Developer tools
This section is for programmers, web developers and SEO specialists, and it collects small utilities that get opened again and again during the day. For data there is a JSON formatter and validator that tidies the code and points to the error, an Excel to JSON converter for moving spreadsheet data into apps, and a JavaScript formatter that makes minified code readable.
For SEO and marketing work you get a UTM link builder for tracking campaigns in your analytics, a page title generator, a robots.txt generator, a Schema.org JSON-LD generator and an .htaccess redirect generator. There are also HTML link and mailto link generators for pages and emails.
Helpers include a URL decoder for reading links full of percent codes, a random token generator for temporary keys, an IP subnet calculator for working out address ranges, and a Morse code converter. Everything runs locally in your browser, so your code and data are never sent to a server, and you can copy the result straight into your project.
Excel to JSON
Convert Excel files (XLSX, XLS) into developer-ready JSON.
Developer tools Open tool →Email Link Generator
Generate a ready-made mailto link with a pre-filled subject and body.
Developer tools Open tool →.htaccess Redirect Generator
Generate ready-made 301 redirect rules for your .htaccess file.
Developer tools Open tool →HTML Link Generator
Easily generate an HTML tag from your link and text.
Developer tools Open tool →IP Subnet Calculator
Calculate subnet details and host count from an IP address and netmask.
Developer tools Open tool →JS Formatter
Format and beautify JavaScript code to make it clean and readable.
Developer tools Open tool →Page Title Generator
Generate an SEO-optimized page title with the ideal length.
Developer tools Open tool →Random Token Generator
Generate a secure random token for authentication and APIs.
Developer tools Open tool →Robots.txt Generator
Generate a correct robots.txt file to control search engine crawling.
Developer tools Open tool →Schema.org JSON-LD Generator
Generate structured Schema.org data to improve your site's search appearance.
Developer tools Open tool →URL Decoder
Decode any encoded URL back into its original readable form.
Developer tools Open tool →JSON Formatter & Validator
Paste JSON, format it, and validate it instantly in your browser.
Developer tools Open tool ←Morse Code Converter
Convert any text to Morse code, or decode Morse code back to normal text, instantly.
Developer tools Open tool ←UTM Link Builder
Build a complete UTM tracking link for your marketing campaigns easily, with no typos.
Developer tools Open tool ←