Coding Tools – Small Tools. Big Help.
Welcome to SmallToolsOnline.com — your go-to toolkit for developers and programmers who need fast, reliable browser-based coding utilities. Our collection of smart coding tools helps you format, encode, decode, and analyze code instantly — all without installing any software or uploading your files.
From simple JSON formatters and Base64 encoders to advanced minifiers, code beautifiers, and data converters, every tool runs directly in your browser using efficient JavaScript processing.
Whether you're a web developer debugging code, a designer optimizing scripts, or a student learning programming — Small Tools Online helps you do it faster, smarter, and safer.
All Coding Tools
Write and run JS code directly in your browser.
Edit CSS rules and view changes instantly.
Combine HTML + JS and see console output live.
Format, validate and prettify JSON in browser.
Minify CSS code, removing whitespace and comments.
Format and indent JavaScript code for readability.
Remove whitespace comments from HTML code in browser.
Convert CSS rules into inline style attributes for HTML.
Obfuscate JS code to make it harder to read in browser.
Automatically add vendor prefixes to CSS properties.
Encode characters into HTML entity codes.
Decode HTML entities back to characters.
Remove whitespace/comments to reduce JSON size.
Beautify and format SQL statements.
Minify SVG markup for smaller file size.
Check JS code for errors and style violations in-browser.
Validate CSS code for errors, warnings and usage.
Check HTML markup for semantics and errors in browser.
Visual tool to generate CSS grid layout code.
Convert raw SVG markup into JSX format for React.