All Developer Utilities & Tools

Search or browse our full library of 36 free client-side and diagnostic tools. No signups, no latency, just fast solutions.

Browse all categories

📧

Email Tools →

Inspect and validate domain SPF authentication records

Verify domain public keys and selector signatures

Validate DMARC policy rules and reporting targets

🌐

DNS & Domain →

Query Mail Exchanger records for any domain

Inspect DNS configurations via Secure DoH

Query registrar registry details and ownership details

🔒

SSL & Certificates →

SSL Certificate Checker

Audit Subject, Issuer, and security parameters of certificates

SSL Expiry Checker

Calculate certificate lifespans and countdown to expiration

📡

Network & IP →

View your current public IPv4 and IPv6 address details

Query global records using secure Cloudflare API

Audit domain register entries and authoritative nameservers

⚙️

Encoding & Crypto →

Base64 Encoder/Decoder

Translate text inputs to and from Base64 layouts

URL Encoder/Decoder

Encode or decode special parameter characters safely

MD5 Hash Generator

Compute 128-bit MD5 checksum digests instantly

SHA Hash Generator

Generate secure SHA-1, SHA-256, and SHA-512 hashes

🛠️

Developer Tools →

Prettify, minify, and validate nested JSON codes

Generate secure bulk random v4 UUID identifiers

Timestamp Converter

Convert epoch timestamps to readable local and UTC dates

Test regular expressions with interactive group highlights

Markdown Preview

Draft formatted text with live secure HTML previews

Cron Expression Parser

Parse and describe cron intervals in plain English

HTTP Headers Checker

Audit server response headers and latency response times

Redirect Chain Tracer

Inspect redirects and map redirection paths

CSV ↔ JSON Converter

Convert structured CSV tables to JSON arrays and back

Parse and inspect JSON Web Tokens in the browser

📝

Text & Content →

Analyze word counts, character lengths, and reading times

Switch string formats between lower, UPPER, and camelCase

Lorem Ipsum Generator

Generate classical dummy placeholder Latin text

✨

Password Generator

Generate mathematically strong random passwords

QR Code Generator

Convert texts or website links into high-quality QR codes

🎨

Colour & Design →

Colour Format Converter

Translate codes between HEX, RGB, HSL, and HWB

Box Shadow Generator

Visually generate layered CSS shadow properties

Contrast Checker

Verify WCAG AA and AAA accessibility color compliance

🗺️

Web & SEO Tools →

XML Sitemap Generator

Create and download search-engine compliant sitemap.xml files from a list of URLs