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Love SubTools?
Buy us a coffeeOur platform is built around three principles: speed, privacy, and simplicity. No downloads, no uploads, no complications.
Browse our library of 50+ tools organized into 8 categories. Whether you need to convert formats, fix timing, remove sound effects, or translate subtitles, there is a tool for every task. Each tool is purpose-built for a specific subtitle workflow.
Upload your subtitle file or paste the content directly into the tool. All processing happens in your browser using client-side JavaScript. Your data never leaves your computer, ensuring complete privacy. Results appear instantly with no waiting.
Copy the processed subtitles to your clipboard, download them as a file, or share them directly. We support SRT, VTT, ASS, TXT, JSON, and SUB formats. Your subtitles are ready to use in your video editor, YouTube, or any platform.
There are many subtitle tools online. Here is why thousands of creators choose SubTools for their subtitle workflow.
All processing happens client-side in your browser. Your subtitle files are never uploaded to any server, period.
The most comprehensive collection of free online subtitle tools. Conversion, cleanup, timing, translation, and more.
No waiting for server processing. Your subtitles are processed in milliseconds, right in your browser.
SRT, VTT, ASS, SUB, TXT, and JSON. Convert between any format or edit them directly in our online editor.
Two powerful tools to level up your subtitle workflow
Upload a video, mark timestamps, and type translations manually. Perfect for creating translated subtitles that match your video frame-by-frame.
Style your subtitles with fonts, colors, outlines, shadows, karaoke effects, and background boxes. Export as ASS or SRT with all styling preserved.
Jump straight to the tools our users rely on every day
8 categories, 50+ tools — everything you need for professional subtitle work
Convert subtitles between SRT, VTT, ASS, TXT, JSON, and SUB formats
Remove duplicates, empty lines, speaker names, and sound effects from subtitles
Fix subtitle timing, sync, delay, FPS conversion, and duration issues
Edit, preview, merge, and manage subtitles with powerful editing tools
Translate subtitles, create bilingual texts, and manage localization workflows
Clean transcripts, format OCR output, and extract subtitle text
Format subtitles for YouTube, TikTok, podcasts, and social media
JSON formatting, regex testing, metadata extraction, and batch processing
Learn more about subtitle formats, editing techniques, and best practices from our comprehensive guides and tutorials.
Learn professional techniques for fixing subtitle timing issues. From delay adjustments to frame rate conversion, master every timing tool.
A complete comparison of SRT, VTT, ASS, SUB, and other subtitle formats. Learn which format works best for your platform and workflow.
Step-by-step guide to translating subtitles for international viewers. Best practices for localization, timing, and cultural adaptation.