Static-first tools
Privacy-first online tools that work fast
A static-first collection of browser-side tools for cryptography and developer workflows, built with clear privacy notes and fast static pages.
No signup, no server-side processing for browser tools, and clear limits documented per page.
Converters
This section will collect practical converters for files, text, encodings, colors, and developer workflows. The first production-ready conversion utility is currently Base64 encode and decode in the crypto section.
Developer Utilities
Use small, reliable utilities for everyday developer tasks: UUID/GUID generation, JSON formatting, URL encoding, HTML escaping, timestamps, references, and color tools.
UUID / GUID Generator
Generate RFC 4122 version 4 UUIDs in your browser with copy-ready output and clear usage notes.
JSON Formatter And Validator
Format, validate, and minify JSON in your browser with clear error messages and copy-ready output.
URL Encoder And Decoder
Encode and decode URL components in your browser, with clear notes about percent encoding and privacy risks in URLs.
HTML Escape And Unescape
Escape and unescape HTML entities in your browser for safer display of text in markup contexts.
Unix Timestamp Converter
Convert Unix timestamps to readable UTC/local dates and convert dates back to timestamps in your browser.
JSON Schema Validator
Validate JSON data against a JSON Schema-like object in your browser with clear limitations.
JWT Decoder
Decode JWT header and payload locally in your browser with explicit warnings about token secrecy and signature verification.
Regex Tester
Test JavaScript regular expressions in your browser with match output and ReDoS warnings.
Launch Vertical: Crypto
Use focused crypto utilities for hashing, encoding, random generation, and learning when each primitive is appropriate. The first tools in this section are designed to run locally in the browser whenever possible.
SHA-256 Hash Generator
Generate a SHA-256 hash in your browser. Input stays on your device and is processed with the Web Crypto API.
MD5 Hash Generator With Security Warning
Generate MD5 hashes for legacy checksums and learn why MD5 should not be used for security-sensitive work.
Base64 Encode and Decode
Encode and decode Base64 text in your browser, with clear notes about what Base64 is and is not.
Secure Random Password Generator
Generate strong random passwords in your browser using cryptographically secure random values.
Secure Random Hex Generator
Generate cryptographically secure random hexadecimal strings in your browser for tokens, test data, and identifiers.
File Hash Generator
Generate SHA-256 hashes for local files in your browser without uploading file contents.
What Makes This Different
This version is not a copy of the old WordPress site. It starts with fewer pages and a higher quality bar: clear intent, honest limitations, static HTML, browser-side tools, and deployable redirect rules for legacy URLs.
- Tools work without registration.
- Browser-only tools state their privacy model directly.
- Legacy URLs are treated as redirect compatibility data, not as content to clone.