Zero-persistence · runs 100% in your browser

Swift, minimalist developer utilities

20 precise tools for formatting, hashing, encryption and encoding — instant, client-side, no round-trips.

Formatter
JSON Formatter

Beautify, minify & validate JSON

SQL Formatter

Format and beautify SQL queries

Markdown Previewer

Edit and preview Markdown

Cryptography
SHA-256

Generate SHA-256 digest

SHA-1

Generate SHA-1 digest

MD5

Generate MD5 checksum

Bcrypt

Generate & verify bcrypt hashes

AES

Encrypt & decrypt with AES

Encoding
Base64

Encode & decode Base64

JWT Decoder

Decode & inspect JSON Web Tokens

URL Encoder

Encode & decode URLs

Generator
UUID Generator

Generate and inspect UUIDs

Slug Generator

SEO-friendly URL slugs

QR Code

Generate scannable QR codes

Color Palette

Design system color palettes & harmonies

Utility
Cron Parser

Human-readable crontab

Regex Tester

Test & debug regular expressions

Word Counter

Count words, chars & sentences

Timestamp Converter

Convert Unix timestamps to human-readable dates and back

Image
Image to Base64

Convert images to data URLs

Frequently Asked Questions

Is Syntaxly.dev safe to use for sensitive data?

Absolutely. Syntaxly is built on a 'Zero-Persistence' architecture. All processing (like AES encryption or JWT decoding) happens locally in your browser. Your data is never sent to our servers.

Why is Syntaxly faster than other online tools?

We use SvelteKit and a minimalist approach to eliminate bloat. Our tools are designed for 'Swift' performance, providing instant results as you type without server round-trips.

Does Syntaxly store my JSON or API tokens?

No. We do not use databases for your input data. Once you close the tab or refresh the page, your data is completely wiped from your browser's memory.

Syntaxly.dev

High-performance, minimalist developer utility suite. Optimized for speed and precision in modern professional workflows.

Encoding Tools

Security Suite

Support

© 2026. Syntaxly | Built for the minimalist developer.
Facebook