Free developer tools
Handy utilities for everyday development — generators, encoders, formatters and testers. Everything runs in your browser: fast, private, and free forever.
Generators
Encoding & Hashing
Base64 Encoder / Decoder
Encode text to Base64 or decode it back — UTF-8 safe, with URL-safe variant support.
URL Encoder / Decoder
Percent-encode strings for safe use in URLs, or decode %20-style sequences back to text.
JWT Decoder
Decode a JSON Web Token's header and payload, check expiry, and verify HS256 signatures.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes of any text — instantly, in your browser.
Formatting
Data & Text
Lorem Ipsum & Fake Data
Placeholder paragraphs plus fake names, emails, phone numbers and addresses for testing UIs.
JSON ↔ CSV Converter
Convert JSON to spreadsheet-ready CSV or CSV back to JSON — nested objects flattened, both directions.
Regex Tester
Test regular expressions against your text with live match highlighting and capture groups.
Diff Checker
Compare two blocks of text or code line by line and see exactly what was added or removed.
Time & Scheduling
Unix Timestamp Converter
Convert Unix / epoch timestamps to human-readable dates and back — UTC, local and relative time.
Time Zone Converter
Convert a time between any two time zones with automatic daylight-saving handling.
Cron Expression Generator
Build and understand cron schedules with a live plain-English description and next run times.
Network
Free tools are just the start
Deploy your next app on bare-metal cloud with per-second billing — your first app is free, no credit card required.