Website & SEO tools

Free Whois lookup: domain registration and expiry dates, registrar, status, and name servers.

Find out when a domain expires, when it was created, and how many days are left. Add a renewal reminder in one click.

Check an SSL certificate: issuer, validity period, days remaining, and the domains it covers (SAN).

View a domain's DNS records: A, AAAA, MX, NS, TXT, CNAME, SOA — all in one table.

Check the server response: status code, redirect chain (301/302), and the page's HTTP headers.

See how a page looks in search and on social media: Title, Description, Open Graph, and Twitter Card.

Measure server response time: DNS, connection, TLS, time to first byte (TTFB), and full load.

Check whether a site is up: server response code, response time, and status — from our server, not your network.

Check the robots.txt file and whether sitemap.xml exists: indexing rules and the site map for search engines.

Find a site's IP address(es) by domain name, including IPv6 and the reverse DNS name (PTR).

Build a link with UTM tags (source, medium, campaign, and more) for tracking ad campaigns.

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of text online — checksums and digests in a second.

Encode text to Base64 or decode a Base64 string back. Works right in your browser.

Encode spaces, non-Latin characters, and special symbols in a URL (percent-encoding), or decode a link back.

Convert an internationalized domain to punycode (xn--...) and back — for DNS, SSL, and phishing checks.

Generate a strong random password of any length. The password is created in your browser and never sent to a server.

Check a domain's email authentication: SPF record, DMARC policy, and DKIM presence. Protection from spam and spoofing.

Create a QR code from a link or text and download a PNG. Free, no watermarks, generated in your browser.

Reduce the size of JPG/PNG photos without noticeable quality loss. All in the browser — files are never uploaded.

Paste a list of links and open them all in new tabs with one click. Handy for checking pages and routine tasks.

Count characters, words, and paragraphs in text. Shows the limits for X (Twitter), Telegram, Instagram, and meta tags.

Convert Cyrillic to Latin or a ready URL slug for pages and files. Readable and useful for SEO.

Convert text to the case you need: UPPERCASE, lowercase, Sentence case, Capitalise Each Word. Instant, in the browser.

Analyse text: word and phrase frequency, keyword density as a percentage. Helps you avoid over-optimising and stay on topic.

Build ready-to-paste <head> meta tag code: Title, Description, Open Graph, and Twitter Card. Copy and paste into your site.

Format JSON with indentation or minify it to one line. Error checking with the location shown. All in the browser.

Generate placeholder (Lorem ipsum) text of any length: paragraphs, sentences, or words. For layouts and design.

Convert a Unix timestamp to a date and a date to a timestamp. Current time, milliseconds, UTC, and local time.

Convert a colour between HEX, RGB, and HSL and see a preview. Handy for CSS, design, and palette work.