Free online web utilities

Finds country, region and ISP for an IP address.

Looks up WHOIS records for a domain or IP address.

Chinese lookup of IP address and phone number locations and postcodes.

Checks whether a website is currently reachable and reports response time.

Online viewer for the EXIF metadata embedded in photos.

Pings a host from multiple global locations at once.

Runs traceroutes to a host from several locations simultaneously.

Visual builder that produces CSS Grid code from drawn rows, columns and areas.

Virtual keyboards for typing in more than 200 languages and scripts.

Builds an M3U playlist and XMLTV guide of free channels for a ZIP code, for Plex, Kodi and VLC.

Open-data internet speed test run on the Measurement Lab platform.

Identifies the manufacturer of a network device from its MAC address.

Builds a mailto link with preset recipient, subject and body.

Resizes one image into all required iOS and Android app icon sizes.

Edit meta tags and preview how a page looks on Google, Facebook and X.

Tests your microphone and shows the audio level in the browser.

Resolves a hostname to its IP addresses and shows query timing.

Runs a bundle of mail, DNS, web and blacklist checks on a domain and flags problems.

Parses pasted email headers and shows the delivery hops, delays and authentication results.

Lists the MX records for a domain and tests the mail servers' connectivity.

Single box that runs MX, DNS, blacklist, SPF, DMARC and other lookups for a domain or IP.

Shows your public IP address and lets you run follow-up lookups on it.

Builds an HTML email signature from templates for Gmail, Outlook and Apple Mail.

Shows your public IP with geolocation, a speed test and DNS lookup tools.