Free online string and text tools for encoding, decoding, hashing, formatting and converting text in your browser
Free online network diagnostics and developer tools for engineers and IT professionals
Stage
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Founded
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Based in
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BD
Pricing model
Free
Free
Pricing
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Web Utility Suite: Free forever with complete access to all web-based diagnostic tools via browser, unlimited queries, no registration required. Programmatic API: Coming Soon.
Key features
Base64 encoding and decoding
URL encoding and decoding
JSON formatting, validation and minifying
JWT decoding with readable timestamps
SHA-256 and other cryptographic hashing
UUID generation with multiple versions
Text diffing with multiple formats
Chainable pipelines with live preview
CSV to JSON and JSON to YAML conversion
Regular expression explanation in plain English
IP Lookup with geolocation, ISP, and ASN detection
DNS Lookup and query of multiple record types (A, AAAA, MX, CNAME, TXT, NS, SOA, CAA, PTR)
Subnet Calculator for IPv4 CIDR blocks and network calculations
Port Checker for TCP port connectivity testing
SSL Certificate Checker with expiration and TLS protocol verification
WHOIS Lookup for domain registration details
JSON Formatter and Validator with tree view and syntax error detection
Base64 Encoder and Decoder with file and image support
cURL to Code Converter supporting 7 programming languages
UUID v4 and UUID v7 generator with RFC 9562 compliance
What makes it different
All processing happens in your browser with no data uploaded to servers
Chain multiple tools into pipelines with live preview of each step
Available across VS Code, CLI, MCP and as a Node.js library
No cookies or tracking scripts, privacy-focused
248 utilities organized by category with guides and worked examples
100% free with no account, email, or payment required
Native Node.js execution for sub-second response times without queue delays
Privacy-focused with zero query logging and strict SSRF security filters
28 tools in one place covering both network diagnostics and developer utilities
All tools run in browser with no software installation or configuration required
String Utility Belt