Developer & Security Tools
A curated suite of free, privacy-first utilities for developers and security professionals. All processing happens in your browser.
SAML Validator
Decode and validate SAML assertions. Inspect Issuer, NameID, Audience, Conditions, and signature presence.
OIDC / OAuth2 Debugger
Decode JWT ID Tokens, inspect claims, and validate token expiry for OpenID Connect flows.
Encryptor / Decryptor Toolkit
AES encrypt/decrypt with passwords, plus Base64, URL, and Hex encode/decode utilities.
JWT Decoder & Inspector
Paste any JWT to inspect its header, payload, and signature. Pretty-printed with expiry checks.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes in Base64 or Hex. Includes HMAC with a secret key.
Password Generator
Create strong passwords and Diceware-style passphrases with configurable length and entropy.
Certificate Decoder
Decode PEM certificates to extract Subject, Issuer, SANs, serial number, and validity dates.
JSON Formatter & Validator
Pretty-print, minify, validate, and explore JSON with a collapsible tree view.
Regex Tester
Test regular expressions with live match highlighting, capture groups, and common presets.
URL Parser & Builder
Parse URLs into components, edit query parameters, and rebuild URLs on the fly.
Webhook Tester
Send custom HTTP requests with any method, headers, and JSON body. Inspect responses and save request history.
API Playground
Interactive API explorer for NesqualTech endpoints. Test requests, view responses, and copy curl commands.
Diff Checker
Side-by-side diff viewer for text and JSON. Highlight additions and deletions line-by-line.
Base64 Image Encoder
Convert images to Base64 data URIs and decode them back. Drag-and-drop upload with file size comparison.
Cron Expression Parser
Parse cron expressions into human-readable schedules and preview the next execution times.
QR Code Generator
Generate QR codes from text or URLs. Customize size and colors, then download as a PNG image.
Color Palette Generator
Generate complementary, analogous, and triadic color palettes from a base hex color.