SRT file converter

A web tool to convert SRT subtitle files to other formats, streamlining workflow for video editors, content creators, and translators.

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About This Tool

The tool converts subtitle files between common formats (SRT, VTT, SSA/ASS) while validating timecodes, normalizing line endings, and preserving cue text. It accepts input as text payloads or file streams and outputs a correctly formatted subtitle file.

Conceptually, the process follows parse -> transform -> serialize: parse the source into a cue list, adjust or reformat times, and serialize to the target syntax. It can apply an optional global time offset and map basic styling when supported by the target format. Batch processing supports multiple files in a single run.

Use cases include preparing captions for different video players, migrating archives to modern formats, and localization teams delivering consistent subtitles across platforms. Its unique value lies in robust timecode handling, encoding compatibility, and accurate text preservation across formats, along with reliable error reporting for malformed inputs.

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How to Use

Provide inputs: select source_format and target_format, paste or attach subtitle content.
Configure options: set optional time_offset_ms and encoding preference.
Run conversion: initiate processing to generate target format.
Validate outputs: inspect timing alignment and text integrity.
Export: download or copy the converted subtitle content.

Frequently Asked Questions

Find Quick Answers

Which formats are supported for input and output?

The tool primarily supports SRT and VTT as inputs and outputs. It also handles basic text in SSA/ASS when possible, preserving cues and timing. Complex styling may be dropped when converting to formats without styling support.

Can it fix misformatted timestamps or time shifts?

Yes. The converter normalizes timestamps to standard SRT/VTT formats and can apply a global time offset. It also reports non-recoverable timecode issues and fixes common nonstandard delimiters or milliseconds.

How does it handle encoding and non-ASCII characters?

Encoding is preserved or re-encoded according to the target setting, with UTF-8 as default. Non-ASCII characters are preserved, and BOM handling can be configured to suit downstream players.

Is the conversion process private and independent?

Conversions are stateless and processed on the server side. Results are provided for download or copy, with no long-term storage beyond the current session unless configured otherwise.

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