Every developer tool you need, in one place
Format, validate, convert, encode and generate code and data for free. Everything runs in your browser.
Format & validate
- JSON Formatter Format and beautify JSON with the indentation you like.
- JSON Validator Check JSON for syntax errors and see exactly where they are.
- JSON Minifier Make JSON smaller by removing all unnecessary whitespace.
- JSON Schema Validator Check JSON data against a JSON Schema and list every error.
- XML Formatter Pretty-print XML with clean indentation.
- XML Validator Check XML for syntax errors.
- YAML Validator Check YAML files for syntax errors and preview the parsed data.
- HTML Formatter Format and indent HTML code.
- CSS Formatter Beautify or minify CSS code.
- JavaScript Formatter Format and indent JavaScript code.
- SQL Formatter Format SQL queries for readability, for many SQL dialects.
- Regex Tester Test regular expressions against sample text and see every match and group.
- Diff Checker Compare two texts or code snippets and highlight the differences.
Encode, decode & hash
- Base64 Encoder/Decoder Encode or decode text and files with Base64.
- URL Encoder/Decoder Percent-encode or decode URLs and URL components.
- HTML Entity Encoder Encode text into HTML entities or decode entities back to text.
- JWT Decoder Decode a JSON Web Token and inspect its header, payload and expiry.
- Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files.
- HMAC Generator Generate a keyed HMAC signature with SHA-1, SHA-256, SHA-384 or SHA-512.
- UUID Generator Generate random UUIDs (version 4) or time-ordered UUIDs (version 7).
- URL Parser Break a URL into protocol, host, path, query parameters and fragment.
- Cookie Parser Parse a Cookie or Set-Cookie header into names, values and attributes.
- Unix Timestamp Converter Convert Unix timestamps to readable dates and back.
- Number Base Converter Convert numbers between binary, octal, decimal, hexadecimal and any other base.
Data conversion
- CSV to JSON Convert CSV rows into JSON objects or arrays.
- JSON to CSV Convert a JSON array into CSV rows.
- JSON to XML Convert JSON data into XML.
- XML to JSON Convert XML data into JSON.
- YAML to JSON Convert YAML data into JSON.
- JSON to YAML Convert JSON data into YAML.
- TSV to CSV Convert tab-separated values into comma-separated values.
- Excel to CSV Convert the sheets of an Excel file (.xlsx) into CSV.
- CSV Viewer Open a CSV file as a readable, sortable and searchable table.
- CSV Cleaner Trim whitespace, remove empty rows and tidy up CSV files.
- CSV Deduplicator Remove duplicate rows from CSV data, by whole row or by chosen columns.
Markdown & HTML
CSS & design
- Color Code Converter Convert colors between HEX, RGB, HSL, HWB and CMYK.
- CSS Gradient Generator Create linear, radial and conic gradients visually and copy the CSS.
- CSS Units Converter Convert between px, rem, em, pt, vw, vh and other CSS units.
- SVG Path Editor Preview, inspect, move, scale and round SVG path data.
Code & config generators
- cURL to Code Convert cURL commands into JavaScript, Python or PHP code.
- Cron Expression Generator Build cron expressions, read them in plain English and see the next run times.
- Gitignore Generator Generate .gitignore rules for the languages, frameworks and tools you use.
- Nginx Config Generator Generate an Nginx server block for static sites, PHP apps, reverse proxies and redirects.
- .htaccess Generator Create common Apache .htaccess rules for redirects, HTTPS, caching and security.
- Docker Compose Generator Build a docker-compose.yml from databases, caches and other common services.
- Fake Data Generator Generate sample names, emails, addresses and more as JSON, CSV or SQL.
- JSON Mock Data Generator Generate JSON test data from a template with placeholders.
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Why use our tools?
- Free
- No sign-up, no limits and no paywalls. Every tool is free to use.
- Private
- Your code and data never leave your browser. Nothing is uploaded to our server.
- Made for developers
- Fast, keyboard-friendly tools with copy and download buttons where you need them.