Every tool
94 free tools from all eleven guides. They all run in your browser: nothing you paste is sent anywhere.
94 free tools from all eleven guides. They all run in your browser: nothing you paste is sent anywhere.
A blue screen stop code, Windows Update error, Office or printer error code.
Help DeskA common ticket and you want a step-by-step path to the likely cause, the fix and ticket notes. Covers: Printer won't print; Outlook won't open or sync; No internet / can't reach a site; Account locked out / can't sign i
Help DeskBuilding a PowerShell script for the common repairs (DNS, spooler, Teams cache, Windows Update reset, SFC/DISM) to run on a user's PC.
Help DeskWorking out when a ticket must be responded to and resolved, in business hours or 24×7. Targets are examples: use your own.
Help DeskWriting a clean, complete ticket note to paste into the ticketing system. Nothing is saved.
Help DeskSending a clear outage notice, maintenance warning, follow-up or closing message.
Help DeskYou have an IP or MAC and need the other half, or you suspect an IP conflict. Paste show ip arp from the gateway.
Network OpsSeveral users on one switch report problems, or you want every failed authentication at once. Paste show access-session.
Network OpsConverting Mbps and MB/s, estimating a file transfer time, or checking how busy ports are from 'show interfaces'.
Network OpsYou have a list of MACs and want to know what they all are. Paste a show mac address-table dump, an AKiPS or Infoblox export, or a plain list in any format. VLAN and port are picked up from MAC-table lines.
Network OpsYou need to capture or filter traffic for one device. Get the Wireshark display filter, the capture (BPF) filter, a tcpdump command and Catalyst embedded-capture commands.
Network OpsYou're on an Arista or Aruba switch (or an AireOS controller) and know the Cisco command. Type it, or just the task.
Network OpsComparing a port or switch config before and after a change. Shows what changed per section and writes a rollback for the ticket.
Network OpsYou want to paste a config or output into an AI tool, a vendor case, email or a ticket. Strips passwords, secrets, keys, SNMP communities and certificates; can also mask IPs, MACs, hostnames and descriptions.
Network OpsBefore changing a port, or when one port behaves differently from its neighbors. Paste show run interface <port> and it's checked against the standard MAB user port.
Network OpsA port has errors and you need to know if they're happening now or are old history. Run show interfaces <port>, wait a few minutes, run it again, and paste both.
Network OpsPlanning a fiber run, or a new link won't come up or has low light. Compares the expected loss against what the optic can handle.
Network OpsYou're starting a no-network ticket, or want a second pair of eyes on the order to check things.
Network OpsAn IPv6 address shows up and you need it shortened, expanded, typed or turned into its network; or you want the link-local address a MAC would create.
Network OpsYou need to know what happened and when: link flaps, err-disable reasons, auth failures, PoE and config changes. Paste show logging, optionally filtered to one port.
Network OpsYou need to see what's attached to a switch: uplinks toward the core with their IPs, plus phones and APs. Paste show cdp neighbors detail or show lldp neighbors detail.
Network OpsA fiber link is down, flapping or erroring. Paste show interfaces transceiver detail. Add the other end's output to work out the loss across the link.
Network OpsYou have output and don't want to pick the tool. Paste it here and it's recognized and sent to the right analyzer, which opens with the answer.
Network OpsA user or tech sends you ping or traceroute output. Paste it (Windows, Linux, Mac or Cisco) to get loss, latency, jitter, and where a path breaks or slows down.
Network OpsAdding APs, cameras or phones to a switch, or devices power-cycle because the switch ran out of PoE.
Network OpsYou're about to change a port. Fill in what you know and get the before, change, revert and verify commands, ready to paste into the switch and the ticket.
Network OpsYou see a port number in netstat, a firewall log or a request, and need to know what it is (or the reverse).
Network OpsYou want the state of a whole switch at a glance: free ports for a re-patch, err-disabled or shut ports, and anything linked at the wrong speed or duplex. Paste show interfaces status.
Network OpsYou have output from a ticket and want the answer fast. Paste any mix of show interfaces, show interfaces status, TDR results, show power inline, show mac address-table and show access-session details.
Network OpsYou need a VLAN's range or gateway, or want to know whether a device's IP fits the subnet it's plugged into.
Network OpsA device authenticated into a VLAN but gets no IP, or a whole VLAN is dead on one switch. Paste show interfaces trunk and enter the VLAN.
Network OpsSplitting an address block into right-sized subnets for a new floor, clinic or closet.
Network OpsTurning latency, jitter and packet loss from a monitoring tool, ping test or call report into an estimated call quality score.
Voice & CollaborationA SIP response code in a trace or log, or a Reason header like Q.850;cause=34, and you need to know what it means and what to check.
Voice & CollaborationChecking an INVITE, 200 OK or other SIP message from a trace for NAT problems, hold state, codecs, SRTP and timers. Paste one message; it stays in your browser.
Voice & CollaborationSizing a WAN link, SIP trunk or QoS priority queue for a number of concurrent calls.
Voice & CollaborationDecoding lastLogonTimestamp, pwdLastSet, accountExpires, badPasswordTime or whenCreated values from AD, ADSI Edit or a CSV export.
Systems AdminTranslating Linux permissions between 755-style numbers and rwxr-xr-x, with warnings for risky settings.
Systems AdminReading a crontab line, or writing one for a Linux scheduled job. Shows the next run times.
Systems AdminA common ticket and you want a step-by-step path to the likely cause, the fix and ticket notes. Covers: User can't log on to the domain; Group Policy not applying.
Systems AdminYou know how to do it in one shell and need the other.
Systems AdminPlanning a server or NAS array: usable space, efficiency and how many disk failures it survives.
Systems AdminAn event ID in Event Viewer, a SIEM alert or a ticket, and you need to know what it means and what to check next.
Systems AdminReading dsregcmd /status output: join state, device health, MDM scope, PRT (single sign-on) and hybrid join errors, in plain English.
Endpoint ManagementFinding the right log, event channel, registry key or command for an enrollment, Autopilot, app, script, BitLocker, LAPS, ConfigMgr or Mac problem.
Endpoint ManagementAn enrollment, Autopilot, hybrid join or app install error from the Intune admin center, Company Portal or an event log. Accepts hex (0x87D1041C), the signed decimal Intune sometimes shows (-2016345060) or a keyword.
Endpoint ManagementPackaging an app for Intune: the IntuneWinAppUtil command, silent install and uninstall commands, a detection rule (with a file-version detection script) and the default return codes.
Endpoint ManagementReading a certificate: names, expiry, issuer, key and fingerprint. Paste one PEM certificate or a whole chain.
SecurityScoring a vulnerability, or reading a CVSS 3.1 vector from an advisory. Paste a vector or pick the metrics. CVSS 4.0 (2023) is the newest version; many advisories still give 3.1 scores, and the two versions score differe
SecurityA suspicious email: paste its full headers to see who really sent it, whether SPF, DKIM and DMARC passed, and the path it took.
SecurityA common ticket and you want a step-by-step path to the likely cause, the fix and ticket notes. Covers: User reports a suspicious email.
SecurityVerifying a download against the vendor's checksum, hashing text or a file for a report, or identifying what kind of hash you're looking at. Files never leave your computer.
SecurityPulling IPs, domains, URLs, emails, hashes and CVEs out of an alert, report or email, deduplicated and optionally defanged.
SecurityExplaining password strength to a user, or testing a passphrase idea. Checked only in your browser.
SecurityChecking a link without clicking it. Unwraps Safe Links and URL Defense, flags look-alike tricks, and gives a defanged copy for tickets.
SecurityA rough monthly cost for a workload, using rates you take from the provider's pricing page.
CloudReading an AWS IAM, bucket or resource policy in plain English, with warnings for wildcards, public access and privilege escalation.
CloudConverting or validating config: ARM/CloudFormation JSON, Kubernetes and pipeline YAML.
CloudYou know a service in one cloud and need its name in another. Search any name or need.
CloudTurning an uptime percentage into real downtime, or working out the combined availability of services that depend on each other.
CloudLaying out subnets for a new VPC or VNet across availability zones, with each cloud's reserved addresses taken out.
CloudA tag number like (0008,0050) in a log, dcmdump output or PACS error.
Healthcare ITSummarizing a FHIR resource or Bundle from an API: resource counts, key fields and references.
Healthcare ITChecking an NPI or LOINC check digit, an ICD-10-CM format, or converting a 10-digit NDC to the 11-digit billing format.
Healthcare ITCreating the acknowledgment for the message in the parser, for testing an interface by hand.
Healthcare ITReading a raw HL7 message: every segment and field labeled, components split, dates decoded. Use test data or de-identify first; nothing is sent anywhere.
Healthcare ITReading a cron schedule from crontab, Kubernetes CronJobs or CI pipelines.
Scripting & DevOpsBase64, URL, HTML and hex encoding; decoding a JWT to read its claims; or decoding a PowerShell -EncodedCommand.
Scripting & DevOpsMD5, SHA-1, SHA-256, SHA-384 and SHA-512 of some text (the Security guide's Hash Tool also does files).
Scripting & DevOpsAn API, browser or log shows an HTTP status code.
Scripting & DevOpsFormatting or validating JSON, or converting between JSON, YAML and CSV for configs, APIs and spreadsheets.
Scripting & DevOpsBuilding or debugging a regular expression against real text, with groups and a replace preview.
Scripting & DevOpsA random API secret, temporary password or UUIDs for config files.
Scripting & DevOpsComparing two versions of a script, config or output line by line.
Scripting & DevOpsA test is finished and you need to know whether B really beat A, by how much, and whether the split itself is trustworthy.
Data | AIYou know what you want to show and need the right chart, what to avoid, and the code.
Data | AIYou need the range around a mean or a rate, for a report or to see how precise an estimate is.
Data | AIYou have a classifier's results and want every metric (precision, recall, F1, specificity, MCC) explained in plain English.
Data | AIYou want to know whether two numbers move together: paste two columns (x then y) and get r, Spearman, R², the trend line and a scatter plot.
Data | AIYou have a new CSV or spreadsheet. Paste it (copy cells straight from Excel works too) and get types, missing values, duplicates, outliers and likely problems for every column.
Data | AIYou meet a Unix timestamp in a log, an Excel serial number like 46326, or need to convert between time zones or count days between dates.
Data | AIYou need a probability (the chance of 6 or more calls an hour, or a z-score's percentile), or want to see how a distribution's shape changes.
Data | AIReporting a change: percent vs percentage points, growth rates (CAGR), or a share of a total.
Data | AIYou want a reliable answer from an AI assistant. Pick the task, fill in what you know, and copy a well-structured prompt. Nothing is sent anywhere.
Data | AIYou have a list of numbers and want the summary: mean, median, spread, quartiles, outliers, a confidence interval and a histogram.
Data | AIPlanning a test or study: how many people or items you need in each group to reliably detect the change you care about.
Data | AIYou inherit a query you don't understand, or yours returns odd numbers. Paste it to get it formatted, explained step by step in the order it runs, and checked for common mistakes.
Data | AIChecking whether a document fits a model's context window, or estimating what an LLM job will cost before running it.
Data | AIYou need a statistical test and aren't sure which. Answer the questions and get the test, why, and the code in Python and R.
Data | AIA step-by-step path toward a target role: certs, skills and typical titles.
IT Career & CertsQuick practice for A+, Network+, Security+ or CCNA. The answer and explanation show as soon as you pick one.
IT Career & CertsTurning what you did into a resume bullet that shows impact.
IT Career & CertsStructuring a behavioral interview answer: Situation, Task, Action, Result.
IT Career & CertsTurning an exam date and the hours you have each week into a week-by-week plan, weighted by the exam's domains.
IT Career & Certs