Developer Tools | The Free Tools Directory

.gitignore Generator7 options

The .gitignore Generator is a free online tool to create standard .gitignore files for your project language and IDE. It supports many languages, frameworks, editors, and OS presets and lets you preview and download the result. ([rootutils.com](https://rootutils.com/tools/gitignore-generator))

7 options💻 Developerbrowser-based privacy-focused devbolt

Base64 Encoder/Decoder8 options

Its Base64 tools support decoding to text or binary files with download and preview support. The site also provides related conversions and diagnostics, including binary-oriented outputs like hex dump views. Core converter features are free and accessible without mandatory paid plans.

8 options🛡️ Securitydeveloper-tools browser-based 10015

.env File Generator6 options

Their .env Generator offers presets for frameworks like Next.js, Node.js, React, Laravel, and Django, and includes common service variables (AWS, Stripe, Firebase). It can generate both .env and .env.example files with placeholders and supports copy/download. ([tanphatdigital.com](https://tanphatdigital.com/vi/tools/env-generator))

6 options💻 Developer

.htaccess redirection6 options

Generates 301 redirect code with options that include Apache .htaccess output, letting you produce redirect rules from old to new URLs. Useful for quick .htaccess redirect snippets. ([codebeautify.org](https://codebeautify.org/301-redirect-code-generator?utm_source=openai))

6 options💻 Developer

Real Estate Calculators6 options

Navigating the complexities of property transactions and investments requires precise financial planning. This comprehensive suite of real estate calculators provides users with the data needed to evaluate mortgage options, analyze rental yields, and assess property investment potential. Whether determining monthly payments or comparing the long-term benefits of buying versus renting, these tools simplify intricate calculations to support more informed housing decisions. Homebuyers, renters, and real estate professionals can utilize these specialized resources to gain clarity on diverse housing-related costs. The collection covers everything from initial down payment requirements and closing costs to ongoing property management expenses and appreciation rates. By offering a centralized location for diverse financial scenarios, the platform helps individuals manage their portfolios and understand the full fiscal impact of their real estate ventures.

6 options💻 Developer

Base64 to YAML5 options

This free tool decodes Base64 input directly into YAML output in the browser. It supports paste/upload input, automatic conversion, and copy/download actions. The page states conversion is client-side for privacy and requires no paid plan for basic use.

5 options🔐 Encoders & Decoders

Password Generator7 options

A random password generator to create strong and secure passwords. To ensure security, they are generated on the webpage without being sent over the internet.

7 options🛡️ Securitycalculator free internet

Battery charge manager6 options

This Battery Charge Time Calculator estimates charging duration using battery capacity, charging current, state of charge, and battery chemistry. It supports practical charge-time planning for devices and vehicles with formula-based outputs. The tool is interactive and free to use directly in the browser.

6 options💻 Developer

Screenshot of Azure AD PowerShell Generator

Azure AD PowerShell Generator5 options

Graph Explorer is a free web tool for testing Microsoft Graph endpoints and viewing generated code snippets, including PowerShell for supported operations. You can run Azure AD/Entra scenarios such as user and group management, then copy PowerShell commands for automation. It is actively maintained by Microsoft and does not require a paid plan to use basic functionality.

5 options💻 Developer

Bar graph maker5 options

Miro offers a free bar chart maker within its charting features, allowing users to create and present bar graphs directly on boards. It supports quick setup, customization, and collaborative editing. A free tier is available, while advanced limits and integrations are part of paid plans.

5 options💻 Developer

HTML Entity Encoder3 options

Developers and web designers often need to convert special characters into their corresponding HTML entities to ensure proper rendering across different browsers. HTML Entity Encoder provides a reliable method to transform sensitive characters—such as angle brackets, ampersands, and quotes—into standardized code that prevents browsers from misinterpreting them as functional HTML tags. This process is essential for anyone looking to display raw code snippets on a webpage or securely manage user input within a web application. The utility also integrates XSS prevention analysis, offering insights into how specific encoding choices contribute to site security. By substituting potentially malicious characters with safe entities, it helps mitigate the risk of cross-site scripting attacks that target vulnerabilities in data handling. Users can switch between encoding and decoding functions to verify their data or restore entities to their original plaintext format for editing and review.

3 options🔐 Encoders & Decodersbrowser-based privacy-focused devbolt

CSV TO JSON5 options

Converts CSV files to JSON format instantly with browser-based processing. Users can upload their CSV file and select the desired options for conversion, such as specifying data types or handling empty values. The tool then processes the file in the cloud and returns the converted JSON data directly in the browser. Developers, data analysts, and anyone dealing with large sets of tabular data would find this tool invaluable. It simplifies the process of converting CSV files, which are often used for data exchange, into a format more suitable for web applications and databases. Users appreciate its quick processing speed and ease of use, saving them time and effort in manual conversion processes.

5 options🔄 Data Format Convertersdeveloper-tools freeformatter developer

Image to PDF Converter2 options

Converting images into professional PDF documents becomes a seamless process with this versatile web-based converter. It allows users to combine multiple photos or graphics into a single, organized file directly from their browser. Whether working on a desktop or using a mobile device like an iPhone or Android, the interface adapts to ensure a smooth experience for gathering visual assets into a portable format. Developers and creative professionals often need to bundle screenshots, technical diagrams, or project documentation into a standardized document for sharing or archiving. By streamlining the conversion process, it eliminates the need for complex software or manual layout adjustments. The resulting PDFs maintain the clarity of the original images while offering the broad compatibility and structured layout inherent to the PDF standard.

2 options💻 Developer

Case converter5 options

Converts text between different cases such as lowercase, uppercase, title case, and sentence case. Users simply input their text and select the desired case conversion from the options provided. Ideal for anyone needing to standardize text formatting for readability or compatibility purposes.

5 options📝 Text & Encodingdeveloper-tools browser-based privacy-focused

Excel to JSON Converter2 options

Developers and data analysts often need to bridge the gap between traditional spreadsheets and modern web applications. Excel to JSON Converter simplifies this workflow by transforming standard XLSX or XLS files into structured JSON data. It handles the transition from cell-based layouts to object-oriented formats, making it easier to integrate legacy data or manually managed lists into software projects, APIs, and databases. The utility supports multi-sheet workbooks, allowing users to export entire datasets or specific tabs into a single JSON output. Custom formatting options ensure the resulting data structure aligns with specific project requirements, whether that involves mapping headers to keys or adjusting how null values and dates are handled. By automating the conversion process directly in the browser, it eliminates the need for complex scripts or manual data entry while maintaining data integrity across large collections.

2 options🔄 Data Format Converters

SQL Formatter4 options

SQL Formatter is a free online tool that helps you to format and beautify your SQL queries instantly. It supports various database systems including MySQL, PostgreSQL, SQLite, and more. With this tool, you can easily convert messy SQL code into clean, readable format without the need for any sign-up or registration.

4 options✨ Code Formatters & Validatorsdeveloper-tools browser-based privacy-focused

Regex Tester4 options

Tests regular expressions using a pattern library and provides explanations for matches. Users can input text and regex patterns to see if there are any matches, with detailed explanations for each match found. Developers and IT professionals looking to test and debug regex patterns would find this tool useful. It allows them to quickly verify if their regular expressions are working as expected, saving time on manual testing.

4 options🛡️ Securitydeveloper-tools browser-based privacy-focused

YAML to JSON Converter3 options

Seamlessly bridging the gap between two of the most popular data serialization formats, the YAML to JSON Converter provides a reliable way to transform configuration files and data structures. Developers and system administrators frequently use this utility when migrating settings between environments or preparing data for APIs that require strict JSON formatting. It handles the nuances of both formats, ensuring that complex hierarchies and nested objects remain intact during the translation process. The utility offers bidirectional functionality, allowing users to switch between YAML and JSON as their project requirements evolve. It includes comprehensive support for YAML-specific features such as comments and anchors, which are often lost in basic conversion scripts. By automating the transformation, the converter helps maintain data integrity and saves time when working with Kubernetes manifests, CI/CD pipelines, or web application configurations.

3 options🔄 Data Format Convertersdeveloper-tools browser-based privacy-focused

HTTP Status Codes2 options

Provides a detailed reference of HTTP status codes, allowing users to search and understand various HTTP response statuses. It serves as an invaluable resource for developers by offering clear explanations of each code's meaning and typical use cases. Useful for web developers, API creators, and anyone involved in backend systems who need to troubleshoot issues or ensure their applications are compliant with HTTP standards.

2 options💻 Developerdeveloper-tools browser-based privacy-focused

Morse Code Translator2 options

Converts messages between plain text and Morse code with ease. Users input their text, and the tool instantly translates it into Morse code dots and dashes or vice versa. Ideal for anyone needing to communicate in Morse code, including hams, emergency responders, and those learning the international distress signal. Helps users who need to send or receive messages using Morse code, such as radio operators, hikers, and individuals practicing distress signals. Also useful for educational purposes, allowing students and enthusiasts to learn about Morse code syntax and history.

2 options🧮 Miscellaneous CalculatorsTech and electronics calculators

Privacy Policy Generator2 options

Generates customized privacy policies for websites and apps, including GDPR, CCPA, and COPPA compliance sections. Users input details about their site or app, and the tool creates a tailored policy document that meets legal requirements. Businesses, developers, and organizations looking to ensure they comply with data protection regulations when handling user information would use this tool. It saves time and expertise by automating the creation of comprehensive privacy policies that adhere to GDPR, CCPA, and COPPA standards.

2 options✅ Compliancebrowser-based privacy-focused devbolt

HTTP Request Builder2 options

Constructs, sends, and analyzes HTTP requests directly from your browser using an interactive developer tool. Users can easily build custom requests by specifying method type, URL, headers, and body content. Results are displayed in detail, aiding in debugging and testing web applications. Developers and testers use this tool to validate API endpoints, test integrations, and ensure proper request handling. It saves time by allowing quick prototyping and troubleshooting without the need for external tools or plugins.

2 options🛡️ Securitybrowser-based privacy-focused devbolt

File Metadata Analyzer

Extracts EXIF/GPS data from photos, PDF properties, audio ID3 tags, and Office document metadata. Views GPS coordinates on Google Maps. Users can export CSV reports for detailed analysis. Developers, photographers, graphic designers, and anyone who needs to extract and analyze file metadata will find this tool invaluable. It saves time and effort in manually gathering data from various file types, allowing users to focus on creative tasks or project management.

1 option💻 Developer

Git Branch Visualizer

Helps users compare Git branching strategies visually by providing diagrams for GitFlow, GitHub Flow, and trunk-based development. Offers a simple interface to understand different approaches to managing code branches in version control systems. Developers, team leaders, and anyone involved in software development processes will find this tool invaluable for gaining insights into various Git branching methodologies, enabling them to choose the most effective strategy for their project.

1 option💻 Developer