DevPouch
DevPouch - Free Browser-Based Developer Tools
Fast browser-based tools for everyday development.
Find a tool
Search the most-used tools or jump into the full directory.
UUID Generator
Create random or time-ordered UUIDs with formatting controls.
Open toolJSONJSON Formatter
Pretty print JSON and make nested data easier to read.
Open toolEncodingJWT Decoder
Decode JWT header and payload without sending tokens to a server.
Open toolTimeUnix Timestamp Converter
Convert timestamps and dates in seconds or milliseconds.
Open toolHashingSHA-256 Generator
Create SHA-256 hashes from text with native browser cryptography.
Open toolSecurityPassword Generator
Generate strong random passwords locally with browser cryptography.
Open toolPopular tools
Common utilities with local processing and fast copy actions.
UUID Generator
Create random or time-ordered UUIDs with formatting controls.
Open toolJSONJSON Formatter
Pretty print JSON and make nested data easier to read.
Open toolEncodingJWT Decoder
Decode JWT header and payload without sending tokens to a server.
Open toolTimeUnix Timestamp Converter
Convert timestamps and dates in seconds or milliseconds.
Open toolHashingSHA-256 Generator
Create SHA-256 hashes from text with native browser cryptography.
Open toolSecurityPassword Generator
Generate strong random passwords locally with browser cryptography.
Open toolDeveloper guides
Practical explanations for common tool choices, security caveats, and debugging workflows.
UUID v4 vs UUID v7: Which Identifier Should You Use?
A practical comparison of random UUID v4 identifiers and time-ordered UUID v7 identifiers, with database and privacy tradeoffs.
JSON Formatting vs Validation vs Minification
Formatting, validation, and minification solve different JSON problems. This guide explains which workflow to use and why.
Base64 Encoding Is Not Encryption
Base64 is a reversible encoding format, not a security boundary. This guide explains safe and unsafe uses.
JWT Decoding vs JWT Verification
A JWT decoder helps inspect token contents, but it does not prove the token is valid or trustworthy.
Unix Timestamps: Seconds vs Milliseconds
Timestamp bugs often come from mixing seconds and milliseconds. This guide explains how to spot and avoid them.
Safe Use of Browser-Based Developer Tools
Browser-local tools are convenient, but safe use still depends on the data, device, browser, extensions, and site behavior.
Categories
Privacy-first
Tool input stays in the browser for processing. There are no backend routes for transforming user data.
No signup
Open a compact pouch of useful developer tools, paste input, copy output, and keep moving without account friction.
Practical context
Guides and tool pages explain common mistakes, security boundaries, and when to choose one workflow over another.
FAQ
Are these developer tools free?
Yes. The app is built as a free browser-based utility site with no account requirement.
Is tool input uploaded?
No. Interactive tools process input locally in the browser wherever possible and do not send tool input to a backend.
Can I paste secrets into tools?
Be careful with secrets in any online tool. DevPouch tools are designed for browser-local processing, but your device, browser, extensions, clipboard, and data sensitivity still matter.