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Code Formatters
19 formatters — Beautify and reformat JSON, SQL, CSS, and HTML code
Beautify and reformat JSON, SQL, CSS, HTML, and other code for readability.
Binary/Hex
Binary / Hex Converter & Formatter
Convert between binary, hexadecimal, decimal, octal, and ASCII text instantly. Accepts space-separated or continuous input — client-side, no data sent.
Beautifier
Code Beautifier
Beautify HTML, CSS, or JavaScript with consistent indentation and structure. Rule-based, runs entirely in your browser — your code is never uploaded anywhere.
Minifier
Code Minifier
Strip whitespace and comments from HTML, CSS, or JavaScript to reduce file size. Runs entirely in your browser — your code is never uploaded anywhere.
CSS
CSS Formatter
Beautify raw or minified CSS with proper indentation and one rule per line. Runs entirely in your browser — your stylesheets are never uploaded anywhere.
cURL→Code
cURL to Code Converter
Convert a cURL command into Python requests, JavaScript fetch, or Node.js axios code instantly. Paste any cURL command and get working code in your language.
HTML
HTML Formatter
Beautify and indent HTML markup instantly — paste your code, choose indent size, and get clean readable HTML. Runs entirely in your browser, nothing uploaded.
HTML→MD
HTML to Markdown Converter
Convert HTML to Markdown instantly in your browser. Handles headings, links, lists, bold, italic, code blocks, and blockquotes. No data uploaded.
JS→JSON
JavaScript Object to JSON Formatter
Convert a JavaScript object literal to valid JSON instantly. Handles unquoted keys, single quotes, trailing commas, and comments. In-browser — nothing uploaded.
JSON
JSON Formatter/Beautifier
Paste raw JSON and instantly beautify it with proper indentation, or minify it to save space. Runs entirely in your browser — nothing is uploaded anywhere.
JSON Min
JSON Minifier
Minify JSON by stripping all whitespace and formatting. Optionally sort keys alphabetically. Runs entirely in your browser — nothing is uploaded anywhere.
JSON→SQL
JSON to SQL INSERT
Convert a JSON array of objects to SQL INSERT statements instantly. Supports MySQL, PostgreSQL, and SQLite dialects. In-browser — data never uploaded.
JSON→TS
JSON to TypeScript Interface
Convert any JSON object to a TypeScript interface instantly. Generates nested interfaces, array types, and union types. In-browser, no data uploaded.
JSON→YAML
JSON to YAML Converter
Convert JSON to YAML instantly — paste your JSON and get clean, properly indented YAML output. Runs entirely in your browser, nothing uploaded or stored.
JSON→Zod
JSON to Zod Schema
Generate a Zod validation schema from any JSON object instantly. Produces nested z.object(), z.array(), and z.string() schemas — in-browser and free.
Log Formatter
Log File Formatter
Format, clean, and filter log files in your browser. Normalises timestamps, highlights log levels, and filters by severity. No file upload — paste and process.
MD→HTML
Markdown to HTML Converter
Convert Markdown to HTML instantly in your browser. Handles headings, lists, links, and horizontal rules. No upload needed, runs entirely client-side.
SQL
SQL Formatter
Format and beautify SQL queries with proper indentation and keyword casing. Runs entirely in your browser — your queries are never uploaded or stored anywhere.
XML
XML Formatter
Pretty-print and validate XML with proper indentation instantly. Uses your browser's built-in parser — your XML is never uploaded or stored anywhere.
YAML→JSON
YAML to JSON Converter
Convert YAML to JSON instantly — paste your YAML and get clean, properly formatted JSON output. Runs entirely in your browser, nothing uploaded or stored.
About Code Formatters
The Code formatters category covers the most common structured languages used by developers, data engineers, and system administrators — JSON, CSS, HTML, SQL, and XML — providing both beautification (readable indented output) and minification (compact production output) from the same tools.
Why code formatting matters
Unformatted code is technically valid but practically unreadable. A 200-line CSS file with no line breaks is impossible to audit; a minified HTML page is impossible to debug; a JSON blob with no indentation is impossible to scan visually. Formatting is not optional for any code that humans need to read — it is a prerequisite for debugging, code review, version control diff readability, and onboarding new developers to a codebase.
Minification is equally important in the other direction: every unnecessary byte in a CSS file or JSON API response is additional network cost. On mobile connections — the majority of Indian web traffic — the difference between a 12 KB minified stylesheet and a 42 KB formatted one is measurable in page render time.
Tools in this category
The JSON Formatter handles the most common need: taking compact or poorly indented JSON and producing a clean, human-readable output with configurable indent size. It also validates syntax in the process — any parse error is reported with position information. The JSON Minifier takes the reverse direction, stripping all whitespace from valid JSON.
The CSS Formatter indents selectors, properties, and media queries consistently. The HTML Formatter structures markup hierarchically. The SQL Formatter capitalises keywords and aligns clauses, making complex multi-table queries readable. The XML Formatter adds indentation to nested element trees.
For mixed or unknown input, the Code Beautifier and Code Minifier provide general-purpose beautification and compression.
Privacy and safety
All formatting runs in your browser. No code is sent to any server — pasting internal configuration, database schemas, or proprietary stylesheets is safe.
Frequently Asked Questions
The Code category includes formatters for the most widely used structured data and markup languages: the [JSON Formatter](/json-formatter/) for pretty-printing and validating JSON, the [JSON Minifier](/json-minifier-formatter/) for compressing JSON for production, the [CSS Formatter](/css-formatter/) for beautifying stylesheets, the [HTML Formatter](/html-formatter/) for readable HTML markup, the [SQL Formatter](/sql-formatter/) for clean query layout, and the [XML Formatter](/xml-formatter/) for structured XML documents.
A formatter (also called a beautifier) adds consistent indentation, line breaks, and spacing to make code readable for humans. A minifier does the opposite — it strips all unnecessary whitespace, comments, and line breaks to reduce file size for production use. For example, the [JSON Formatter](/json-formatter/) makes a compact JSON string human-readable; the [JSON Minifier](/json-minifier-formatter/) compresses that same JSON to the smallest possible representation for API responses or configuration files.
No. For all formats covered here — JSON, CSS, HTML, SQL, and XML — whitespace and indentation are not semantically meaningful (with the exception of inline styles and pre-formatted HTML blocks, which these tools preserve). Formatted and minified versions of the same code behave identically when parsed or executed. The only difference is readability for humans.
Unformatted SQL is notoriously hard to read — a 10-table JOIN query written on one line is nearly impossible to audit or debug. The [SQL Formatter](/sql-formatter/) breaks the query onto logical lines, capitalises SQL keywords consistently, and indents subqueries and conditions. Formatted SQL is faster to peer-review, easier to version-control (line-level diffs become meaningful), and reduces the risk of missing a logic error in a WHERE clause or JOIN condition.
Minify CSS, JSON, and HTML when serving them over the network in production — smaller files mean faster page loads and lower bandwidth consumption. For internal configuration files checked into version control, use formatted (readable) versions instead, so diffs in pull requests remain meaningful. Never commit minified code to source control; run minification as part of the build pipeline. The [Code Minifier](/code-minifier-formatter/) covers JavaScript, CSS, and HTML.
The [HTML Formatter](/html-formatter/) adds consistent indentation and line breaks between elements to make the document structure visible — it does not modify attributes, reorder elements, or alter content. Inline elements and text nodes inside block elements are preserved as-is. Self-closing tags and void elements (br, hr, img, input) are kept in their original form. The output is structurally identical to the input.
Yes. The [JSON Formatter](/json-formatter/) parses the input using a full JSON parser before formatting it. If the input contains a syntax error — a trailing comma, an unquoted key, a missing bracket — the formatter reports the error and the approximate position rather than producing garbled output. For a dedicated pass/fail validation tool with a clear Valid/Invalid badge, use the [JSON Validator](/json-validator/).
No. All formatting in this category runs entirely in your browser using JavaScript. Your code is never sent to any server, stored in a database, or shared with any third party. This makes the tools safe to use with internal configuration files, database schemas, proprietary CSS, and other sensitive code. The tools work fully offline once the page has loaded.
The most common convention is 2 spaces for JSON (used by Node.js, npm, Prettier defaults) and either 2 or 4 spaces for CSS and HTML depending on the project style guide. Google's style guide uses 2 spaces; many enterprise teams use 4. Tabs are used in some projects (Makefile-style) but are rare in JSON. Each formatter on this platform lets you choose the indent size — the default is 2 spaces, which matches the most widely used open-source conventions.
The [CSS Formatter](/css-formatter/) preserves all vendor-prefixed properties (-webkit-, -moz-, -ms-) and formats them at the same indentation level as their standard counterparts. Media queries are formatted with the @media rule on its own line, the opening brace at the end, and nested rules consistently indented. Custom properties (CSS variables) defined in :root or other selectors are also formatted consistently.
The [Code Beautifier](/code-beautifier-formatter/) is a general-purpose beautifier that handles multiple languages from a single input box — useful when you have a mixed snippet or aren't sure which specific formatter to use. The individual language formatters (JSON, CSS, HTML, SQL, XML) are language-specific and apply tighter rules tailored to each format — for example, the SQL Formatter capitalises keywords, which a generic beautifier does not. Use the specific formatter when you know the language.
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