Developer Tools That Just Work
Format JSON, run SQL queries, write Java, format Python — all free, all instant, all in your browser.
String Escape & Unescape
Escape or unescape strings for JSON, Java, JavaScript, URL, HTML, XML, Unicode \u and Base64 — live, in your browser.
Python Compiler
Write and run Python code online — see stdout, stderr, and errors instantly on the server.
String Utils
Case converter, find & replace, trim, sort lines, deduplicate, slugify, padding and character stats — all client-side.
UUID Generator
Generate v1/v3/v4/v5/v6/v7 UUIDs, bulk export, validate, decode timestamps, namespace hashing — client-side.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text
JSON Path Finder
Click any node to get its JSONPath expression
Python Formatter
Full-page Python formatter with PEP 8 style, syntax validator, import sorting, diff view, and download — in your browser.
HTML Playground
Write HTML, CSS and JS — see live preview instantly
Base64 Encode / Decode
Encode and decode Base64 strings and files instantly
Regex Library
Browse common regex patterns by category — email, URL, UUID, passwords, and more.
Diff Checker
Compare two blocks of text or code side-by-side. See additions, removals, and changes highlighted instantly — free, private, in your browser.
Css Loaders
Interactive 40+ Css loaders and framework code generators
Code Minifier tool
Code Minifier tool - HTML, CSS, JS, TS, Python, Java, Ruby, PHP, and Rust with rich extra features
Velocity Code Formatter
Format Apache Velocity / VTL templates with directive indentation, spacing cleanup, diagnostics, copy, and download.
Barcode Calculator
Bulk calculate and validate GTIN-8/12/13/14 check digits — GS1 mod-10, up to 1M rows.
Barcode Repair Tool
Recover smudged GTINs using ? or * wildcards — brute-force valid check digits.
Barcode Identifier
Identify GTIN, ISBN, GS1-128, Digital Link, VIN, IMEI, ASIN from any pasted code.
GS1 Digital Link Generator
Convert GTINs to GS1 Digital Link URLs with batch, expiry, and serial qualifiers — bulk mode.
GS1-128 Parser
Decode GS1-128 paren or FNC1 barcodes with per-AI breakdown — single and bulk.
ISBN Converter
Convert ISBN-10 ↔ ISBN-13 with check digit validation and hyphenation.
JSON to Zod
Generate Zod validation schemas from JSON.
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