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CSS Unit ConverterColor ToolkitGradient GeneratorcURL BuilderURL ParserURL Encoder/DecoderHTTP Status CodesBox Shadow GenFavicon GeneratorQR Code GeneratorFlex & Gridrobots.txt Tester
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What Is My IP?IPv6 TestSpeed TestHTTP Request Headers
DNS LookupDNS PropagationDNS Health CheckerSPF AnalyzerPTR LookupCAA RecordSRV RecordDNS TraceDNS PrivacyDANE / TLSADNSSEC CheckerSPF BuilderDKIM GeneratorZone DiffPTR Zone Generator
Subnet CalculatorCIDR Range ViewerVLSM CalculatorVLAN PlannerBandwidth CalcIPv6 Subnet CalcIP ↔ BinarySupernet CalcCIDR MergeCIDR to IP RangeCIDR SplitIPv4 → IPv6CIDR OverlapFree IP Space FinderDHCP CalculatorMTU Calculator
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Email InspectorDKIM CheckerEmail HeadersSMTP Test
SMTP TLS CheckSoon
MX Health CheckEmail SecurityDMARC Generator
Temp MailSoon
Is It Down?SSL/TLS CheckerOpen Port CheckerOG Tag CheckerOCSP CheckerPing / LatencyHTTP InspectorRedirect ChainCSP AnalyzerTech Stack CheckerBetaTracerouteBetaHTTP/2 + HTTP/3robots.txt ViewerSSL Cert DecoderBanner GrabberWebSocket TesterCORS TesterHTTP TimingStructured DataPWA ManifestSEO Auditor
One-Time SecretHash GeneratorPassword StrengthSecurity.txtCT Log SearchAXFR Zone Test
HTTP Sec ScoreSoon
WebRTC Leak TestIP Reputation
JSON FormatterYAML FormatterBase64 / URL EncodeJWT DecoderRegex TesterUnix TimestampCron BuilderUUID / ULIDPunycode / IDNBase ConverterACL Generator
CSS Unit ConverterColor ToolkitGradient GeneratorcURL BuilderURL ParserURL Encoder/DecoderHTTP Status CodesBox Shadow GenFavicon GeneratorQR Code GeneratorFlex & Gridrobots.txt Tester
Text CompareCase ConverterText CleanerText AnalyzerText TransformerList ToolsLorem GeneratorSlug Generator
Cloud VPC PlannerCloud IP RangeSecurity GroupsIAM AnalyzerK8s CIDR PlannerFirewall BuilderHCL FormatterEgress Cost CalcCloud DNS Zone
VM Cost EstimatorSoon
Proxmox Net ConfigVMware Port GroupHyper-V vSwitchVXLAN VNI PlannerKVM Net ConfigXCP-ng NetworkNSX-T Segment
Disposable Email DetectorPhone InspectorTor Exit NodeVPN/Proxy DetectDomain ReputationTyposquat DetectUsername SearchFavicon Hash
GitHub ActionsDockerfile Gendocker-composeArgoCD AppK8s Manifests
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cURL Command Builder

Build HTTP request code from a visual form. Fill in the URL, method, headers, auth and body - get curl, fetch, axios or Python snippets ready to paste.

Examples:
HEADERS
:
AUTH
OUTPUT
Enter a URL above to generate the command.

Related Tools

HTTP Inspector

Inspect response headers and grade the HTTP security configuration for any URL. One request - raw headers and an A‑F security score side by side.

URL Encoder/Decoder

Encode or decode URL percent-encoded strings. Choose the mode that matches your use case - full URL, query string, or single component.

ACL Generator

Build Cisco IOS and iptables access control rules visually. Add permit/deny entries and copy the ready-to-paste config.

About this tool

The cURL Command Builder generates ready-to-use HTTP request code from a visual form - no manual flag memorization required. Configure the URL, HTTP method, request headers, authentication and body in point-and-click controls, then copy the resulting command in four formats: curl (for terminals and scripts), fetch (browser JavaScript and Node.js), axios (the most popular Node.js HTTP client), and Python requests (the standard library for HTTP in Python).

Auth modes cover the three most common patterns: Bearer Token (OAuth 2.0 and JWT APIs), HTTP Basic Auth (legacy APIs and basic access control), and API Key (in a header or as a query parameter). The tool encodes Basic Auth credentials as a Base64 string automatically. For POST, PUT and PATCH requests, the body section appears with content-type selection: JSON (sets Content-Type: application/json), URL-encoded form data, or raw body. Everything runs in your browser - no data is sent to any server.