All 101 Free Online Tools
Browse our complete collection of free browser-based tools. No signup, no downloads.
ASN Lookup Tool - Free Online ASN Lookup Tool
Look up Autonomous System Number (ASN) information for any IP address or domain. Free online tool, n
Free Bandwidth Calculator
Calculate download and upload time based on file size and connection speed. Estimate transfer time f
Base64 Encoder/Decoder - Network Data Tool
Encode and decode Base64 data for network protocols, API authentication, and data transfer. Supports
Free Base64 Image Encoder/Decoder
Encode images to Base64 or decode Base64 strings to images No signup required, works directly in you
Base64 URL Encoder - Free Online Tool
Base64 URL Encoder - Free online tool. No signup required No signup required, works directly in your
SSL Certificate Decoder - Parse X.509 Certificates
Decode and inspect SSL/TLS certificates. View subject, issuer, validity dates, SANs, and key details
Free CIDR Calculator
Calculate CIDR notation, subnet mask, and IP ranges from network addresses No signup required, works
CIDR to IP Range - Free Online Tool
CIDR to IP Range - Free online tool. No signup required No signup required, works directly in your b
CNAME Lookup Tool - Free Online Tool
CNAME Lookup Tool - Free online tool. No signup required No signup required, works directly in your
CNAME Lookup - Free Online Tool
Free online cname lookup - lookup CNAME DNS records for any domain. No installation, no sign-up requ
Free Color Contrast Checker
Check color contrast ratio for WCAG accessibility compliance No signup required, works directly in y
Free CORS Header Tester
Test CORS (Cross-Origin Resource Sharing) headers of any URL. Debug CORS issues. Free online network
Free Cron Expression Parser
Parse cron expressions and see next run times. Understand cron syntax No signup required, works dire
Free Cron Expression Viewer
Parse and explain cron expressions. See next run times No signup required, works directly in your br
Free DNS Lookup Tool
Look up DNS records for any domain using public DNS-over-HTTPS resolvers No signup required, works d
DNS Propagation Checker - Free Online Tool
Free online dns propagation checker - check DNS record propagation across global servers. No install
DNS Record Types - Free Online Tool
DNS Record Types - Free online tool. No signup required No signup required, works directly in your b
Domain Age Checker - Free Online Tool
Domain Age Checker - Free online tool. No signup required No signup required, works directly in your
Free Domain Name Checker
Check domain name availability across popular TLDs. Find your perfect domain. Free online network to
Free Domain WHOIS Lookup
Look up domain registration information. Check availability and expiry No signup required, works dir
Email Header Analyzer - Free Online Tool
Email Header Analyzer - Free online tool. No signup required No signup required, works directly in y
Free Email Address Validator
Validate email address format. Check syntax, MX records, and common typos. Free online network tool.
Free File Type Checker
Identify file type by its magic bytes (file signature). Works without relying on file extension.
HTTP Header Checker - Analyze Response Headers
Free HTTP header checker tool. Analyze HTTP response headers, check security headers, and get a secu
HTTP Headers Checker - Free Online Tool
HTTP Headers Checker - Free online tool. No signup required. Fast, private, works in your browser.
Htaccess Generator - Free Online Tool
Htaccess Generator - Free online tool. No signup required No signup required, works directly in your
Free Online HTTP Header Checker
Inspect HTTP response headers of any URL with our free online HTTP header checker. Debug caching, se
HTTP Headers Checker - Check HTTP Response Headers Free
Check HTTP response headers of any website. Analyze security headers, caching, content-type, and mor
HTTP Method Tester - Free Online Tool
HTTP Method Tester - Free online tool. No signup required No signup required, works directly in your
HTTP Request Builder - Test API Endpoints
Build and test HTTP requests online. Send GET, POST, PUT, DELETE requests with custom headers and bo
Free HTTP Request Tester
Send HTTP requests and view responses. Test APIs with GET, POST, PUT, DELETE No signup required, wor
HTTP Status Code Checker - Complete Reference Guide
Complete HTTP status code reference. Search, filter, and learn about all HTTP response codes from 1x
HTTP/2 Checker - Free Online Tool
Free online http/2 checker - test if a website supports HTTP/2 protocol. No installation, no sign-up
Free Internet Speed Indicator
Estimate your internet connection speed. Download speed test No signup required, works directly in y
IP Blacklist Checker - Check if IP is Blacklisted
Free IP blacklist checker. Check if an IP address appears on major DNS blacklists (DNSBL/RBL). Essen
IP Geolocation Lookup - nettool1.com
Find the geographic location of any IP address Free online tool with instant results. No installatio
IP Lookup - What Is My IP
Find your public IP address and geolocation. Get IP details including city, country, ISP, and timezo
IP Range Calculator - Free Online Tool
Calculate IP address ranges, subnet details, and CIDR notation. Convert between IP ranges and CIDR b
Free IP Subnet Calculator
Calculate subnet details from IP address and CIDR notation. Network, broadcast, and host range.
IPv4 to IPv6 Converter - Free Online Tool
IPv4 to IPv6 Converter - Free online tool. No signup required No signup required, works directly in
IPv6 Address Tools - Free Online Tool
IPv6 Address Tools - Free online tool. No signup required No signup required, works directly in your
Free JSON API Tester
Test JSON APIs with GET requests. View formatted responses No signup required, works directly in you
JSON Formatter - Format & Beautify JSON Online
Free online JSON formatter and beautifier. Validate, format, and syntax highlight JSON data with cus
JWT Decoder - Free Tool
Decode and inspect JSON Web Tokens with our free online JWT decoder. View header, payload, and verif
Free Online Free JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, and signature No signup required, works di
Free Keyboard Tester
Test every key on your keyboard. Visual feedback shows which keys work. Detect stuck or broken keys.
Free MAC Address Lookup
Look up the manufacturer of any network device by its MAC address. Identify vendors from OUI databas
Free MAC Address Lookup
Look up MAC address vendor information. Identify device manufacturers No signup required, works dire
Free Microphone Test
Test your microphone online. See audio levels in real-time. No data is uploaded or recorded.
MIME Type Checker - Free Online Tool
MIME Type Checker - Free online tool. No signup required No signup required, works directly in your
MX Record Lookup - Free Online Tool
Free online mx record lookup - lookup mail exchange (MX) DNS records. No installation, no sign-up re
What Is My IP Address - Free IP Checker
Instantly find your public IP address, location, and ISP information. Free online IP checker with au
Network Calculator - IP Subnet Calculator
Free IP network calculator. Enter an IP address and CIDR notation to calculate network address, broa
Network Latency Tester - Free Online Tool
Network Latency Tester - Free online tool. No signup required No signup required, works directly in
Network Latency Tester - Free Online Tool
Test network latency to multiple endpoints simultaneously. Compare response times across servers and
Network Mask Converter - Free Online Tool
Network Mask Converter - Free online tool. No signup required No signup required, works directly in
Network Speed Estimator - Free Online Tool
Network Speed Estimator - Free online tool. No signup required No signup required, works directly in
Password Generator - Create Strong Random Passwords
Generate strong, random passwords instantly. Customize length, include uppercase, lowercase, numbers
Free Password Strength Checker
Check how strong your password is. Get tips to improve security No signup required, works directly i
Free Password Strength Checker
Check how strong your password is. Get tips to make it more secure. Nothing is sent to any server.
Ping Time Calculator - Free Online Tool
Ping Time Calculator - Free online tool. No signup required No signup required, works directly in yo
Free Online Ping & Speed Test
Test your internet connection speed and latency. Measure download speed and ping to various endpoint
Ping Tool - Free Online Ping Tool
Test network connectivity by pinging any hostname or IP address. Check if a server is reachable, mea
Free Online Free Port Checker
Check if a port is open on a remote host. Test common service ports No signup required, works direct
Free Online Port Scanner
Scan open ports on any host with our free online port scanner. Check common ports and detect running
Port Scanner Guide - Free Online Tool
Port Scanner Guide - Free online tool. No signup required No signup required, works directly in your
QR Code Generator - Free Online Tool
QR Code Generator - Free online tool. No signup required No signup required, works directly in your
Redirect Checker - Check URL Redirect Chain & Types...
Free URL redirect checker. Analyze redirect chains, understand 301, 302, 307, 308 redirect types, an
HTTP Response Headers - Free Online Tool
HTTP Response Headers - Free online tool. No signup required No signup required, works directly in y
Response Time Checker - Measure Server Response Time
Free online response time checker. Measure server response time, latency and performance. Test multi
Reverse DNS Lookup - Find Hostname from IP
Free reverse DNS lookup tool. Find the hostname associated with any IP address using PTR records.
Robots.txt Checker & Analyzer - Parse and Validate Ru...
Free robots.txt checker and analyzer. Parse User-agent, Allow, Disallow, and Sitemap directives. Tes
Free Screen Resolution Checker
Check your screen resolution, DPI, color depth, and display information instantly.
Free Internet Speed Test
Measure your internet download speed with our free online speed test. Get accurate connection speed
Internet Speed Test Guide - Free Online Tool
Internet Speed Test Guide - Free online tool. No signup required No signup required, works directly
SSL Certificate Checker - Free Online Tool
Free online ssl certificate checker - check SSL/TLS certificate details and expiration. No installat
Free SSL Certificate Checker
Check SSL certificate details for any website. Verify expiry and security status.
SSL Certificate Info - Free Online Tool
SSL Certificate Info - Free online tool. No signup required No signup required, works directly in yo
Free Online Subnet Calculator
Calculate subnet mask, network address, broadcast address, and IP range from CIDR notation. Free onl
TCP Ping Tool - Free Online Tool
Test TCP connectivity to any host and port. Measure connection latency and check port availability.
TCP/UDP Port Reference - Free Online Tool
TCP/UDP Port Reference - Free online tool. No signup required No signup required, works directly in
Online Traceroute Tool - Visual Network Path Tracer
Visualize network paths with our online traceroute tool. Learn how traceroute works with interactive
Traceroute Guide - Free Online Tool
Traceroute Guide - Free online tool. No signup required No signup required, works directly in your b
Traceroute Tool - Free Online Tool
Trace the network path to any host and visualize each hop with latency information.
Website Uptime Monitor - nettool1.com
Check if websites are up and measure response times No signup required, works directly in your brows
URL Decoder - Free Online Tool
URL Decoder - Free online tool. No signup required No signup required, works directly in your browse
URL Encoder/Decoder - Encode & Decode URLs Online
Free online URL encoder and decoder. Encode special characters for URLs or decode percent-encoded st
Free URL Parser & Analyzer
Parse and analyze URL components. Extract protocol, host, path, query, and hash.
Free User Agent Parser
Parse and analyze browser user agent strings. Detect browser, OS, and device No signup required, wor
Free Online Webcam Test - Check Camera & Resolution
Test your webcam online instantly. Check if your camera works, see resolution and frame rate. Free w
Free Website Speed Test — Measure Load Time & TTFB
Test any website's loading speed instantly. Measure TTFB, download time, and total load time. Get pe
Free Website Status Checker
Check if a website is up or down with our free online website status checker. Test response time and
Free Website Status Checker – Is It Down?
Check if any website is up or down right now. Get HTTP status code, response time, and server info.
Website Tech Detector - Free Online Tool
Website Tech Detector - Free online tool. No signup required No signup required, works directly in y
Website Technology Checker - Free Online Tool
Website Technology Checker - Free online tool. No signup required. Fast, private, works in your brow
WebSocket Tester - Free Online Tool
Test WebSocket connections, send messages, and monitor real-time responses. Debug WebSocket APIs.
Free What Is My Browser
Detect your browser name, version, operating system, screen resolution, and more. Instant results.
WHOIS Lookup Guide - Free Online Tool
WHOIS Lookup Guide - Free online tool. No signup required No signup required, works directly in your
Free Online WHOIS Lookup
Look up domain registration details with our free online WHOIS lookup tool. View registrar, expiry d
Free WiFi QR Code Generator
Generate QR codes for WiFi networks. Share your WiFi password easily No signup required, works direc
Free Online ZIP Extractor
Extract ZIP files in your browser. View contents and download individual files. No upload to server.