All Developer Tools
12 tools are available now and more are planned. Search by name, or filter by category and availability. Planned tools are labelled Coming soon and open a short placeholder page.
38 tools found
Log Sanitizer
Mask secrets, tokens, and PII in logs before you share them.
JWT Decoder & Inspector
Decode a JWT, inspect its claims and expiry, and review potential security issues locally.
Image Metadata & AI Provenance Cleaner
Inspect image metadata, check supported AI provenance information, and remove hidden metadata locally.
HTTP Security Headers Analyzer
Analyze HTTP response headers for security configuration issues.
CSP Analyzer
Analyze Content Security Policy headers, detect configuration issues, explain directives and sources, and generate safer CSP recommendations.
Email Header Analyzer
Analyze email headers to understand authentication, delivery paths, mail servers, timestamps, and potential security issues.
JSON Formatter
Format, validate, beautify, minify, and explore JSON instantly.
.htaccess Analyzer
Analyze Apache .htaccess configuration, rewrite rules, redirects, security settings and common server issues.
Cron Builder
Build, validate and explain cron expressions, preview run times by timezone, and check dialect compatibility.
CIDR Calculator
Calculate subnet info from an IPv4 CIDR block.
Redirect Chain Analyzer
Analyze URL redirects, detect redirect chains and loops, and inspect HTTP status behavior.
Open Graph & Social Preview Analyzer
Check Open Graph tags, Twitter/X Cards, social images and link previews for any public webpage.
Secret Scanner
Scan pasted text or files for leaked credentials and keys.
JWT Generator
Build and sign a JWT for testing.
Password Generator
Generate strong, random passwords with custom rules.
Hash Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes.
SSL Certificate Viewer
Decode a PEM certificate's subject, issuer, and validity.
JSON Diff
Compare two JSON documents and highlight differences.
YAML to JSON
Convert YAML to JSON and back.
XML Formatter
Format and validate XML documents.
Base64 Encoder
Encode and decode Base64 text or files.
URL Encoder
Percent-encode and decode URLs or query strings.
HTML Encoder
Escape and unescape HTML entities.
Regex Tester
Test regular expressions against sample text live.
Docker Compose Validator
Validate a docker-compose.yml against the schema.
Kubernetes YAML Validator
Validate Kubernetes manifests before you apply them.
Nginx Config Validator
Check nginx.conf syntax before deploying it.
DNS Lookup
Query A, AAAA, MX, TXT, and other DNS records.
IP Calculator
General-purpose IPv4 address and subnet calculator.
WHOIS Lookup
Look up domain registration details.
Subnet Mask Calculator
Convert between prefix length, subnet mask, and wildcard mask.
Port Checker
Look up what a well-known port number is used for.
User Agent Parser
Break a User-Agent string into browser, OS, and device.
UUID Generator
Generate v4 (random) or v7 (time-ordered) UUIDs in bulk.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Lorem Ipsum Generator
Generate placeholder text by word, sentence, or paragraph.
Slug Generator
Turn any string into a clean URL slug.
Temporary Email
Create a free temporary email address with no signup. Receive verification emails in a short-lived inbox that deletes itself.
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