A practical guide to formatting, minifying, and validating JSON while keeping development data in your browser.
Read guide →Encoding guideBase64 Encoding and Decoding: A Developer GuideUnderstand when to use Base64, how Base64URL differs, and how to encode or decode text and images safely.
Read guide →Security guideHow to Decode and Verify a JWT SafelyLearn the difference between decoding a JWT and verifying its signature, claims, and expiration.
Read guide →Text guideHow to Test a Regular ExpressionUse a repeatable workflow to test matches, capture groups, flags, and replacement behavior in a regex tester.
Read guide →Identifier guideUUID v1, v4, and v7: Which Version Should You Use?Compare UUID versions and choose an identifier format that fits application, database, and ordering requirements.
Read guide →Automation guideHow to Read and Test a Cron ExpressionUnderstand cron fields, validate a schedule, and preview upcoming execution times before deploying a job.
Read guide →Network guideHow to Check Your IP Address, Browser Leaks, and Network InformationLearn how to check a public IP address, compare IPv4 and IPv6, inspect WebRTC and browser IP leaks, and interpret location, ASN, and network details.
Read guide →Website monitoring guideHow to Check Website Availability, Status, and LatencyA practical guide to checking website availability, HTTP status codes, regional reachability, and response latency.
Read guide →Proxy guideHow to Test a Proxy, Check Proxy Health, and Compare RegionsLearn how to test a proxy, compare regional exits, diagnose timeouts, and interpret proxy checker results safely.
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