Browser-first
All code processing runs locally. PHP only renders the shared page shell and configuration; your code is never posted to the server.
free online developer tools
Free online code cleaner, formatter, minifier, and validator.
Clean HTML, format CSS and JavaScript, validate JSON and XML, test regex, convert data, and analyze text without uploading your code. Processing stays on your device.
Status
Ready. Paste code, pick an action, and process locally.
workbench
Private, language-aware code tools in one workbench.
Paste code or load a file. The available actions adapt to the selected or detected language.
Metrics and quality signalsavailable after processing
support this project
Two easy ways to keep the cleaner running.
Chip in once or toss a few bucks in monthly. Both options open the matching section on the support page, where Stripe handles checkout.
product defaults
Fast local processing without sending code to a server.
Offline capable
Core application assets are cached after the first visit, so the toolbox can keep working without a network connection.
Accessible by design
Semantic structure, labels, keyboard focus, theme contrast, live status updates, and responsive reflow are built in.
popular developer utilities
Clean and transform common code formats.
Use one interface for routine cleanup, validation, conversion, extraction, and code-quality checks.
HTML cleaner and formatter
Beautify markup, remove comments or attributes, strip tags, extract links and headings, inspect forms, and run basic accessibility checks.
CSS formatter and minifier
Format CSS, SCSS, and Less; remove comments; compress safe whitespace; extract custom properties; and review selector specificity.
JavaScript and TypeScript formatter
Format JavaScript, TypeScript, JSX, and TSX, inspect imports, analyze code metrics, and use encoding or regex utilities.
JSON formatter and converter
Validate and sort JSON, collapse it to one line, flatten paths, or convert JSON to CSV, XML, PHP arrays, TypeScript types, query strings, and environment files.
XML and structured-data tools
Format and validate XML, XSLT, XHTML, and SVG; inspect namespaces and structure; or convert compatible XML and JSON data.
Regex and text tools
Test patterns, extract or replace matches, generate snippets, normalize lines, change case, calculate hashes, convert encodings, and analyze readability.
frequently asked questions
How the private code cleaner works.
Does Free Code Cleaner upload my code?
No. The workbench sends processing tasks to browser workers running on your device. Your pasted code is not posted to the application server.
Which languages and formats are supported?
HTML, CSS, SCSS, Less, JavaScript, TypeScript, JSX, TSX, JSON, XML, XSLT, XHTML, SVG, SQL, CSV, TSV, Markdown, YAML, TOML, INI, shell scripts, Python, Ruby, Java, C, C++, C#, Go, Rust, GraphQL, and plain text are recognized.
Can it work offline?
Yes. After the browser caches the application assets, the core cleaner, formatter, converter, and analysis tools remain available offline.
Why are some actions faster than others?
Most transformations run in a bounded pool of Web Workers. A small number of HTML and XML inspection actions require the browser DOM parser and are loaded on demand.