Loading...
Loading...
Loading...
Professional developer utilities — JSON formatting, encoding/decoding, hashing, regex testing, code conversion, SQL formatting, cron builder, API testing & more.
ToolsMonk's developer tools bring together 27 free browser-based utilities for users who want to professional developer utilities — json formatting, encoding/decoding, hashing, regex testing, code conversion, sql formatting, cron builder, api testing & more. Instead of opening multiple websites for related tasks, you can compare similar workflows in one place and move from one tool to the next without extra setup.
Popular starting points in this category include JSON Formatter, Base64 Encoder/Decoder, URL Encoder/Decoder, and JWT Decoder. Every tool is designed to work quickly in modern browsers, which makes this collection useful for first-time visitors, repeat users, and teams that need straightforward results without downloads or account creation.
This category currently includes 5 popular picks and 5 trending tools, helping users discover the most in-demand options first while still keeping specialized utilities easy to find through search and filters.
Users choose ToolsMonk's developer tools because every tool runs entirely in the browser with no sign-up, no downloads, and no data leaving your device. Whether you are working from a shared computer, a locked-down corporate machine, or simply value your privacy, these utilities process everything client-side so your files and inputs are never uploaded to a remote server. The result is a fast, private experience that works the moment you open a tool in any modern browser.
Many workflows span more than one category. If you are working with files here, you may also find useful utilities in related sections across ToolsMonk—from converters and generators to analyzers and formatters. Each category page follows the same layout, so once you are familiar with one, navigating to a neighbouring category is seamless. Use the sidebar to jump between categories and build multi-step workflows without leaving the platform.
Showing 27 of 27 tools
Format, beautify, and validate JSON data.
Open ToolEncode and decode Base64 strings.
Open ToolEncode and decode URL components.
Open ToolDecode and inspect JWT tokens.
Open ToolGenerate MD5, SHA-1, SHA-256 hashes.
Open ToolTest and debug regular expressions.
Open ToolMinify HTML code for production.
Open ToolMinify CSS stylesheets.
Open ToolConvert JSON data to YAML format.
Open ToolConvert Markdown text to HTML.
Open ToolConvert your Markdown (.md) files to high-quality PDFs instantly. Fast, free, secure, and works directly in your browser with no installation or signup required.
Open ToolGenerate unique UUIDs (v4).
Open ToolConvert between HEX, RGB, HSL.
Open ToolGenerate TypeScript interfaces from JSON.
Open ToolGenerate strong, secure passwords.
Open ToolCompare code snippets and show differences.
Open ToolCalculate Unix file permissions.
Open ToolRemove whitespace from JSON for smaller payload size.
Open ToolBeautify and format SQL queries.
Open ToolFormat and beautify XML documents.
Open ToolEncode and decode HTML entities.
Open ToolParse and analyze HTTP response headers.
Open ToolBuild and visualize cron schedule expressions.
Open ToolCreate JWT tokens for testing and development.
Open ToolSend HTTP requests and inspect responses.
Open ToolGenerate multiple UUIDs at once (up to 10,000).
Open ToolCommon regex patterns with testing — ready to copy and use.
Open ToolCommon questions about developer tools, the tools available in this category, and how to choose the right workflow.