Toolchain

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Browser-local utilities

Small browser utilities for everyday engineering work.

Runs in your tab—no accounts, no uploads.

Explore toolsTry Base64
  • Runs offline in your tab
  • No accounts or API keys
  • Keyboard search with ⌘K
  • Dark mode friendly

Browse by category

Pick a workflow—hashing, encoding, tokens, text, and more. Each page stays focused on one task.

Hash & cryptography

Checksums and hashes for integrity checks, debugging, and security workflows.

SHA-256 hash
Hash text with the Web Crypto API (SHA-256).
Open

Encoding & decoding

Move data between Base64 and plain text for APIs and debugging.

Base64
Encode or decode Base64 strings and compare results side by side.
Open

Developer tools

Parse tokens, generate IDs, convert time, test patterns, and format JSON.

JWT decoder
Inspect header and payload—verification is not performed.
Open
UUID generator
Generate RFC 4122 version 4 UUIDs with one click.
Open
Unix timestamp
Epoch ↔ ISO, quick offsets from now, and timezone-aware display.
Open
Regex tester
Try a JavaScript regex against sample text with match highlights.
Open
JSON formatter
Prettify or minify JSON with clear error messages.
Open
URL encoder
Encode or decode URL components with encodeURIComponent.
Open
Cron helper
Split a cron expression and see what each field means.
Open

Text

Count, transform, and generate placeholder content.

Text case
Convert between UPPER, lower, Title, camelCase, and snake_case.
Open
Text counter
Words, characters, lines, and approximate reading time.
Open
Lorem ipsum
Generate placeholder paragraphs for layouts and mocks.
Open

Security

Generate strong passwords using crypto-grade randomness.

Password generator
Length, character sets, and copy to clipboard.
Open

Data & QR

Convert numeric bases and create QR codes for URLs and text.

Number base converter
Convert integers between binary, octal, decimal, and hexadecimal.
Open
QR code generator
Render a scannable QR code from any string.
Open