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WHOIS Lookup Registrar, expiry, status, and name servers via RDAP/WHOIS DNS Lookup Records table, DNSSEC, CAA, and resolver propagation Email AuthenticationUpdated SPF, DMARC, DKIM, MX with deliverability verdict Mail Server HealthNew Network utility IP Lookup Geo, reverse DNS, ASN, network block, and RDAP IP Blacklist CheckUpdated Spam and abuse blocklist reputation scan Bulk IP Geolocation Geo and ASN for many IPs in one paste Bulk Blacklist CheckUpdated Blocklist status for IP lists and proxy exits WebRTC Leak Test ICE leak test beyond VPN or proxy Proxy CheckerUpdated Bulk HTTP/SOCKS check with exit IP and export Proxy Anonymity Elite vs anonymous vs transparent headers SSL Test Expiry, chain trust, SANs, and CT hostnames HTTP Headers Redirects, security grade, robots.txt Lookalike Domains Unicode homoglyph and punycode variants Browser Fingerprint Canvas, WebGL, audio, device signals

Cron Expression Generator Build and explain common cron schedules. IPv4 Subnet Calculator Network address, broadcast, host range, and masks from CIDR. Unix Timestamp Converter Convert Unix epoch seconds or milliseconds to ISO dates and back — with one-click Now for log and API debugging. CIDR Overlap & Contains Checker Check if two IPv4 CIDR subnets overlap and whether a host IP falls inside either network block. SemVer Calculator Compare, bump, and validate semantic version strings. SLA & Uptime Calculator Convert SLA uptime percentages to allowed downtime per day, week, month, and year — or reverse from outage minutes. .env File Parser Parse .env and dotenv files into a key/value table with duplicate and syntax warnings. Proxy List Format ConverterUpdated Convert proxy lists between common formats — up to 5,000 lines. Nginx ↔ .htaccess Converter Convert rewrite rules and common directives between nginx and Apache .htaccess — both ways. Self-Signed Certificate Generator Generate a self-signed TLS certificate and RSA private key with optional SAN DNS names for local development. OpenSSH Public Key Inspector Parse OpenSSH public keys and authorized_keys files — type, options, SHA256 and MD5 fingerprints. Regex Tester & Replacer Test regular expressions with live matches, capture groups, highlighted hits, and replace preview. Locale Atlas Locale formatting and regional data

Base64 Encode / Decode Encode or decode Base64 strings safely in the browser. URL Encode / Decode Percent-encode or decode URL query strings and path segments with component or full-URI modes. Hex Encode / Decode Convert UTF-8 text to hexadecimal byte dumps and decode hex back to readable text. HTML Entities Encode / Decode Escape or unescape HTML special characters with named and numeric entity encoding. Unicode Escape Encode / Decode Convert text to \uXXXX JavaScript-style escapes and decode escape sequences back to Unicode. Punycode / IDNA Converter Convert internationalized domain names to ASCII Punycode (xn--…) and decode xn-- labels back to Unicode. Charset & Code Point Viewer Inspect UTF-8 bytes, code points, and UTF-16 units per character. Quoted-Printable Encode / Decode Encode and decode MIME quoted-printable for email bodies and HTTP headers with optional soft wrap. JWT Decoder Decode JWT header and payload online — inspect algorithm, claims, and expiry without verifying the signature. HMAC Generator Compute HMAC-SHA-256, SHA-384, and SHA-512 message authentication codes from a message and secret key. Hash Generator (SHA-256 / SHA-1 / MD5) Generate SHA-256, SHA-1, and MD5 hashes from text with live update as you type.

UTM Link Builder Build campaign tracking URLs with utm_source, utm_medium, utm_campaign, and optional term and content parameters. Meta Title & Description Length Checker Check approximate SERP pixel/character lengths for titles and descriptions. Open Graph & Twitter Card Meta Generator Generate Open Graph and Twitter Card meta tags for Facebook, LinkedIn, and X link preview cards. Canonical Link Tag Generator Generate a rel=canonical link tag for duplicate-content control. Hreflang Alternate Tags Generator Build hreflang link tags for multilingual and regional pages. Meta Robots Tag Generator Compose a meta name=robots tag with noindex, nofollow, nosnippet, and Google-specific directives. JSON-LD Structured Data Generator Build Schema.org JSON-LD for WebPage, Article, SoftwareApplication, or Organization. FAQPage JSON-LD Generator Build FAQPage Schema.org JSON-LD from question and answer pairs for rich-result eligibility. BreadcrumbList JSON-LD Generator Generate BreadcrumbList Schema.org JSON-LD with ordered name and URL crumbs for SERP breadcrumbs. XML Sitemap Generator Turn a URL list into a valid sitemap.xml file. Keyword Density Analyzer Analyze word and 2–3 word phrase frequency in page copy with density percentages and stop-word filtering. robots.txt Generator Generate a robots.txt file with user-agent rules, allow/disallow paths, and a sitemap directive. WCAG Contrast Checker Check WCAG 2.x contrast ratio between foreground and background colors with AA and AAA pass indicators.

JSON ↔ YAML Converter Convert JSON to YAML and YAML to JSON with live preview and one-click copy for Kubernetes, CI, and API configs. CSV ↔ JSON Converter Convert CSV spreadsheets to JSON arrays and JSON arrays back to CSV with comma, semicolon, or tab delimiters. Markdown ↔ HTML Converter Convert Markdown to HTML with live preview, or turn simple HTML snippets back into Markdown for docs and CMS paste. JSON ↔ XML Converter Convert JSON objects to indented XML and XML documents to JSON for APIs, SOAP payloads, and legacy configs. TOML ↔ JSON Converter Convert TOML config files to JSON and JSON back to TOML for Cargo, pyproject, and DevOps tooling. JSON Formatter & Validator Pretty-print, minify, or validate JSON with live feedback. Java Properties ↔ JSON Convert Java .properties files to JSON and JSON back to .properties for Spring and JVM configs. Bits, Bytes & Bandwidth Converter Convert bytes, megabytes, megabits, Mbps, MB/s, and GiB with SI and IEC units plus transfer-time estimates. Slugify Text Turn any title or heading into a lowercase, hyphenated, URL-safe slug for permalinks and file names.

UUID Generator Generate one or many UUID v4 values — copy or download. Password Generator Generate strong random passwords with charset toggles, ambiguous-character exclusion, and strength estimate. Random Number Generator Generate random integers or decimals in a range — bulk output with optional unique values and sort. Random Name Generator Generate fake first and last names by country locale for QA tests, demos, and database seeds. Random Email Generator Generate random test email addresses with common local-part patterns and optional custom domain. Fake Data Generator Generate full fake user profiles by country — name, email, phone, address, username, and company. Lorem Ipsum Generator Generate lorem ipsum placeholder text as paragraphs, sentences, words, or bullet list items.