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.*RegexPatterns, testing, extraction and replacement1 guides → {}JSONFormatting, validation and API data workflows2 guides → 64Encoding & Base64Base64, URL encoding and safe data transport1 guides → #Security & HashingHashes, HMAC, certificates, JWT and keys6 guides → SEOTechnical SEOCrawling, URLs, redirects and search diagnostics1 guides → HTTPHTTP & NetworkHeaders, status codes, requests and debugging3 guides →

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Featured guideAI

TOON Format Guide

TOON Format Guide covering TOON v4.1 syntax, JSON conversion, tabular arrays, LLM prompts, token efficiency, strict validation, and practical workflows.

7 min readUpdated Sep 8, 2026

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Trexmi developer guide with practical examples and testing workflow

Latest guides

Latest Guides

Focused guides with tested examples and direct links to useful Trexmi tools.

Guide Security

API Keys Guide

API Keys Guide covering secure generation, storage, scopes, headers, rotation, revocation, logging, HMAC signing, and credential security.

5 min readUpdated Aug 13, 2026

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API Keys Guide showing secure generation storage scopes rotation and revocation

Guide Data & Code

XML Guide

XML Guide covering syntax, elements, attributes, namespaces, validation, formatting, parsing, security, common errors, and a practical debugging workflow.

7 min readUpdated Aug 11, 2026

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XML Guide showing elements attributes namespaces validation formatting and structured XML debugging

Guide HTTPS

SSL Certificate Guide

SSL Certificate Guide covering TLS, certificate fields, SANs, trust chains, expiration, fingerprints, common errors, renewal, and HTTPS troubleshooting.

8 min readUpdated Aug 11, 2026

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SSL Certificate Guide showing TLS certificate hostname SAN issuer expiration trust chain and HTTPS validation

Guide CORS

CORS Guide

CORS Guide covering origins, same-origin policy, preflight, Access-Control headers, credentials, common errors, security, and browser API debugging.

6 min readUpdated Aug 9, 2026

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CORS Guide showing browser origins preflight access control headers credentials and API debugging workflow

Guide HTTP

HTTP Headers Guide

HTTP Headers Guide covering request and response headers, caching, redirects, authentication, security, CORS, cookies, proxies, SEO, debugging, and best practices.

8 min readUpdated Aug 10, 2026

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HTTP Headers Guide showing request response caching security authentication CORS and debugging workflow

Guide HTTP

HTTP Status Codes Guide

HTTP Status Codes Guide covering 2xx, 3xx, 4xx and 5xx responses, redirects, API errors, SEO, caching, authentication, rate limits, and debugging.

7 min readUpdated Aug 9, 2026

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HTTP Status Codes Guide showing response classes, redirects, API errors, and debugging workflow

Guide Cryptography

Hashing Guide

Hashing Guide covering SHA-256, SHA-512, MD5, SHA-1, HMAC, checksums, salts, password hashing, collisions, file verification, and practical examples.

8 min readUpdated Aug 9, 2026

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Hashing Guide showing deterministic hash output, SHA-256, HMAC, salts, and collision-resistant workflows

Updated guide URL Encoding

URL Encoding Guide

URL Encoding Guide covering percent-encoding, UTF-8, query strings, paths, spaces, plus signs, double encoding, security, and practical code examples.

5 min readUpdated Aug 10, 2026

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