Free Online Developer Tools
ToolHaro’s free online developer tools provide simple and practical utilities for programmers, web developers, software engineers, and technical users. These browser-based tools help with common development tasks such as formatting data, validating code, encoding and decoding information, and generating unique values.
Our Developer Tools category includes useful utilities such as JSON Formatter, JSON Validator, Base64 Encoder and Decoder, and UUID Generator. Use the JSON Formatter to organize and format JSON data into a clean, readable structure. The JSON Validator helps identify invalid JSON and makes it easier to check data before using it in applications or APIs. The Base64 Encoder and Decoder can convert text and data between regular and Base64 formats, while the UUID Generator quickly creates unique identifiers for development projects.
ToolHaro’s developer tools are designed to be fast, straightforward, and easy to use without requiring additional software or complicated setup. They can be useful when debugging, testing, developing websites, working with APIs, or handling structured data.
Whether you are an experienced developer, a student learning pro
Need to collect information from a web page without copying it by hand? The Toolharo Web Data Extractor does it for you. Paste a page URL, choose what you need (page title and meta tags, clean text, headings, links, images, emails, tables or structured data) and get organized results in seconds. It is useful for […]
Encode text, files, or data into Base64 format quickly with our free online Base64 Encoder.Simply enter your content, generate the encoded result, and copy it instantly for use in development, APIs, and web applications.
A robots.txt file tells search engines which parts of your website they can and cannot crawl. A small mistake in it can hide your best pages from Google, so it pays to get it right. Our free Robots.txt Generator lets you build a clean, error-free file without memorising any syntax. Pick a preset for WordPress […]
Working with messy, unformatted JSON can be a headache — especially when it’s all squeezed onto one line or pulled from an API response. Toolharo’s JSON Formatter cleans it up instantly. Paste your JSON below, choose your indentation style, and get a perfectly formatted, easy-to-read result. You can also validate your JSON to catch syntax […]
Validate JSON online with ease using our free JSON Validator to quickly detect syntax errors, formatting issues, and invalid data structures.Paste your JSON, check it instantly, and identify errors faster without installing any software.
URL Encoder online tool to quickly encode and decode URLs, text, and special characters. Free, fast, secure, and easy to use on any device. A URL Encoder is a useful online tool for converting URLs, text, and special characters into a URL-safe format. When a URL contains spaces, symbols, or special characters, encoding them helps […]
A UUID Generator is a free online tool for creating universally unique identifiers (UUIDs) quickly and easily. Toolharo’s Advanced UUID Generator supports UUID v1, UUID v4, and UUID v5, giving developers, website owners, testers, and other users multiple ways to generate unique identifiers for their projects. You can generate a single UUID or create multiple […]
Create an XML sitemap for your website in seconds. Crawl your site, set priority and frequency, and download sitemap.xml for Google. Free, no signup.
A robots.txt file tells search engines which parts of your website they can and cannot crawl. A small mistake in it can hide your best pages from Google, so it pays to get it right. Our free Robots.txt Generator lets you build a clean, error-free file without memorising any syntax. Pick a preset for WordPress
Free Robots.txt Generator – Create a Robots.txt File Online Read More »
Need to collect information from a web page without copying it by hand? The Toolharo Web Data Extractor does it for you. Paste a page URL, choose what you need (page title and meta tags, clean text, headings, links, images, emails, tables or structured data) and get organized results in seconds. It is useful for
AI Web Data Extractor – Extract Text, Links & Images Online Read More »
Create an XML sitemap for your website in seconds. Crawl your site, set priority and frequency, and download sitemap.xml for Google. Free, no signup.
XML Sitemap Generator Online Read More »
URL Encoder online tool to quickly encode and decode URLs, text, and special characters. Free, fast, secure, and easy to use on any device. A URL Encoder is a useful online tool for converting URLs, text, and special characters into a URL-safe format. When a URL contains spaces, symbols, or special characters, encoding them helps
A UUID Generator is a free online tool for creating universally unique identifiers (UUIDs) quickly and easily. Toolharo’s Advanced UUID Generator supports UUID v1, UUID v4, and UUID v5, giving developers, website owners, testers, and other users multiple ways to generate unique identifiers for their projects. You can generate a single UUID or create multiple
Encode text, files, or data into Base64 format quickly with our free online Base64 Encoder.Simply enter your content, generate the encoded result, and copy it instantly for use in development, APIs, and web applications.
Validate JSON online with ease using our free JSON Validator to quickly detect syntax errors, formatting issues, and invalid data structures.Paste your JSON, check it instantly, and identify errors faster without installing any software.
Working with messy, unformatted JSON can be a headache — especially when it’s all squeezed onto one line or pulled from an API response. Toolharo’s JSON Formatter cleans it up instantly. Paste your JSON below, choose your indentation style, and get a perfectly formatted, easy-to-read result. You can also validate your JSON to catch syntax
JSON Formatter & Validator Read More »