All Developer Tools
Explore every developer utility available on DevToolsHub. All tools run in your browser and are free to use.
JSON Tools
Validate, format, and transform JSON data
- JSON FormatterFormat and beautify JSON with indentation
- JSON ValidatorValidate JSON syntax and show error location
- JSON MinifierRemove whitespace and compress JSON
- JSON DiffCompare two JSON objects and highlight differences
- JSON ViewerTree view structure with expand/collapse nodes
- JSON to CSVConvert JSON array or object to CSV
- JSON to YAMLConvert JSON to YAML format
- YAML to JSONConvert YAML to JSON format
- JSON to XMLConvert JSON to XML format
- XML to JSONConvert XML to JSON format
- JSON to NDJSONConvert JSON array to newline-delimited JSON
- NDJSON to JSONConvert newline-delimited JSON to JSON array
- JSON FlattenerFlatten nested JSON to dot-path keys
- JSON Sort KeysSort JSON object keys alphabetically
- JSON Path ExtractorExtract value from JSON by dot path
Encoding Tools
Encode and decode data in various formats
- Base64 EncodeEncode text to Base64
- Base64 DecodeDecode Base64 to text
- URL EncodeEncode text for URL parameters
- URL DecodeDecode URL-encoded text
- HTML EncodeEncode text to HTML entities
- HTML DecodeDecode HTML entities to text
- Hex EncodeEncode text to hexadecimal
- Hex DecodeDecode hexadecimal to text
- Text to BinaryConvert text to binary (0 and 1)
- Binary to TextConvert binary to text
- ROT13Encode or decode ROT13 text
- Unicode EscapeEncode text to \uXXXX
- Unicode UnescapeDecode \uXXXX to text
- HTML to TextStrip HTML tags to plain text
- JSON EscapeEscape string for JSON
- JSON UnescapeUnescape JSON string
- Number Base ConverterConvert between decimal, hex, binary, octal
- Hex to RGBConvert hex color to rgb()
- RGB to HexConvert rgb() to hex color
Security Tools
JWT, hashing, and password security utilities
- JWT DecoderDecode header, payload, display claims, validate expiration
- JWT GeneratorCreate JWT with HS256 and custom payload
- Hash GeneratorMD5, SHA-1, SHA-256, SHA-512 hashes
- Password GeneratorCustom length, numbers, symbols
- Password Strength CheckerEvaluate strength and security suggestions
- HMAC GeneratorGenerate HMAC (SHA-1/256/384/512) from key and message
- JWT Signature VerifierVerify HS256/384/512 JWT signature with shared secret
- Webhook Signature VerifierVerify GitHub, Stripe, Slack, GitLab webhook signatures
- Secret MaskerMask JWTs, API keys, and tokens in logs before sharing
- Password Policy GeneratorGenerate password with policy (length, character types)
- JWT PlaygroundDecode, generate, and verify JWT in one page
Database Tools
SQL formatting, minification, and result conversion
Code Tools
Format and minify HTML, CSS, and JavaScript with syntax highlighting
- HTML FormatterBeautify HTML with indentation and syntax highlighting
- CSS FormatterBeautify CSS with consistent indentation
- JavaScript FormatterBeautify JavaScript with readable formatting
- JS MinifierMinify JavaScript to reduce file size
- CSS MinifierMinify CSS by removing whitespace and comments
- HTML MinifierMinify HTML for production
Network Tools
IP lookup, DNS, user agent parsing, and HTTP header inspection
- IP LookupDisplay IP information, country, and ISP
- DNS LookupQuery DNS records for a domain
- User Agent ParserParse browser and device information from user agent
- HTTP Header ViewerShow request headers sent by your browser
- HTTP Status Code LookupLook up HTTP status code meaning
- cURL to Fetch/AxiosConvert cURL command to JavaScript fetch or axios code
- Fetch/Axios to cURLConvert JavaScript fetch or axios snippet to cURL command
- Log FormatterPretty-print JSON log lines (NDJSON); optional filter by level
- HTTP Request BuilderBuild HTTP request and get cURL, fetch, or axios code
Text Tools
Text manipulation and analysis
- Word CounterCount words, characters, lines, and paragraphs
- Case ConverterConvert text to upper, lower, title, or sentence case
- Text DiffCompare two texts and highlight line-by-line differences
- Remove Duplicate LinesRemove duplicate lines, keeping first occurrence
- Sort LinesSort lines alphabetically (A–Z or Z–A)
- Reverse TextReverse line order or reverse characters
- Slug GeneratorConvert text to URL-friendly slug
- Lorem Ipsum GeneratorGenerate placeholder Lorem Ipsum text
- Normalize SpacesTrim and collapse spaces and newlines
Random & UUID
UUID generation, validation, random strings, and passwords
Time Tools
Timestamp, epoch, and timezone conversion with real-time updates
Regex Tools
Test, generate, and learn regular expressions
Markdown Tools
Convert and preview Markdown
Data Tools
CSV, TSV, and data format conversion