Developer Tools
Developer Tools
Use browser-based formatter, validator, JSON, SQL, regex, JWT, query-string, and hashing tools for fast debugging, cleanup, inspection, and copy-ready results.
Format, Validate, Inspect, Test, And Clean Up Developer Data
This hub groups practical developer tools for JSON workflows, SQL formatting, validators, regex testing, query-string parsing, JWT inspection, hashes, and other common debugging tasks.
XML Formatter
Format XML online with readable indentation, copy, download, and sample input support.
JSON Formatter
Format JSON online with readable indentation, copy, download, and sample input support.
YAML Formatter
Format YAML online with readable indentation, copy, download, and sample input support.
HTML Formatter
Format HTML online with readable indentation, copy, download, and sample input support.
CSS Formatter
Format CSS online with readable indentation, copy, download, and sample input support.
JavaScript Formatter
Format JavaScript online with readable indentation, copy, download, and sample input support.
SQL Formatter & Beautifier
Format SQL online with readable indentation, copy, download, and support for MySQL, PostgreSQL, and BigQuery.
XML Validator
Validate XML online and get a clear success or error result with sample input, copy, and download support.
JSON Validator
Validate JSON online and get a clear success or error result with sample input, copy, and download support.
YAML Validator
Validate YAML online and get a clear success or error result with sample input, copy, and download support.
HTML Validator
Validate HTML online and get a clear success or error result with sample input, copy, and download support.
Markdown Editor & Preview
Write markdown online with live preview for README drafts, documentation, notes, content mockups, and quick browser-based editing.
Lorem Ipsum Generator
Generate lorem ipsum placeholder text online for mockups, wireframes, content previews, typography tests, and layout work.
UUID / ULID Generator
Generate UUID v4 and ULID values online for databases, APIs, logs, testing, and sortable identifier workflows.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes online for checksums, quick comparisons, integrity checks, and debugging workflows.
HMAC Generator
Generate HMAC signatures online for API signing, webhook debugging, authentication flows, and request verification.
Slug Generator
Convert text into a URL-safe slug online for blog posts, page URLs, CMS entries, filenames, and route names.
Word & Character Counter
Count words, characters, lines, and paragraphs online for forms, copywriting, prompts, resumes, metadata, and general text cleanup.
Case Converter
Convert text into camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, Title Case, lowercase, and UPPERCASE online for code, filenames, env vars, and content cleanup.
Text Sorter & Deduplicator
Sort lines and remove duplicates online for email lists, keywords, IDs, logs, configs, and general text cleanup workflows.
JSON Diff & Merge
Compare two JSON values and generate a readable diff or merged JSON output online for API payloads, config files, fixtures, and debugging workflows.
JSON Schema Generator
Generate a JSON Schema from sample JSON online for validation, docs, API contracts, fixtures, and developer workflows.
BCrypt Hash Generator
Generate bcrypt hashes online for password testing, auth debugging, seed data, and developer workflows that need a cost-based password hash.
BCrypt Hash Verifier
Verify bcrypt hashes online for auth debugging, migration checks, login troubleshooting, and developer workflows that need bcrypt password validation.
Diff Checker
Compare two text blocks online to find added, removed, and changed lines for copy edits, configs, payloads, and developer debugging.
JWT Decoder
Decode JWT tokens online to inspect the header, payload, timing claims, and signature metadata in your browser.
URL Parser
Parse URLs online to inspect the protocol, host, path, query parameters, hash, and origin in your browser.
Query String Parser
Parse query strings online to inspect decoded parameters, repeated keys, campaign values, and URL parameter structure in your browser.
Query String Builder
Build query strings online from key-value pairs for redirects, tracking links, APIs, campaign URLs, and browser debugging.
JSON Minifier
Minify JSON online by removing extra whitespace while keeping valid JSON structure for APIs, payloads, embeds, and storage.
Regex Tester
Test regular expressions online with pattern, flags, test text, and readable match results.
Cron Expression Generator
Generate cron schedule expressions online with readable schedule options and plain-English output.
Popular Developer Tools
- XML Formatter
- JSON Formatter
- YAML Formatter
- HTML Formatter
- CSS Formatter
- JavaScript Formatter
- SQL Formatter & Beautifier
- XML Validator
- JSON Validator
- YAML Validator
- HTML Validator
- Markdown Editor & Preview
- Lorem Ipsum Generator
- UUID / ULID Generator
- Hash Generator
- HMAC Generator
- Slug Generator
- Word & Character Counter
- Case Converter
- Text Sorter & Deduplicator
- JSON Diff & Merge
- JSON Schema Generator
- BCrypt Hash Generator
- BCrypt Hash Verifier
- Diff Checker
- JWT Decoder
- URL Parser
- Query String Parser
- Query String Builder
- JSON Minifier
- Regex Tester
- Cron Expression Generator
Newer Developer Tools
Popular JSON and Data Tools
Popular Utility Tools
Guides For Developer Workflows
Why These Developer Tools Matter
Formatter, minifier, and validator pages help developers clean, compact, inspect, and debug structured text quickly.
JWT, URL, query-string, regex, and cron tools serve a different but related intent, so grouping them together creates a stronger developer-tool cluster for both users and search discovery.
This hub also gives the individual tools a clearer parent page, which improves internal linking and helps search engines understand the section of the site.