Developer Utility Tools
Explore a collection of free online developer tools designed to simplify everyday programming tasks. Compare text, format code, clean data, generate website icons and analyze files directly in your browser.
12 Free Developer ToolsText Diff Checker
Compare two text versions and identify added, removed and unchanged lines quickly.
Open Tool →Word & Character Counter
Count words, characters, sentences, paragraphs and estimate reading time.
Open Tool →Duplicate Line Remover
Remove repeated lines from text and keep a clean list of unique entries.
Open Tool →Text Line Sorter
Sort text lines alphabetically, numerically or by line length.
Open Tool →Whitespace Remover
Clean extra spaces, remove blank lines and normalize text whitespace.
Open Tool →String Escape & Unescape
Encode and decode special characters for JSON, JavaScript, HTML and URLs.
Open Tool →SQL Formatter
Format SQL queries with structured clauses, indentation and readable layout.
Open Tool →Online Code Formatter
Beautify HTML, CSS, JavaScript, TypeScript, JSON and XML code.
Open Tool →HTML Live Preview
Write HTML and preview webpage layouts in desktop, tablet and mobile sizes.
Open Tool →Favicon Generator
Create custom website favicons from text, emojis or uploaded images.
Open Tool →JSON to HTML Table
Convert JSON objects and arrays into readable HTML tables.
Open Tool →File Metadata Analyzer
Inspect file names, formats, sizes, image dimensions and media details.
Open Tool →Try another search keyword.
Free Online Developer Tools
Welcome to the Developer Utility Tools collection on Master Ultron. These browser-based utilities help developers, programmers, students and web creators complete common development tasks more efficiently.
What can you do with these tools?
- Compare text and find differences between versions.
- Count words and characters or organize text lines.
- Clean duplicate entries and unwanted whitespace.
- Format SQL queries and programming code.
- Preview HTML layouts and generate website favicons.
- Convert JSON data into HTML tables.
- Inspect file metadata directly in your browser.
Privacy and browser-based processing
Many tools on this page process data directly in your browser. Check the privacy information on each individual tool page before using it with sensitive or confidential information.
