Your Code & Data,
Formatted, Decoded & Private.

JSON Formatter & Beautifier

Format, beautify, and validate JSON data with custom indentation.

JSON Validator

Validate JSON syntax compliance with line & column error markers.

JSON Minifier

Compress and minify JSON data by stripping non-significant whitespace.

JSON ↔ YAML Converter

Convert bidirectional data seamlessly between JSON and YAML.

JSON ↔ CSV Converter

Convert between JSON arrays of objects and CSV spreadsheets bidirectionally.

JSON ↔ XML Converter

Convert between JSON and XML with an explicit mapping (@_ attributes, #text). Not a universal standard; DTD/XXE disabled.

TOML ↔ JSON Converter

Convert accurately between TOML and JSON.

XML Formatter & Beautifier

Format and indent XML documents while preserving comments and CDATA.

SQL Formatter

Beautify SQL queries across Standard SQL, PostgreSQL, MySQL, and SQLite dialects.

HTML Beautifier

Parse and format HTML documents locally with Prettier, including embedded content.

CSS Beautifier

Parse and format CSS or SCSS locally with Prettier's PostCSS parsers.

JavaScript / TS Formatter

Parse and format JavaScript and TypeScript locally with Prettier.

Code Diff Viewer

Compare two code snippets side-by-side or unified with word diff highlighting.

Base64 Encoder / Decoder

Encode UTF-8 strings or files to Base64 and decode Base64 data back.

JWT Inspector, Signer & Verifier

Decode, inspect, verify, and sign JSON Web Tokens (HS256/384/512, RS256, ES256) on this device.

URL Encoder / Decoder

Encode special characters into URL-safe percent encoding (%20) and back.

HTML Entity Encoder / Decoder

Convert special characters into HTML named (&) and numeric entities.

Password Generator

Generate cryptographically secure random passwords and memorable local passphrases.

Password Strength Checker

Offline dictionary and pattern-aware strength estimate — no breach lookup or network request.

Password Hasher & Verifier

Generate and verify bcrypt password hashes on this device.

Crypto Suite (AES & RSA)

Symmetric AES-GCM/CBC encryption & asymmetric RSA-OAEP keypair generation & encryption.

SHA-256 / SHA-512 Hash

Calculate SHA-256, SHA-384, or SHA-512 hashes and HMACs locally in a browser Worker.

File Checksum (SHA)

Compute SHA-256, SHA-384, or SHA-512 checksums for file bytes or pasted text.

UUID Generator (v1, v4, v5 & v7)

Generate bulk v1, v4, namespace-based v5, and time-ordered v7 UUIDs in canonical, raw, braced, or URN form.

Nano ID Generator

Generate URL-safe Nano IDs with cryptographically secure randomness.

Cron Parser & Builder

Parse 5-field Unix cron to a human description and next run times (IANA timezone). Builder produces Unix-style cron only — not Quartz/AWS variants.

QR Code Generator

Encode text or URLs into validated static QR SVG and PNG artifacts (error correction L/M/Q/H).

Barcode Generator (1D & 2D)

Render validated Code 128, Code 39, EAN-13, UPC-A, ITF-14, DataMatrix, PDF417, and Aztec SVG or PNG barcodes.

UUID Validator & Inspector

Inspect embedded version, variant, and creation timestamp of any UUID.

Unix Timestamp Converter

Convert signed Unix seconds or milliseconds and date strings to human-readable formats with explicit unit control.