What is a subtitle cleaner and why do I need it?

A subtitle cleaner is a tool that removes unwanted elements from subtitle files, such as watermarks, credits, excessive formatting, and SDH (hearing-impaired) descriptions. You need it to make subtitles look more professional and remove distracting content that wasn't meant for general audiences.

What subtitle formats does the cleaner support?

Our subtitle cleaner supports all major subtitle formats including SRT, VTT (WebVTT), ASS (Advanced SubStation Alpha), SUB, SBV (YouTube), and STL formats. The tool automatically detects the format and applies appropriate cleaning methods.

What does SDH mean and should I remove it?

SDH stands for Subtitles for the Deaf and Hard of Hearing. These include sound descriptions like [music playing], [door slams], and speaker labels. You should remove SDH elements if you want clean subtitles for general audiences, but keep them if accessibility is important for your use case.

Is the subtitle cleaner free to use?

Yes, our subtitle cleaner is completely free to use. There are no registration requirements, no file size limits, and no watermarks added to your cleaned subtitle files. You can clean and download as many subtitle files as you need.

How do I remove watermarks from subtitle files?

To remove watermarks from subtitle files, upload your subtitle file to our cleaner, enable the 'Remove watermarks' option, and click 'Clean Subtitles'. The tool will automatically detect and remove common watermark patterns like website URLs, email addresses, and credit lines.

Free Subtitle Cleaner - Remove Watermarks & Fix Formatting

Professional subtitle cleaning tool to remove watermarks, strip SDH elements, fix formatting, and clean unwanted content from SRT, VTT, ASS, SUB, SBV, and STL subtitle files. Free online tool with instant download.

SRT CleanerVTT CleanerASS CleanerWatermark RemoverSDH Stripper

Upload Your Subtitle File

Upload your subtitle file to start cleaning. We support all major subtitle formats.

Drag & Drop your subtitle file

Support for SRT, VTT, SUB, SBV, ASS, and STL formats up to 5MB

About Subtitle Cleaning

What does subtitle cleaning do?

Subtitle cleaning removes unwanted formatting, watermarks, and fixes common issues that make subtitles look unprofessional or hard to read.

Common cleaning operations

• SDH Removal: Removes sound descriptions and speaker labels from hearing-impaired subtitles
• Watermark Removal: Removes website URLs, email addresses, and credit lines
• Uppercase Fixing: Converts ALL CAPS text to proper capitalization
• Tag Removal: Removes leftover formatting tags from subtitle conversions

Tip: Always preview your cleaned subtitles before downloading to ensure the cleaning didn't remove important content.