← Tools
Web & Developer
Build, inspect, encode and troubleshoot websites and code.
Creator Publishing & Feeds
- Podcast RSS ValidatorPaste podcast RSS XML and get a fix list for XML, channel, episode, audio enclosure, and date problems.
- RSS Feed ValidatorPaste RSS 2.0 or Atom 1.0 XML to see the format, parsed entry fields, missing requirements, and link references that need fixing.
- VCard GeneratorCreate a vCard 3.0 or 4.0 contact file from a name, phone, email and address, then download the checked .vcf file.
- Email Signature GeneratorBuild a responsive email signature from your name, role, contact details and links, then copy the HTML.
- Calendar Event Link GeneratorFill in one event and get ready-to-open Google and Outlook links plus a downloadable ICS file.
- Social Bio Character CounterCheck a profile bio against current limits for Instagram, TikTok, X, Threads and Bluesky.
SEO & Site Metadata
- Robots.txt Generator & ValidatorBuild crawl rules and check which path Googlebot can access.
- XML Sitemap GeneratorTurn page URLs and crawl metadata into a ready-to-use sitemap.xml.
- Hreflang GeneratorAdd each localized URL and get a complete hreflang set with x-default.
- Canonical Tag CheckerEnter a page URL to find its canonical and compare it with the page address.
- Redirect Rule GeneratorTurn source and destination CSV mappings into 301 or 302 rules for Nginx, Apache and Vercel.
- Schema Markup GeneratorFill in FAQ, product or how-to details and copy ready-to-paste JSON-LD.
- URL Slug GeneratorTurn page titles into clean, hyphenated URL slugs.
Dev Formats & Code Generation
- SQL FormatterBeautify SQL and read it back clause by clause in plain English.
- HTML Beautifier & MinifierReindent tangled HTML to read it, or minify it to ship it — with an optional check for broken tags.
- CSS Beautifier & MinifierReindent messy CSS to read it, or minify it to ship it — with a safe mode that never reorders your rules.
- JavaScript Beautifier & MinifierReindent minified or obfuscated JavaScript so you can read it, or minify your own code to ship it smaller.
- SVG OptimizerClean up SVG code and shrink it without changing the graphic.
File & Executable Format Inspection
Browser & Device Testing
Dev Rule Testing
- Regex TesterTest JavaScript regular expressions against sample text, right in your browser.
- XPath TesterTest XPath expressions against XML or HTML and inspect every matching node, value and path.
- JSONPath TesterTest JSONPath expressions against JSON and see matching values and paths as you type.
- Cron Expression ParserParse a cron schedule into a plain field breakdown and preview its next run times, right in your browser.
Encoding, Hashing & Security Formats
- JWT DecoderDecode JWT headers and payloads instantly, right in your browser.
- Base64 Encoder/DecoderEncode and decode Base64 text instantly, right in your browser.
- Base64 Image ConverterDrag in an image to get its Base64 data URI, or paste Base64 to preview and download the image.Specialized pages (2)
- Binary/Hex ConverterConvert numbers between binary, hex, decimal, and octal — or turn text into bytes.
- URL Encoder/Decoder + HTML EntitiesEncode URLs, decode percent escapes, and escape HTML entities.
- Hash GeneratorGenerate SHA-1, SHA-256, SHA-384 and SHA-512 hashes instantly, right in your browser.
- File Hash & Checksum CalculatorGet MD5, SHA-1, SHA-256, and SHA-512 for any file, and verify a checksum.
- UUID / ULID / NanoID GeneratorGenerate UUID v4, UUID v7, ULID, and NanoID values instantly, right in your browser.Specialized pages (5)
- QR Code GeneratorCreate static QR codes for links, WiFi, contacts, email, SMS and text.
- QR Code ReaderScan or upload a photo to decode any QR code, right in your browser.
- Barcode GeneratorMake scannable Code 128, EAN, UPC and more barcodes to download as PNG or SVG.
- Password / Passphrase GeneratorGenerate strong random passwords or memorable passphrases, right in your browser.
Privacy & Compliance Templates
Network, Domains & Protocols
- Robots Crawl Budget EstimatorCompare crawl demand with a server-safe daily capacity estimate.
- HTTP Redirect Trace ToolTurn pasted redirect headers or URL chains into a hop-by-hop trace with loop, downgrade and target warnings.
- IPv4 Subnet CalculatorEnter an IP and CIDR or subnet mask to get the network, usable range, broadcast address and host counts.
- WebSocket Test ClientConnect to a WebSocket, send messages, and view sent and received messages, connection status, the WebSocket close code, and the close reason provided by the server.
- Webhook Request InspectorPaste a webhook method, headers and body to inspect the request and build a copyable test command.
- Punycode ConverterConvert Unicode domains to Punycode and decode xn-- labels back.
- CORS CheckerCheck whether a pasted response allows a specific browser origin, method and request headers.
- DNS Propagation CheckerPaste DNS answers from multiple resolvers and compare record types, TTLs and values side by side.
- What Is My IPSee the public IP address this connection is using, with the network, region and edge details visible from it.
- SPF Record CheckerPaste an SPF TXT record to break down its terms, estimate DNS lookups and spot syntax or policy risks.
- DKIM Record CheckerPaste a DKIM TXT record to inspect its version, key type, public key, services and quoted DNS chunks.
- DMARC Record CheckerParse a DMARC TXT record to review policies, alignment, report addresses, percentages and invalid tags.
- Email Deliverability ChecklistReview your sending domain, authentication and sending practices, then get missing items and verification steps.
- TLS Cipher Suite CheckerPaste a TLS scan or handshake summary to explain the negotiated protocol, cipher suite and legacy algorithms.
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