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Focused developer reference
BeautiCode presents a focused set of 23 browser-based tools and 16 source-backed guides. Each visible page is connected to practical examples, standards context, and clear privacy notes.
Format, validate, compare, and export API payloads without uploading them.
Hash, HMAC, bcrypt, JWT, and password workflows with source-backed guides.
Base64 and URL encoding for APIs, tokens, redirects, and data URIs.
Checksum addresses and convert Wei, Gwei, Ether, BTC, and Satoshi units.
A curated set of practical tools for data formats, security, encoding, images, QR codes, and Ethereum workflows.
Format, minify, and validate your JSON data for better readability.
Validate JSON data against JSON Schema Draft-07 with detailed error reporting.
Compare and find differences between two JSON files with visual highlighting.
Convert JSON data to CSV format for spreadsheet applications and data analysis.
Convert CSV data to JSON format for web applications and data processing.
Beautify and normalize YAML with 2 or 4 space indentation, optional alphabetical key sorting, and minify mode.
Encode text to Base64 or decode Base64 strings in one unified tool.
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes from text with real-time computation.
Generate HMAC signatures using SHA-256, SHA-384, SHA-512 with a secret key.
Generate and verify bcrypt password hashes with configurable rounds.
Decode JSON Web Tokens to inspect header, payload, signature, and expiration time.
Create strong, secure passwords with customizable options and strength indicators.
Compress images online without losing quality. Supports JPEG, PNG, WebP with adjustable quality.
Optimize SVG code by removing metadata, comments, and empty groups. Compare size reduction.
Convert Ethereum addresses to EIP-55 checksum format and validate address integrity.
Convert between Wei, Gwei, and Ether with precision. Decimal math without floating-point errors.
Convert between ETH, Wei, Gwei, BTC, and Satoshi units with precise calculations.
Generate QR codes for URLs, WiFi, VCard, Email, Phone and more with logo and color customization.
Each highlighted guide includes practical examples and official source links.
QR codes are a grid of black and white modules with built-in error correction. Types, sizing trade-offs, design rules that survive scanners, and what payment and Wi-Fi codes look like underneath.
Everything you need to start shipping on Ethereum: EIP-55 address checksums, wei-to-ether math, gas mechanics, wallet derivation, and the Hardhat vs Foundry split.
TypeScript types vanish at runtime, so your API still trusts whatever shows up in req.body. JSON Schema 2020-12, Ajv, and how to ship contracts that hold under real traffic.
What entropy, length, uniqueness, and randomness actually buy you, plus the password manager habits that prevent one breach from becoming many.
Stripe webhooks use HMAC, OIDC ID tokens use RSA, JWTs ship in both flavours. The choice is rarely about cryptography — it is about who needs to hold the key and when.
Every photo from a modern phone or camera carries GPS coordinates, a device fingerprint, and a timestamp. Most of the time nobody cares. The cases when it matters are the ones worth knowing about.
BeautiCode keeps the visible catalog focused on the workflows developers use most: formatting API payloads, checking data contracts, generating hashes and HMACs, decoding tokens, preparing QR codes, optimizing images, and validating Ethereum units and addresses.
The same reviewed set appears in navigation, feeds, related links, and the sitemap: core pages, 23 representative tools, and 16 source-backed guides. That keeps the site easy to scan and keeps every visible tool connected to useful documentation.