All Free Tools

Browse all 22 free online tools. All tools run entirely in your browser — no signup, no data uploaded.

Encode and decode Base64 data for network protocols, API authentication, and data transfer. Supports text and binary inp...

Calculate IP ranges, subnet masks, broadcast addresses from CIDR notation. Free online network tool.

Test CORS (Cross-Origin Resource Sharing) headers of any URL. Debug CORS issues. Free online network tool.

Parse and explain cron expressions. See next run times and human-readable descriptions. Free online network tool.

Query DNS records for any domain with our free online DNS lookup tool. Get A, AAAA, MX, TXT, NS, and CNAME records. No s...

Check domain name availability across popular TLDs. Find your perfect domain. Free online network tool.

Validate email address format. Check syntax, MX records, and common typos. Free online network tool.

Inspect HTTP response headers of any URL with our free online HTTP header checker. Debug caching, security, and CORS hea...

Find the geographical location of any IP address. City, country, ISP, timezone. Free online network tool.

Find your public IP address and geolocation. Get IP details including city, country, ISP, and timezone.

Decode and inspect JSON Web Tokens with our free online JWT decoder. View header, payload, and verify token structure. N...

Look up the manufacturer of any network device by MAC address with our free online MAC address lookup tool. No signup re...

Test your internet connection speed and latency. Measure download speed and ping to various endpoints.

Scan open ports on any host with our free online port scanner. Check common ports and detect running services. No signup...

Measure your internet download speed with our free online speed test. Get accurate connection speed estimates instantly....

Check SSL certificate details for any domain with our free online SSL checker. View expiry date, issuer, and chain info....

Calculate subnet mask, network address, broadcast address, and IP range from CIDR notation. Free online subnet calculato...

Parse and analyze browser user agent strings with our free online UA parser. Detect browser, OS, and device type. No sig...

Check if a website is up or down with our free online website status checker. Test response time and HTTP status code. N...

Look up domain registration details with our free online WHOIS lookup tool. View registrar, expiry date, and name server...

Find your public IP address and location instantly

Generate strong, random passwords securely