Create short, trackable URLs with detailed click analytics. Track visitor location, devices, referrers, and more. Password protection & QR codes included.
Anchor text generator that creates exact-match, partial-match, branded, generic, and naked URL variants for any URL and keyword. Free, no signup.
Barcode generator supporting Code128, EAN-13, UPC-A, Code39, and ITF formats. Download as PNG or SVG, free and browser-based.
Encode numbers or text to Base62 and decode strings back instantly in your browser. Ideal for URL shorteners and short IDs. Free, no signup, bulk conversion.
Calculate calories burned during any exercise using MET values from the Compendium of Physical Activities. Covers 30+ activities including walking, running, cycling, swimming, sports, and daily tasks.
Generate canonical link tags for preferred URLs and avoid duplicate content indexing issues across parameter and variant pages.
CORS tester checks whether a URL allows cross-origin requests from your browser, and explains exactly why a request was blocked when it fails. Free, no signup.
Generate cron expressions visually. Interactive UI for configuring minutes, hours, days, months, and weekdays for job scheduling.
Analyze a Content-Security-Policy header for unsafe directives like unsafe-inline, unsafe-eval, and wildcard sources. Get instant security warnings. Free, client-side, no signup.
Build Content-Security-Policy headers and meta tags with common directives, reporting options, and quick security warnings.
CSV viewer online: open a CSV from a URL, upload a file, or paste data, then search, sort, and filter it in a clean table. Shareable ?url= links, custom delimiters, large files.
Data URI parser that decodes any data: URL in your browser. See the MIME type, charset, base64 flag, decoded size and base64 overhead. Free.
Dockerfile linter checks your Dockerfile for best-practice violations and security issues with line-level findings, a score out of 10, and fix hints. Free, browser-based.
Scan a website for favicon, apple-touch-icon, and manifest icon coverage. Validate icon URLs, status codes, and recommended sizes.
Generate secure hashes with MD5, SHA-1, SHA-256, and SHA-512 algorithms. Essential for data integrity verification and security applications.
Create hreflang and x-default link tags for multilingual websites so search engines serve the correct language and region page.
Generate Strict-Transport-Security (HSTS) headers with includeSubDomains and preload directives. Enforce HTTPS for your domain easily.
htaccess redirect generator creates rewrite rules for 301 redirects, HTTPS enforcement, and WWW canonicalization. Copy ready-to-use Apache config instantly.
Htaccess to nginx converter turns Apache rewrite rules, redirects, headers and expires directives into working nginx config, flagging whatever needs a manual review.
Free URL status and HTTP response checker. See the status code, response headers, every 301/302 redirect hop and the response time for any link. No signup.
Generate Markdown-based llms.txt files with a site summary, guidance notes, and curated links for AI assistants and search agents.
Check Lua syntax instantly in your browser. Detect unbalanced blocks, unmatched brackets, and unterminated strings or comments with line numbers. Free heuristic Lua syntax validator, no signup required.
Convert Markdown to Slack mrkdwn formatting instantly. Handles bold, italic, code blocks, links, lists, and headings. Paste directly into Slack. Free, browser-based.
Convert Markdown content into clean plain text by removing headings, links, code blocks, and formatting while preserving readable output.
Markdown TOC generator builds a clickable table of contents from your headings with GitHub-compatible anchor links. Free, browser-based, no signup required.
Generate secure, URL-safe NanoIDs for databases, APIs, and public sharing links. Customize alphabet and size, then bulk-export IDs instantly in your browser.
Fetch and inspect the Open Graph and Twitter Card meta tags for any URL. Preview how your page looks when shared on Facebook, LinkedIn, Twitter, and Slack - with OG score and missing tag detection.
Open Graph tag generator builds OG meta tags for Facebook and LinkedIn with a live link preview. See exactly how your page looks when shared before publishing.
Generate a PayPal payment link or button in seconds: PayPal.me, Donate, Buy Now or Subscribe. Set the amount and currency, then copy the URL or HTML. Free.
Create custom QR codes for URLs, text, WiFi, and more. High-quality output with customizable colors and error correction levels.
Scan and decode QR codes from images or camera. Upload a QR code image or use your webcam to read QR codes instantly. Free online QR code scanner.
Test robots.txt rules to verify whether a specific URL path is allowed or blocked for Googlebot, Bingbot, or any custom user-agent.
Check which HTTP security headers are present on any website and get an instant A+ to F grade. Verifies Content-Security-Policy, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP, and CORP.
Generate a security.txt file for vulnerability disclosure following RFC 9116. Add contact, encryption, and policy fields, then download it for your .well-known folder.
Preview how your page title, URL, and meta description can appear on Google search results. Track title and description length instantly.
Sitemap diff checker compares two XML sitemaps and lists every URL added, removed or changed, with lastmod deltas. Paste or upload both. Free.
Generate comprehensive XML sitemaps for any website. Enter your URLs and create a Google-compatible sitemap.xml with priority, change frequency, and lastmod settings. Free, no signup.
Convert any text into a clean, SEO-friendly URL slug. Custom separators, lowercasing, and special character handling included.
Generate share links for all major social media platforms. Create ready-to-use URLs for Facebook, Twitter, LinkedIn, WhatsApp, and more.
Swagger viewer and OpenAPI explorer online. Load a spec from a URL or paste JSON/YAML, browse endpoints and schemas, and send live test calls. Free.
Convert plain text to HTML with automatic paragraph tags, line breaks, link detection, and special character encoding. Free online text to HTML tool.
Generate Twitter Web Intent URLs for pre-filled tweets, retweets, likes, follows, and direct messages. Perfect for share buttons and CTAs.
Free online tool to encode or decode URL components. Fast, private, and easy to use with no login required. All processing happens in your browser.
URL parser - extract protocol, host, path, query parameters, and hash fragments. Free, no signup, works instantly online.
Expand shortened URLs from bit.ly, t.co, tinyurl, and others to reveal the final destination and full redirect chain - free tool.
Generate clean, brandable username ideas for Instagram, TikTok, YouTube, Twitch, LinkedIn, and more with style and separator options.
Create UTM-tagged URLs for tracking marketing campaigns in Google Analytics. Build links with source, medium, campaign, term, and content parameters.
Create click-to-chat WhatsApp links. Generate wa.me links, API links, and group invite links for websites and marketing campaigns.
Make a free Will You Be My Valentine website: a Yes or No page where the No button runs away. Pick a theme and song, share the link, and see their answer.
Download any YouTube thumbnail in HD up to 1280x720, Shorts included. Paste a watch link, youtu.be link or video ID. Free, no signup, no watermark.
Generate YouTube timestamp links that start at any time. Create shareable URLs and embed codes for videos instantly - free, no login required.