---
title: "EvvyTools.com (@evvytools) | Hashnode"
description: "Explore calculators, generators, developer utilities, and free downloadable data lists. Read the latest articles by EvvyTools.com on Hashnode."
url: "https://hashnode.com/@evvytools"
---

@evvytools

# EvvyTools.com

@evvytools · Worldwide · Joined March 2026

Explore calculators, generators, developer utilities, and free downloadable data lists.

### [How to Audit and Harden Your Site's HTTP Security Headers](https://microtooldiscovery.hashnode.dev/how-to-audit-and-harden-your-sites-http-security-headers?utm_source=hashnode&utm_medium=feed)

Paste your HTTP response headers and fix eight critical security gaps with platform-specific code

6 min read · [microtooldiscovery.hashnode.dev](https://microtooldiscovery.hashnode.dev/how-to-audit-and-harden-your-sites-http-security-headers?utm_source=hashnode&utm_medium=feed)

[May 8](https://hashnode.com/posts/how-to-audit-and-harden-your-sites-http-security-headers/69fdc1e1f8a65a2acb456d0e)

### [How to Use UUIDs as Database Primary Keys in PostgreSQL](https://microtooldiscovery.hashnode.dev/how-to-use-uuids-as-database-primary-keys-in-postgresql?utm_source=hashnode&utm_medium=feed)

A step-by-step guide to using UUID primary keys in PostgreSQL, including index performance, migration patterns, and ORM integration

7 min read · [microtooldiscovery.hashnode.dev](https://microtooldiscovery.hashnode.dev/how-to-use-uuids-as-database-primary-keys-in-postgresql?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/how-to-use-uuids-as-database-primary-keys-in-postgresql/69fc700b9319ffaa1edde56e)

### [12 Free Developer Tools for Working With UUIDs and Unique Identifiers](https://microtooldiscovery.hashnode.dev/12-free-developer-tools-for-working-with-uuids-and-unique-identifiers?utm_source=hashnode&utm_medium=feed)

A curated list of tools for generating, validating, and working with UUIDs and unique identifiers in development workflows

6 min read · [microtooldiscovery.hashnode.dev](https://microtooldiscovery.hashnode.dev/12-free-developer-tools-for-working-with-uuids-and-unique-identifiers?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/12-free-developer-tools-for-working-with-uuids-and-unique-identifiers/69fc7003f3b09654a8d18c11)

### [How to Audit Your Domain's DNS Security Records](https://microtooldiscovery.hashnode.dev/how-to-audit-your-domains-dns-security-records?utm_source=hashnode&utm_medium=feed)

A step-by-step walkthrough for checking SPF, DKIM, DMARC, CAA, and DNSSEC on any domain.

6 min read · [microtooldiscovery.hashnode.dev](https://microtooldiscovery.hashnode.dev/how-to-audit-your-domains-dns-security-records?utm_source=hashnode&utm_medium=feed)

[May 6](https://hashnode.com/posts/how-to-audit-your-domains-dns-security-records/69fb1d1a6bb27a92a1d23099)

### [A Developer's Walkthrough of Text Encoding in JavaScript](https://microtooldiscovery.hashnode.dev/a-developers-walkthrough-of-text-encoding-in-javascript?utm_source=hashnode&utm_medium=feed)

How to handle Base64, URL encoding, HTML entities, and binary data correctly in browser and Node.js environments

6 min read · [microtooldiscovery.hashnode.dev](https://microtooldiscovery.hashnode.dev/a-developers-walkthrough-of-text-encoding-in-javascript?utm_source=hashnode&utm_medium=feed)

[May 3](https://hashnode.com/posts/a-developers-walkthrough-of-text-encoding-in-javascript/69f728e5eb425c9a848dc199)