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FREE FORMAT CONVERTER 26 Conversion Pairs • 100% In-Browser & Private

Convert Localization & Subtitle Files Instantly & Privately

Transform SRT to VTT, JSON to YAML, PO to XLIFF, and 23 more formats directly in your browser — zero file uploads, zero data retention, 100% free.

Convert File Now All 26 Pairs

No account required 100% Local (In-Browser) 26 Format Pairs

Drop your file here, or click to browse

26 Conversion Pairs • 100% In-Browser & Private
26 Supported Pairs

Convert Any Localization, Config, or Subtitle File

Choose a format pair below to convert files instantly in your browser with zero data retention.

Subtitles (SRT, VTT, SBV)

SRT Subtitles → VTT Subtitles

100% Lossless

SRT Subtitles → YouTube SBV

100% Lossless

VTT Subtitles → SRT Subtitles

100% Lossless

VTT Subtitles → YouTube SBV

100% Lossless

YouTube SBV → SRT Subtitles

100% Lossless

YouTube SBV → VTT Subtitles

100% Lossless

Data Serialization (JSON, YAML, ARB)

JSON → YAML

100% Lossless

YAML → JSON

100% Lossless

JSON → Flutter ARB

100% Lossless

Flutter ARB → JSON

100% Lossless

Key-Value & Config (JSON, Properties, INI, Strings)

JSON → Java Properties

Dot-Notation Mapping

Java Properties → JSON

Dot-Notation Mapping

YAML → Java Properties

Dot-Notation Mapping

Java Properties → YAML

Dot-Notation Mapping

Java Properties → iOS Strings

100% Lossless

iOS Strings → Java Properties

100% Lossless

INI Config → Java Properties

Dot-Notation Mapping

Java Properties → INI Config

Dot-Notation Mapping

i18n XML (PO, XLIFF, RESX)

Gettext PO → XLIFF

100% Lossless

XLIFF → Gettext PO

100% Lossless

.NET RESX → Java Properties

100% Lossless

Java Properties → .NET RESX

100% Lossless

Apple & Microsoft (Plist, RESX, Strings)

JSON → Apple Plist

Dot-Notation Mapping

Apple Plist → JSON

Dot-Notation Mapping

.NET RESX → iOS Strings

100% Lossless

iOS Strings → .NET RESX

100% Lossless
AI Translation

Need to translate your converted file?

Translate your JSON, PO, YAML, or Subtitle file into 20+ languages with 100% structural integrity protection.

Translate File with AI →
FAQ

Questions & Answers

Is the online file converter completely free?

Yes! structrans format converter is 100% free with no file limits, no registration, and no credit card required.

Are conversions lossless and safe for developer files?

Subtitle formats (SRT ↔ VTT ↔ SBV) and i18n exchange formats (PO ↔ XLIFF, RESX ↔ Strings) are 100% lossless. When converting complex nested formats (like JSON) to flat key-value formats (like Java .properties), nested trees are mapped using dot-notation keys with clear inline warnings.

How are special characters, unicode, and non-ASCII text handled?

Our parser handles UTF-8 normalization and Java \uXXXX unicode escape sequences automatically. Non-ASCII characters in iOS .strings, Android XML, RESX, and Gettext PO files are decoded cleanly without corruption.

Are my private localization files or subtitles uploaded to a server?

No. All parsing and conversion logic runs strictly client-side inside your web browser’s memory. Your files never touch a backend server or database.

Can I translate the file right after converting?

Absolutely! Once converted, you can launch the structrans AI File Translator to translate your file into 20+ languages while preserving all keys and template variables.

Convert Any File Format. Free, Private, Instant.

No account needed. No file uploads. 26 format pairs ready in one click.

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