Development
Discover all our free tools for the Development category.
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Converters
9 toolsBase64 Encoder / Decoder
Encode and decode text, URLs, or images to Base64 directly in your browser.
Curl to Fetch Converter
Transform your Curl commands into ready-to-use JavaScript Fetch code with support for headers and request body.
Data Chef
Manipulate, encode, decode and transform your data through a chainable recipe system.
Hex ↔ ASCII Converter
Easily convert ASCII text to hexadecimal and vice versa.
Expert Hex Calculator
Arithmetic and bitwise operations (AND, OR, XOR...).
HTML Entity Encoder / Decoder
Convert your special characters to HTML entities (e.g. & to &) for secure display in your web pages.
SVG to JSX Converter
Convert SVG files into ready-to-use React JSX components. Auto-cleanup, formatting and advanced options for clean, optimized code.
URL Encoder / Decoder
Encode and decode URLs and special character strings according to RFC 3986 standards. Parse and rebuild your URLs component by component.
YAML / JSON Converter
Instantly convert your YAML files to JSON and vice versa with validation and automatic formatting.
Code Generators
7 toolsCode to Image Generator
Transform your code snippets into beautiful screenshots ready for sharing on social media.
Crontab Generator
Create your cron expressions easily with a visual interface. Get a human-readable description and the exact syntax.
Git Commands Helper
Quickly generate the most common Git commands for setup, branches, commits, and error handling.
JS Console Runner
Run JavaScript code instantly in a secure environment with real-time console capture.
Linux Commands Encyclopedia
Comprehensive reference of POSIX / Linux commands, common flags, and I/O stream redirection. Master the terminal.
Password Generator
Generate strong and secure passwords instantly, 100% in your browser.
UUID / GUID Generator
Generate Universally Unique Identifiers (UUID) versions v1, v4, and v7 instantly.
Formatters
3 toolsCSS Minifier
Reduce the size of your CSS files by removing unnecessary spaces and comments to improve loading performance.
JS Minifier
Compress your JavaScript scripts by removing unnecessary characters to speed up your web page loading.
XML Formatter
Format, clean, and validate your XML data instantly with customizable indentation.
Validators
2 toolsComplete Web and Software Development Universe on Dolf.in
Modern development demands constant agility and access to reliable tools to automate repetitive tasks. Whether you are a seasoned frontend developer, a backend engineer, or a systems administrator, Dolf.in's Development category is designed to be your daily digital Swiss Army knife.
Why use our development tools?
Unlike many platforms that require heavy dependency installations or send your data to remote servers, Dolf.in prioritizes a 100% Client-Side (Serverless) approach. This means your code, API keys, or configuration files never leave your browser. Security and privacy are at the heart of our architecture.
A complete range for every stage of your workflow
Our tool catalog covers the entire lifecycle of a development project:
- Code Formatting and Cleaning: Don't waste time with malformed JSON or unreadable XML. Our formatters apply best indentation practices instantly.
- Performance Optimization: Reduce the weight of your resources with our CSS and JavaScript minifiers. Fewer kilobytes mean a better Core Web Vitals score for your site.
- Data Conversion: Switch from YAML to JSON, SVG to JSX (React), or encode your strings in Base64 in a flash.
- Debugging and Analysis: Inspect your JWT tokens, test your regular expressions (Regex), or check your API request headers without leaving your working tab.
Tools designed by developers, for developers
Every utility in this category addresses real-world problems encountered in production. We pay special attention to:
- Execution speed: No server loading time.
- Ergonomics: A clean interface, without intrusive advertising, to stay focused on your code.
- Accessibility: Free tools, available anywhere, with no user account required.
Enhance your daily productivity
The time saved by using tools like the Crontab generator or the Git command assistant allows you to focus on what matters: the business logic of your applications. Browse our subcategories and discover how Dolf.in can simplify your development environment today.