File & Data Tools

Process data and files online: CSV, JSON, XML, YAML, Excel, SRT/VTT subtitles, data format converters, and diff tools.

01

VTT to SRT Converter

The WebVTT to SubRip (SRT) online converter allows you to convert subtitles prepared for HTML5 players into the most popular SRT format supported by most…

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02

SRT to VTT Converter

Our SRT to VTT converter allows you to transform classic SubRip subtitles (.srt) into the modern WebVTT format (.vtt) in just a few seconds.

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03

Online JSON Viewer

Use the Online JSON Viewer online instantly. No signup required.

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04

Online CSV Viewer

Use the Online CSV Viewer online instantly. No signup required.

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05

Online XML Viewer

Use the Online XML Viewer online instantly. No signup required.

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06

EPUB to TXT Converter

Words, characters, reading time, file sizes and percentage "optimization" after conversion.

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07

Online XLSX / Excel Viewer

Use the Online XLSX / Excel Viewer online instantly. No signup required.

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08

Crop Audio

Online audio trimming is a free, intuitive and fully functional tool that allows you to instantly cut, trim and split audio files directly in your web…

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09

File Excel Test Data Generator

A fast and reliable Excel file generator with test data allows you to instantly generate professional data sets for testing applications, databases and CRM…

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10

CSV Dummy Generator

Software testing requires realistic data – databases populated with structured records rather than generic placeholders like "test1" or "user123".

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11

Mirror Text Generator

Mirror text is text that looks like a reflection in a mirror.

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12

Base2 Base36 Converter

Thanks to this, you can easily analyze binary data streams, generate compact Base36 identifiers and understand the mechanics of converting positional systems.

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13

Crypto Converter

Cryptocurrency converter allows you to quickly convert values ​​between cryptocurrencies and fiat currencies.

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14

Ipv4 Ipv6 Converter

IPv4 (32-bit) and IPv6 (128-bit) are two versions of the Internet Protocol.

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15

List-to-Comma-Separated Values Converter

Use the List-to-Comma-Separated Values Converter online instantly. No signup required.

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16

Words HTML Converter

Manually wrapping each element with HTML tags is tedious.

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17

Reverse Text Letters

Reverse text is an operation that changes the order of characters to the reverse: "hello" → "olleh".

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18

JSON Array Flattener

Use our free online splaszczanie tablic json to calculate, convert and generate instantly. No signup required.

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19

ZIP and Postal Code Validator

Use the ZIP and Postal Code Validator online instantly. No signup required.

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File & Data Tools

Quickly view, format, and convert structured files online without downloading heavy desktop applications.

Instant In-Browser Viewers

Inspect structured data with JSON Viewer, view spreadsheets with CSV & Excel XLSX Viewer, and navigate documents with XML Viewer.

Convert video subtitles between VTT and SRT, extract text from EPUB to TXT, and trim audio files with ease.