Video / FREE ONLINE TOOL
Caption Line Length
Checker
Flag subtitle lines longer than the limit you choose.
Use this toolFree to use. No signup. Runs in your browser.
Caption Line Length Checker
Processed in your browserYour result.
Choose. Adjust.
Review your result.
Flag subtitle lines longer than the limit you choose.
Counts Unicode code points after removing simple tags. It does not evaluate translation, timing quality or platform compliance.
Provide your own input, choose the available options and create the result. Review it before using or sharing it. No input is uploaded or stored in a user account.
Good to know.
What are the practical limits?
Counts Unicode code points after removing simple tags. It does not evaluate translation, timing quality or platform compliance.
Is my data uploaded?
No. Processing stays in this browser. The host receives normal page requests. Closing or refreshing clears the working state; downloaded files remain where you save them.
Are advertisements or analytics enabled?
No ad scripts or analytics are loaded in this build. Any future tracking requires an updated privacy notice and appropriate configuration.