Is batch conversion available?

Yes. Drag or select multiple CAP files and they'll all convert to TTML simultaneously. Download results individually or as a ZIP.

Is this CAP to TTML converter free?

Yes, completely free. No registration, no hidden fees. Free users can convert files with Xonvert's full engine.

Why is my converted TTML file larger than the original CAP?

File size depends on compression settings and content complexity. Try the Medium quality preset for smaller output, or the file may simply contain data that resists TTML compression.

What browsers are supported?

Chrome, Firefox, Safari and Edge (all recent versions). Any browser supporting WebAssembly will work.

Is there a watermark on converted TTML files?

No. Free conversions produce clean output with no watermarks. Your TTML file is identical to what a paid desktop tool would produce.

Will this converter work on Chromebook?

Yes! Chromebooks run Chrome browser, which fully supports Xonvert's WebAssembly-based conversion engine.

Will I lose quality converting CAP to TTML?

No — TTML preserves quality losslessly. Your output will be faithful to the original.

Convert CAP to TTML

Fast, free, and secure CAP to TTML conversion. No registration required.

cap

ttml

Fast, free, and secure CAP to TTML conversion. No registration required.

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High Quality

Maintain maximum quality during conversion

Fast Processing

Convert files in seconds with our optimized engine

Secure & Private

Files automatically deleted after conversion

How to Convert CAP to TTML

Upload CAP File

Click the "Select File" button to upload your cap file from your device.

Start Conversion

Click the "Convert" button to instantly start converting to TTML.

Download TTML

Download your converted ttml file immediately after processing.

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