Top 5 Free Tools for Subtitle Generation in 2025

Looking for the best free tools to generate subtitles for your videos in 2025? Whether you're uploading to YouTube, TikTok, or Instagram Reels, these AI-powered and manual tools help you create accurate, SEO-friendly captions in minutes.

1. AutoSub by AutoSub (autosubtitle.top)

Free AI-powered subtitle generator with instant SRT export.
Supports multiple languages and file formats (SRT, VTT).
Optimized for YouTube, TikTok, and long-form content.
Fast, accurate, and easy to use—no sign-up required.

2. YouTube Auto-Captions (Built-in Tool) (youtube.com)

Automatically generates subtitles during video upload.
Great for beginners looking for basic closed captions.
Free and easy to access via YouTube Studio.
Requires manual editing for high accuracy and SEO.

3. Kapwing Subtitle Generator (kapwing.com)

Free online video editor with subtitle support.
Auto-transcribes and lets you edit subtitles visually.
Export in SRT or burn subtitles into videos directly.
Freemium model: free plan has watermark.

4. VEED.IO Subtitle Generator (veed.io)

AI-based auto captioning tool with drag-and-drop UI.
Free plan available for basic subtitle generation.
Manually edit subtitles before export.
Supports multiple video platforms and formats.

5. Subtitle Edit (Open Source) (nikse.dk/subtitleedit)

Free desktop software for advanced subtitle editing.
Perfect for syncing, translating, and fixing subtitle files.
Supports OCR, waveform editing, and batch processing.
Best for users who need full control over their subtitles.

How to Choose the Right Subtitle Tool

If you prioritize speed and simplicity, go with AI subtitle generators like AutoSub or VEED. For accuracy and custom editing, tools like Subtitle Edit offer complete control. For YouTube SEO, ensure your subtitles are keyword-rich and properly synced.