Question 1

What is a .IDX file?

Accepted Answer

A .IDX file is a VobSub Subtitles format used in the data & markup category. You can view the full technical details on this page, or convert it to another format using the tool above.

Question 2

How do I convert a .IDX file online for free?

Accepted Answer

Select a target format from the list on this page (e.g. ASS, FFMETA, JSS), configure any settings, then click Start Conversion. No software to install, no account required for files up to 20 MB.

Question 3

What formats can I convert .IDX to?

Accepted Answer

You can convert .IDX to 9 formats including ASS, FFMETA, JSS and 6 more.

Question 4

Is the .IDX converter free?

Accepted Answer

Yes, completely free for files up to 20 MB. No account or credit card needed. Sign up free to convert files up to 5 GB.

Question 5

Is my .IDX file kept private?

Accepted Answer

Yes. Files are uploaded over an encrypted connection and permanently deleted from our servers immediately after you download the result. We never read, store, or share your files.

Question 6

Can I convert multiple .IDX files at once?

Accepted Answer

Yes. Batch conversion is supported — upload up to 10 files at once on the free plan, or up to 100 files with a paid plan.

IDX File Converter — Convert .IDX to ASS, FFMETA, JSS & More

VobSub Subtitles

Convert IDX to (9 formats)

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What is a .IDX file?

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