Webmaster Tools

Generate .env files for Next.js, Django, Express, Rails, Stripe, Supabase, OpenAI and more. Auto-fill cryptographically strong secrets, redact sensitive values for .env.example, and export to docker-compose, bash, JSON or YAML.

Scan any webpage to find broken links, 404 errors, and redirect issues. Check up to 200 links across 20 pages with live progress and incremental results.

Calculate Cost Per Click (CPC), CPM (cost per 1,000 impressions), and CTR (click-through rate) with visual funnel diagram, campaign benchmarks, and step-by-step formulas.

Calculate CPM (Cost Per Thousand Impressions), campaign cost, and ad impressions with visual breakdowns, industry benchmarks, and step-by-step formulas for digital advertising optimization.

Create cron job expressions with an intuitive visual builder, real-time syntax validation, human-readable descriptions, and next execution preview. Perfect for scheduling Linux/Unix tasks.

Create cron job expressions with an intuitive visual editor. Build complex scheduling rules for Linux crontab without memorizing syntax. Features live preview, human-readable explanations, and common schedule presets.

Compress and minify CSS code online for free. Reduce CSS file size by removing whitespace, comments, and unnecessary characters. See detailed compression statistics and comparison.

An interactive CSS Flexbox playground with live preview, per-item controls, real-world presets (Holy Grail, Card Grid, Navbar, Modal) and one-click CSS export. Learn flex-direction, justify-content, align-items and gap by experimenting.

A visual CSS Grid builder with click-to-place items, track sizing in fr, px, minmax and auto, a per-item row and column span editor, an animated grid line overlay, six real-world presets and one-click CSS export.

Build cURL commands visually with fields for method, URL, headers, query params, JSON / form / raw body, basic / bearer / API key auth, and timeout. Copy a ready-to-run command for terminal, scripts, and CI.

Convert cURL commands into structured JSON format or ready-to-use code snippets for Python, Node.js, PHP, and Go. Perfect for API testing, documentation, and development workflows.

Check live DNS records for a domain or IP, including A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV and PTR data. Use it to troubleshoot website routing, email delivery, reverse DNS, SPF and DMARC policies and nameserver delegation.

Look up when a domain was first registered and estimate its age from live WHOIS and RDAP data. Review the registration date, age in years and days, registrar, last update, expiry, registry statuses and nameserver clues.

Free Domain Trust Checker tool to instantly estimate any website's Domain Trust Score (DTS) and Page Trust Score (PTS) based on domain characteristics, SSL security, DNS health, and brand signals — with detailed scoring breakdown.

Convert any PNG, JPG or WebP image into a standard .ico file and every icon size modern browsers, Apple devices and Android need - 16x16 through 512x512, including the 180x180 Apple Touch icon - with a live preview.

Browse a library of 40+ common Git tasks described in plain English. Pick the task and get the correct command with flag-by-flag explanations, a visual commit-graph diagram, safety warnings, undo hints and editable placeholders.

Calculate and estimate your Google AdSense earnings with our free calculator. Analyze page impressions, CTR, CPC, eCPM, and projected revenue with interactive visualizations and earnings breakdown.

Check the uncompressed size of any URL (HTML or PDF) to ensure it fits within Googlebot's crawling limits. Detect if your content exceeds the processing threshold (e.g., 2MB for HTML, 64MB for PDF) and prevent indexing truncation.

Generate hreflang tags for multilingual and multiregional websites. Supports HTML link tags, HTTP headers, and XML sitemap formats with built-in validation and smart URL auto-fill.

Generate correct Apache .htaccess code snippets for 301 redirects, HTTPS enforcement, IP blocking, www normalization, and URL rewriting. Features live preview, visual flow diagrams, and copy-ready code with detailed explanations.

Compress and minify HTML code online. Remove whitespace, comments, and line breaks to reduce file size with visual compression statistics.

Convert special characters to their corresponding HTML entities (encoding) or decode HTML entities back to normal text (decoding) for safe display of code on websites.

Convert HTML code to plain text by removing all HTML tags, scripts, styles, and comments. Extract readable content instantly with detailed conversion statistics.

Browse, search and filter every HTTP status code from 1xx to 5xx. Each entry gives the canonical meaning, RFC reference, when to use it, common pitfalls and ready-to-paste samples for Express, Django, FastAPI and Go net/http.

Generate JSON Schema from sample JSON data with inferred types, required fields, nullable values, formats, examples, and a readable schema map for API documentation and validation.

Escape special characters (quotes, backslashes, newlines, etc.) in a string so it can be safely used inside a JSON structure, or revert escaped JSON strings back to their original form.

Analyze text to find the most frequently used words and phrases (1-word, 2-word, 3-word) and their percentage usage. Essential tool for SEO optimization and content analysis.

Compile Less to CSS directly in your browser with live preview, math evaluation, source map preview, output formatting, copy and download actions, and side-by-side Less vs CSS comparison.

Generate customizable Lorem Ipsum placeholder text for web design and mockups. Create paragraphs, sentences, or words with HTML formatting options.

Convert CSV data or tab-separated text columns directly into a formatted Markdown table structure for use in GitHub READMEs, documentation, and other Markdown documents.

Generate SEO meta tags, Open Graph tags, and Twitter Card tags with live preview for Google, Facebook, and X (Twitter). Real-time character counters and one-click copy.

Preview and validate Open Graph meta tags by checking a live URL or pasted HTML. Inspect og:title, og:description, og:image, canonical links, Twitter fallbacks, duplicate tags and the share-preview issues that break social cards.

Analyze page load speed, response headers, and performance metrics. Get actionable insights to improve your website's speed, caching, compression, and security headers.

Convert pt to px and back for both CSS and print. Get the fixed web answer (1pt = 1.3333px at 96 DPI) alongside the real device-pixel answer at 72, 150, 300 or 600 DPI, plus the physical size on a ruler and copyable CSS.

Convert px to rem, rem to px, px to em and em to px with a custom root font-size. Batch-convert a whole type scale at once, copy ready-to-paste CSS, and see how your rem values respond when a visitor changes their browser font size.

Build URL query strings from key-value pairs, decode existing query parameters, choose plus or percent space encoding, inspect duplicate keys, and copy clean query strings or full URLs.

Trace and analyze HTTP redirect chains. See every hop, status code, response time, and headers in the redirect path from origin to final destination.

Create a production-ready robots.txt for search engines and validate the directives before publishing. Generate global and bot-specific rules, add sitemap and crawl hints, and catch mistakes like overly broad disallow patterns.

Compile SCSS to CSS directly in your browser with live preview, output formatting, presets, copy and download actions, and practical Sass syntax guidance.

Replace curly smart quotes and apostrophes (created by Word processors) with standard straight quotes to fix code syntax errors and ensure compatibility.

Format and beautify messy SQL queries into clean, readable code. Supports Standard SQL, MySQL, and PostgreSQL with customizable indentation, keyword casing, and live preview. Perfect for developers, DBAs, and data analysts.

Optimize and compress SVG files online for free. Remove unnecessary code, minify colors, round numbers, and reduce file size without losing visual quality. Perfect for web performance optimization.

Convert pasted or uploaded SVG files into clean React JSX components with camelCased attributes, optional TypeScript props, forwardRef, React.memo, title accessibility, style object conversion, and sanitized output.

Write, compile, type-check, and run TypeScript in your browser with live diagnostics, JavaScript output, strict mode controls, quick examples, and a sandboxed console.

Interactively calculate Unix/Linux file permissions (chmod) with visual permission matrix, security risk assessment, terminal preview, and ready-to-use commands.

Parse any URL into protocol, username, password, host, port, path, query parameters, and fragment. Includes a visual URL anatomy map, decoded values, duplicate query detection, and copy-ready parts.

Convert article titles and text into clean, SEO-friendly URL slugs with lowercase letters, alphanumeric characters, and hyphens for better search engine optimization.

Calculate the monetary value of each page view on your website. Analyze revenue per visitor, CPM equivalent, break-even traffic, and compare with industry benchmarks to optimize your content monetization strategy.

Calculate the monetary value of each website visitor with revenue analysis, conversion funnel visualization, and actionable insights to optimize your traffic ROI.

Look up public WHOIS and RDAP data for a domain to review registration and expiry dates, registrar, nameservers, registry status codes and DNSSEC hints - useful for due diligence, SEO research, security reviews and acquisitions.

Generate a production-ready XML sitemap for websites, blogs, ecommerce catalogs and multilingual pages. Paste one URL per line, attach lastmod, changefreq, priority, images and hreflang alternates, and get crawl coverage stats.