Developer Tools

A collection of useful utilities for developers, sysadmins, and DevOps engineers.

All Tools Run Client-Side

Every tool on this page runs entirely in your browser. No data is sent to any server. Your passwords, tokens, and sensitive information never leave your device.

20 tools available | 0 coming soon

Generators

Create passwords, IDs, placeholder text, and more

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Password Generator

Generate cryptographically secure passwords

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Lorem Ipsum

Generate placeholder text in multiple styles

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UUID Generator

Generate and validate UUIDs v1 and v4

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QR Code Generator

Create QR codes for URLs and text

Encoding & Decoding

Encode, decode, and transform data formats

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Base64 Encoder/Decoder

Encode and decode Base64 strings

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URL Encoder/Decoder

Encode and decode URL components

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JWT Decoder

Decode and inspect JWT tokens

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HTML Entity Encoder

Encode special characters for HTML

Converters

Convert between different formats and standards

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JSON/YAML Converter

Convert between JSON and YAML

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Unix Timestamp

Convert between Unix timestamps and dates

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chmod Calculator

Calculate Unix file permissions

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Number Base Converter

Convert between binary, hex, decimal, octal

Validators & Testers

Test patterns, expressions, and configurations

Regex Tester

Test regular expressions with live matching

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Cron Expression Builder

Build and validate cron expressions

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IP Calculator

Calculate subnets, CIDR, and IP ranges

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JSON Validator

Validate and format JSON data

Analysis & Security

Hash, analyze, and inspect data

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Hash Generator

Generate MD5, SHA-1, SHA-256 hashes

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SSL Certificate Decoder

Decode and inspect SSL certificates

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Diff Tool

Compare two texts and show differences

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Text Statistics

Word count, character count, reading time

Need a Different Tool?

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