The complete browser toolbox
Browse focused, browser-first utilities with practical instructions, examples and clear limitations.
Password Strength
See what makes a password resilient.
Passphrase Generator
Generate seven random words from a curated 7,776-word list.
Secure Random
Generate random strings with Web Crypto.
Password Entropy
Understand search space in seconds.
Email Privacy Masker
Share contact details without oversharing.
Text Redactor
Find and mask sensitive patterns locally.
Base64 Encoder
Encode and decode UTF-8 text.
URL Encoder
Safely prepare query parameters.
JWT Decoder
Inspect headers and payloads — locally.
Hash Generator
Create SHA-256, SHA-384 or SHA-512 hashes.
HMAC Generator
Sign messages in your browser.
HTML Entity Tool
Encode special characters safely.
Unicode Inspector
Explore code points and bytes.
JSON Formatter
Validate, format or minify JSON.
CSV to JSON
Turn tabular text into structured data.
URL Parser
Break any URL into useful parts.
File Hash Checker
Verify a file without uploading it.
Image Metadata Cleaner
Export a cleaner, share-ready image.
File Size Converter
Compare decimal and binary units.
Timestamp Converter
Move between Unix time and dates.
UUID Generator
Generate collision-resistant IDs.
TOTP Generator
Create time-based one-time codes locally.
Color Contrast
Check WCAG contrast with live preview.
CSS Gradient
Design a gradient and copy the CSS.
Color Palette Generator
Create a balanced five-color palette locally.
Regex Tester
Test patterns with clear match highlights.
Text Diff Checker
Compare two versions line by line.
Text Encryptor
Encrypt and decrypt short messages locally with AES-GCM.
File Encryptor
Protect local files with password-derived AES-GCM encryption.
QR Code Generator
Create a downloadable QR code from text or a URL.
QR Image Reader
Read a QR code from an image on your device.
IP Subnet Calculator
Calculate IPv4 and IPv6 network ranges from CIDR.
Security Headers Checker
Review pasted HTTP response headers against common protections.
CSP Builder
Build a Content Security Policy and flag risky directives.
JSON Schema Validator
Validate a JSON document against a local JSON Schema.
YAML JSON Converter
Convert YAML and JSON locally with a safe data schema.
SQL Formatter
Format SQL with selectable dialects and indentation.
Markdown Preview
Render a safe Markdown preview without raw HTML.
File Signature Checker
Compare a file extension with its detected byte signature.
Text Cleanup
Normalize, sort, deduplicate and change text case.