Add Subtitles
Add subtitle file to video
Configure
About this tool
Choose one supported file from your device (.mp4, .mov, .avi, .mkv). This workflow does not accept a source URL. Uploaded files are processed by SimplifyConvert's server-side media tools. Temporary working files are scheduled for cleanup after processing, while completed downloads use the site's download-result workflow.
Ready to process
Upload one supported file and start processing.
How to Add Subtitles
Step 1: Upload your file
Choose one supported file from your device (.mp4, .mov, .avi, .mkv). This workflow does not accept a source URL.
Step 2: Configure Options (if needed)
Review the settings shown for this tool and choose the values that fit your intended result.
Step 3: Click Add Subtitles
Submit the request to the server-side processing workflow. Completion time depends on the input, operation, and current service availability.
Step 4: Review Your Result
When processing finishes, continue to the download page for the processed file. Check the result before replacing your source file.
Why Use Add Subtitles?
Free to Use
No subscription or credit card is required. Processing limits can vary by tool, file type, and file size.
No Installation Required
Works directly in your web browser. Use on Windows, Mac, iPhone, Android, or any device with internet.
Result Expectations
Editing can require re-encoding, so quality, codec characteristics, and file size may change. Review the processed result.
Server-Side Processing
Uploaded files are processed by SimplifyConvert's server-side media tools. Temporary working files are scheduled for cleanup after processing, while completed downloads use the site's download-result workflow.
Frequently Asked Questions
Is this tool free to use?+
This tool can be used without a subscription or credit card. Processing availability and limits vary by workflow and input.
How is my uploaded file processed?+
Uploaded files are processed by SimplifyConvert's server-side media tools. Temporary working files are scheduled for cleanup after processing, while completed downloads use the site's download-result workflow.
What is the upload size limit?+
Each uploaded file is subject to the current 500 MB server file-size limit. Processing can still fail or time out for demanding media.
What result does Add Subtitles create?+
When processing finishes, continue to the download page for the processed file. Check the result before replacing your source file.
Can the result differ from the source?+
Editing can require re-encoding, so quality, codec characteristics, and file size may change. Review the processed result.
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Tool-Specific Workflow
Choose one supported file from your device (.mp4, .mov, .avi, .mkv). This workflow does not accept a source URL.
Processing Details
Uploaded files are processed by SimplifyConvert's server-side media tools. Temporary working files are scheduled for cleanup after processing, while completed downloads use the site's download-result workflow.
Clear Result Expectations
Editing can require re-encoding, so quality, codec characteristics, and file size may change. Review the processed result.