS. Upload the file here, choose a mode, download the result, and re-upload to YouTube. The whole process takes under 30 seconds.
Built for subtitle accessibility
ADHD affects an estimated 2.5% of adults globally — around 178 million people — according to the CDC. For these viewers, and the many more who experience reading fatigue, standard captions are a wall of equal-weight text that the eye struggles to scan. Glide highlights the parts that matter, giving the brain natural anchor points so people stay with your content instead of drifting away.
Better captions also directly impact performance: subtitles improve accessibility and search discoverability, helping videos reach viewers who would otherwise scroll past. Glide preserves all timing, tags, and formatting — only the emphasis changes. Your files stay fully compatible with every player.
API Documentation
REST API for integrating Glide into your application
srt · vtt · ass ·
plain
focus · calm
unicode (default) · html