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HostGraber Tools
HOSTGRABER FREE TOOLS

Powerful tools for hosting, networks and servers.

Diagnose domains, verify email security, size infrastructure, encode/hash data and generate production-ready configurations—all free, fast and privacy-first.

TOOL CATEGORY

Domain & DNS

6 tools

WHOIS Lookup

Find domain registration, registrar, nameserver and lifecycle details with a fast WHOIS search.

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DNS Lookup

Inspect A, AAAA, CNAME, MX, TXT, NS and SOA records for any domain.

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Reverse DNS

Resolve an IP address to its pointer hostname and verify reverse DNS configuration.

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MX Lookup

Find the mail servers responsible for receiving email for a domain.

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IP Lookup

Resolve a domain to its public IP and inspect address and reverse-hostname details.

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IPv4 Subnet Calculator

Calculate network address, broadcast address, usable IP range and host capacity from an IPv4 address and CIDR prefix.

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TOOL CATEGORY

Email Security

3 tools

SPF Checker

Validate the SPF policy that authorizes mail servers to send for your domain.

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DKIM Checker

Find and validate a DKIM public key using your domain and selector.

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DMARC Checker

Inspect your DMARC policy, reporting destinations and enforcement level.

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TOOL CATEGORY

Network & SSL

5 tools

Ping Test

Measure four TCP connection attempts to a host over the standard HTTPS port.

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Traceroute

Trace the network hops between HostGraber’s server and a public internet host.

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SSL Checker

Check certificate validity, issuer, subject, expiry date and remaining lifetime.

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SSL Generator

Generate a 2048-bit RSA private key and certificate signing request in your browser session.

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HTTP Header Checker

Fetch a URL and inspect its HTTP status code and response headers.

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TOOL CATEGORY

Developer Generators

5 tools

Password Generator

Create a strong cryptographically random password with adjustable length and symbols.

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Random String Generator

Generate secure alphanumeric, alphabetic or hexadecimal strings up to 512 characters.

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UUID Generator

Generate standards-friendly UUID v4 or time-sortable UUID v7 identifiers instantly.

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Linux Cron Generator

Build a valid five-field Linux cron expression for any scheduled command.

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.htaccess Generator

Generate common Apache HTTPS, WWW, redirect and file-protection directives.

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TOOL CATEGORY

Encoding, Hashing & Code

5 tools

Base64 Encoder/Decoder

Convert plain text to Base64 or decode a Base64 string back to readable text.

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URL Encoder/Decoder

Percent-encode text for safe use in a URL, or decode an encoded URL back to plain text.

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 and CRC32 hashes for any text input.

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JWT Decoder

Decode a JSON Web Token header and payload to inspect its claims without verifying the signature.

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CSS/JS Minifier

Strip comments and unnecessary whitespace from CSS or JavaScript to reduce file size.

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TOOL CATEGORY

Design & Accessibility

1 tools

Color Contrast Checker

Calculate the WCAG contrast ratio between a foreground and background color.

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TOOL CATEGORY

Hosting Calculators

5 tools

Hosting Solution Finder

Find the right HostGraber hosting, VPS or server option based on your workload, operating system, users and performance needs.

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Server Sizing Calculator

Estimate vCPU, RAM and NVMe storage for websites, databases, ERP, CRM, applications and other server workloads.

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VPS Plan Calculator

Calculate a suitable VPS configuration and match it with current HostGraber VPS plans.

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Bandwidth Calculator

Estimate monthly bandwidth usage from average Mbps, daily usage hours and number of active days.

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Data Transfer Time Calculator

Estimate how long a file, backup or server migration will take at a given connection speed.

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TOOL CATEGORY

Server & Storage

4 tools

RAID Calculator

Calculate usable storage and disk-failure tolerance for RAID 0, 1, 5, 6 and 10 arrays.

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Backup Storage Calculator

Estimate backup capacity from dataset size, backup frequency, retention period and expected change rate.

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Uptime & SLA Calculator

Convert an uptime SLA into maximum allowable downtime per day, month and year.

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VM Capacity Calculator

Estimate virtual machine capacity from physical CPU cores, RAM, storage, reserves and CPU overcommit ratio.

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TOOL CATEGORY

Business Application Sizing

2 tools

Windows RDP Sizing Calculator

Estimate Windows VPS resources for Remote Desktop users, office applications and business software.

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ERP Server Sizing Calculator

Estimate server resources for Odoo, ERPNext, CRM and database-driven ERP workloads based on users, database size and workload intensity.

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TOOLS BACKED BY REAL INFRASTRUCTURE

Built for website owners, developers and server teams.

HostGraber’s free online tools help you inspect the same layers that keep a production website working: domain registration, authoritative DNS, email authentication, public routing, TLS certificates and server configuration.

Use the results to troubleshoot a current service, validate a migration or prepare a new deployment. When you need infrastructure behind the result, HostGraber provides domains, business email, SSL, web hosting, VPS, cloud compute and dedicated servers from India.

Register a domain →Explore web hosting →Tour our Kolkata datacenter →
ABOUT THE TOOLBOX

Free online tools FAQ

Are HostGraber tools free to use?+

Yes. The tools are available without registration and are designed for quick domain, website, email, network and developer checks.

Do these tools change my DNS or server?+

No. Lookup tools are read-only and generators only return text for you to review. Nothing is applied to your domain or server automatically.

Can HostGraber help me fix a failed result?+

Yes. Each tool page links to the most relevant HostGraber service, and existing customers can contact support for help with hosted domains, email, SSL and servers.

FROM TOOL TO INFRASTRUCTURE

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Start small. Scale without limits.

From your first website to serious production infrastructure, HostGraber gives you the hosting, cloud and compute to keep moving forward.

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