CSR (Certificate Signing Request) Generator Generate a PKCS#10 Certificate Signing Request and matching RSA private key entirely in your browser. Fill in the subject fields, add Subject Alternative Names, pick a key size, and click Generate. Both files are produced locally — the private key is never transmitted to any server, never logged, and never ...
Try the Tool »HAR to Postman Collection Converter Browser DevTools, Charles Proxy and mitmproxy all let you save captured traffic as a HAR (HTTP Archive) file, but Postman cannot import HAR directly. This converter rewrites a HAR export into a Postman Collection v2.1 JSON file in your browser, so you can replay every captured request as a real ...
Try the Tool »HAR File Performance Analyzer Upload or paste an HTTP Archive (HAR) file and instantly get a performance breakdown of every request the browser made: total transfer size, request count, slowest endpoints, biggest payloads, status code distribution and per-domain timing. Everything is parsed client-side in your browser — your HAR file never leaves the page. How ...
Try the Tool »Uptime / SLA Calculator Translate any service level agreement target into the precise downtime budget you are allowed across a year, quarter, month, week, day, or hour. The calculator works in three directions: convert an SLA percentage into allowed downtime, work backwards from a downtime ceiling to the SLA percentage you must commit to, and ...
Try the Tool »Web Vitals Score Calculator Plug in your LCP, INP, and CLS measurements and instantly see how your page rates against Google’s Core Web Vitals thresholds. The calculator returns a Good / Needs Improvement / Poor verdict per metric, a pass/fail summary for the page, and concrete fix suggestions for anything below target — all client-side, ...
Try the Tool »cURL to Code Converter Paste a curl command and instantly get the equivalent HTTP-client code in Python, JavaScript, PHP, Go, or Ruby. The converter runs entirely in your browser, parses curl with a real shell-aware tokenizer, and maps the flags you actually use — headers, JSON and form bodies, multipart uploads, basic auth, cookies, redirects, ...
Try the Tool »SWIFT/BIC Code Validator & Parser Paste any SWIFT or BIC code to validate its structure against the ISO 9362 specification and break it into its component parts. The tool checks character patterns, length, and identifies whether the code refers to a head office or a specific branch — all client-side, with no data ever leaving ...
Try the Tool »Network Speed Unit Converter Instantly convert between every common network and data transfer rate unit – bps, Kbps, Mbps, Gbps, Tbps, B/s, KB/s, MB/s, GB/s, TB/s, plus the binary IEC units like KiB/s and MiB/s. Type a value into any field and every other field updates live, so you never have to guess whether a ...
Try the Tool »Mock HTTP Response Builder Construct a structurally correct HTTP response message in seconds. Pick a status code, choose a body type, add headers, and the tool emits a ready-to-paste response string with the status line, headers, and body separated by CRLF — perfect for test fixtures, integration mocks, API documentation, and replaying responses against clients. ...
Try the Tool »Country Info Lookup Look up authoritative metadata for every country in the ISO 3166-1 standard — names, codes, dialing prefixes, currencies, capitals, and TLDs — in one place. The tool ships with a bundled dataset of 249 countries and dependent territories, so every search is instant, accurate, and works fully offline in your browser. Unlike ...
Try the Tool »Apache httpd Config Formatter Paste a messy Apache httpd.conf, apache2.conf, or sites-available/*.conf snippet and get back a properly indented, normalized configuration. The formatter walks <VirtualHost>, <Directory>, <Location>, <IfModule>, and other container tags to compute correct nesting depth, preserves your comments and blank lines, and can canonicalize directive case so that servername, SERVERNAME, and ServerName all ...
Try the Tool »Email Deliverability Checker Audit a domain’s email authentication setup in seconds. Enter any domain and the tool runs live DNS lookups against Cloudflare’s resolver to inspect SPF, DMARC, MX, and BIMI records, then surfaces real configuration problems with a clear pass/fail verdict and an overall deliverability score. How to Use Type the domain you want ...
Try the Tool »Access Log Formatter (Apache / Nginx) Paste raw Apache or Nginx access log lines and instantly turn them into a structured, sortable table. The Access Log Formatter detects whether each line is in the Common Log Format (CLF) or Combined Log Format (Apache’s default), then breaks every entry into clean columns: IP, date/time, method, path, ...
Try the Tool »NGINX Server Block Generator Build a ready-to-paste NGINX server block from a simple form. Pick a port, choose between serving static files or proxying to a backend, and toggle SSL, HTTP/2, gzip, and an HTTP-to-HTTPS redirect. The output updates as you type and is safe to drop straight into /etc/nginx/sites-available/ on most distributions. How to ...
Try the Tool »Cloud Bandwidth Cost Estimator This tool estimates how much you will pay each month for outbound internet egress on the major cloud providers, using current published list prices for AWS, Google Cloud, Azure, Cloudflare, DigitalOcean, and Backblaze B2. Enter your expected monthly transfer in GB, TB, or PB, pick the provider you currently use, and ...
Try the Tool »IPv4 to IPv6 Converter Convert any IPv4 address into every standard IPv6 representation in one click. The tool generates the IPv4-mapped form used by dual-stack sockets, the 6to4 prefix that delegates a /48 to a public IPv4, the deprecated IPv4-compatible form kept for legacy lookups, and the reverse DNS PTR record under ip6.arpa. Each result ...
Try the Tool »Fake IP Address Generator Generate batches of valid fake IPv4 and IPv6 addresses, filtered by RFC range type — private (RFC 1918), public, loopback, multicast, CGNAT (RFC 6598), link-local, ULA (RFC 4193), and documentation. Useful for seeding test data, populating mock APIs, demoing dashboards, or producing example traffic logs without leaking real addresses. How to ...
Try the Tool »HAR File Formatter & Request Inspector Drop in an HTTP Archive (.har) file exported from your browser’s DevTools and instantly see every request as a sortable, filterable waterfall — with full DNS, connect, SSL, wait, and download timings, plus the raw headers, body, and a ready-to-paste cURL command for any single request. Everything runs locally ...
Try the Tool »WebRTC IP Leak Detector WebRTC is a built-in browser API that powers voice and video calls without plugins. To connect two peers directly, it uses the ICE framework to gather candidate IP addresses — and that list includes the machine’s local LAN IP plus any public address a STUN server can see. When users run ...
Try the Tool »SSH Config File Generator Build a clean, syntactically correct ~/.ssh/config without memorizing directive names or hunting down options in the ssh_config man page. Add each SSH host with a visual form, pick presets for common services like GitHub, AWS EC2, or bastion jump hosts, and copy or download the finished config in one click. How ...
Try the Tool »Add IO tools to your favorite browser for instant access and faster searching
Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Update: Our latest tool was added on Jun 11, 2026
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