TTools SmartONLINE TOOLS
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IT & Developer tools

Local tools for crypto, data conversion, web, IPv4 networks and text.

All tools in this category

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Format JSON

Validate, format, minify and sort JSON keys.

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Base64

Encode or decode Unicode text with Base64.

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Password generator

Generate passwords with your chosen length and character sets.

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URL encode / decode

Encode Unicode text as a URL component or decode percent escapes.

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UUID v4 generator

Generate random UUID v4 identifiers individually or in batches.

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SHA-256 hash

Calculate a SHA-256 checksum from UTF-8 text or a local file.

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JWT reader

Inspect JWT header and payload locally, without verifying its signature.

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Regex tester

Test JavaScript regular expressions and inspect match positions and groups.

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Compare code / text

Find added, removed and unchanged lines between two versions of text.

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Unix timestamp converter

Convert Unix timestamps to dates or ISO dates to seconds and milliseconds.

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Number base converter

Number base converter with local processing, input validation and downloadable results.

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URL parser

URL parser with local processing, input validation and downloadable results.

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IPv4 subnet calculator

IPv4 subnet calculator with local processing, input validation and downloadable results.

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HEX / RGB / HSL

HEX / RGB / HSL with local processing, input validation and downloadable results.

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Roman numeral converter

Roman numeral converter with local processing, input validation and downloadable results.

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URL slug generator

URL slug generator with local processing, input validation and downloadable results.

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Text case converter

Text case converter with local processing, input validation and downloadable results.

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Sort / deduplicate lines

Sort / deduplicate lines with local processing, input validation and downloadable results.

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Random token generator

Random token generator with local processing, input validation and downloadable results.

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HMAC-SHA256 generator

HMAC-SHA256 generator with local processing, input validation and downloadable results.

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Text / binary converter

Text / binary converter with local processing, input validation and downloadable results.

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JSON minifier

JSON minifier with local processing, input validation and downloadable results.

Files stay on your device

Available tools process files in your browser. Nothing is uploaded.

Privacy

Files and text are processed in this browser tab, without server uploads or analytics. Language and theme preferences are saved on this device. Closing the tab releases the working files. On the first visit, the site uses the hosting provider’s approximate IP country when available, then your browser language. A language cookie remembers your choice for one year. You can change it at any time.