Lintly.cloud

Developer tools that
never touch your data.

17 free tools for formatting, encoding, parsing, and converting. Everything runs in your browser — nothing is sent to a server.

Client-side only Instant Monaco Editor No account

Data Formats

JSON Formatter & Validator

Format, validate, and beautify JSON data with real-time error detection and auto-fix.

XML Formatter & Validator

Format, beautify, and validate XML documents with syntax highlighting.

YAML Formatter & Validator

Format, validate, and beautify YAML documents with error detection.

CSV Viewer & Editor

View, sort, filter, and edit CSV data in a spreadsheet-like table.

SQL Formatter & Beautifier

Format and beautify SQL queries with syntax highlighting and dialect support.

Markdown Preview

Write Markdown and see a live preview with GitHub-flavored styling.

Converters

JSON to YAML Converter

Convert JSON data to YAML format and vice versa.

JSON to XML Converter

Convert between JSON and XML formats bidirectionally.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates across timezones.

Case Converter

Convert text between camelCase, snake_case, kebab-case, PascalCase, and more.

Encoders & Decoders

Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings instantly.

URL Encoder & Decoder

Encode or decode URL components and full URLs.

JWT Decoder & Inspector

Decode and inspect JSON Web Tokens — view header, payload, and expiration.

Generators

UUID / ULID Generator

Generate UUIDs (v1, v4, v7) and ULIDs in bulk.

Hash Generator (MD5, SHA)

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes using Web Crypto API.

Testers & Validators

RegEx Tester & Debugger

Test regular expressions with live highlighting, capture groups, and a cheatsheet.

Text Utilities

Word & Character Counter

Count words, characters, sentences, paragraphs, and reading time.

Free Online Developer Tools — Format, Parse, Encode, Convert

Lintly.cloud is a suite of free online developer tools. Format JSON, parse XML, format YAML, encode Base64, decode JWT tokens, generate UUIDs, format SQL, and test regex — all in your browser with zero setup.

Every tool processes data 100% client-side. Your API keys, tokens, and configs never leave your browser. No uploads, no tracking, no accounts.

Built with Monaco Editor (VS Code's engine) for syntax highlighting, bracket matching, and code folding. Press ⌘K to instantly jump to any tool.