Gratis browsertools

MX-recordvalidator

Geldige MX-records controleren

SPF/DKIM/DMARC-parser

E-mailauthenticatierecords parseren

SPF-recordbouwer

SPF-records opbouwen en DNS-lookups tellen

DMARC-recordbouwer

DMARC-beleid en rapportagerecords genereren

E-mailheader-analyse

Bezorgstappen en authenticatieresultaten volgen

Wegwerpe-maildetectie

Controleren tegen bekende wegwerpdomeinen

E-mailopschoner

E-mails in bulk opschonen, valideren en dedupliceren

security.txt-auditor

security.txt valideren volgens RFC 9116

Wachtwoordlekcontrole

Wachtwoorden controleren tegen HIBP met k-anonimiteit

CSP- & beveiligingsheadergenerator

Content-Security-Policy en headersets samenstellen

WordPress-saltgenerator

wp-config-sleutels en -salts genereren

WordPress-hardeninggenerator

wp-config.php- en .htaccess-fragmenten

chmod-rechtencalculator

Octale modi en rwx-rechten converteren

JWT-decoder

JWT-headers, claims en verloop decoderen

Hashgenerator

MD5-, SHA-1-, SHA-256- en SHA-512-digests

llm.txt-compliancecontrole

Instructies voor AI-scrapers valideren

robots.txt-regelparser

URL-toegangsregels testen voor elke user-agent

Sitemap-XML-visualisatie

Sitemaps parseren, filteren, zoeken, CSV exporteren

Metatag-analyse

Analyseer titel, meta en OpenGraph-tags

SERP-voorbeeldgenerator

Google-zoekresultaten bekijken op desktop + mobiel

Socialcard-voorbeeld

OG-kaartvoorbeelden en een afbeeldingsgenerator van 1200x630

Schema-markupgenerator

JSON-LD-gestructureerde data opbouwen en valideren

robots.txt- & llms.txt-generator

robots-, llms- en security-bestanden genereren

CIDR- & subnetcalculator

IPv4- en IPv6-netwerkbereiken en -maskers

HTTP-statuscodeverkenner

Interactieve referentie voor 40+ statuscodes

Portscanner in de browser

Open poorten op localhost detecteren

Tester voor browsernetwerkmogelijkheden

Onlinestatus, verbindingstype, schatting downloadsnelheid

Afbeeldingsclassificatie in de browser

MobileNet v2-classificatie, geen upload

Embeddings-zoekopdracht in de browser

Semantisch zoeken met Transformers.js

LLM-runner in de browser

DistilGPT-2-tekstgeneratie lokaal uitvoeren

OCR in de browser

Tekst uit afbeeldingen extraheren met Tesseract.js

Achtergrond verwijderen

Achtergronden van foto's verwijderen met segmentatie op het apparaat

Afbeeldingen opschalen

Afbeeldingen 2x of 3x vergroten met verscherping

Spraak naar tekst

Audio lokaal transcriberen met Whisper tiny

Scope-inschatting

Bepaal uw beheerbehoefte in 30 seconden

Wachtwoordgenerator

Sterke wachtwoorden, lokaal gegenereerd

Afbeeldingen converteren & comprimeren

Formaat wijzigen en converteren naar WebP, AVIF of JPEG

Base64-, URL- & HTML-encoder

Tekst lokaal coderen en decoderen

Crontab-generator & uitleg

Cronschema's opbouwen en ontcijferen

Ping & Latency Visualizer

Graph live latency and network stability in your browser.

Subnet & CIDR Calculator

Compute network, broadcast, range and host count for any IPv4 CIDR.

HAR (HTTP Archive) Viewer

Parse .har files locally to inspect load times and payloads.

Client-Side Password Vault & Generator

Generate strong passwords and encrypt a credential list locally with a master password.

SSL/TLS Certificate Decoder

Decode a PEM certificate to inspect its size and SHA-256 fingerprint.

Keyword Density & Content Analyzer

Count words, reading time and top keyword phrases.

Structured Data (Schema.org) Validator

Validate JSON-LD schema syntax locally.

Redirect / Regex Path Mapper

Test URL rewrite rules and regex mappings in real time.

Log Parser & Anonymizer

Parse server logs, filter by level, anonymize IPs/emails.

CSV to JSON/XML Converter

Parse CSV and export JSON, XML or SQL inserts.

Base64 Image Encoder/Decoder

Convert images to Base64 data URIs and back.

WordPress Security Hardening Auditor

Audit a wp-config.php for security settings.

WordPress-saltgenerator

Generate wp-config.php authentication keys and salts.

WP REST API Explorer

Probe a WordPress site's public REST endpoints.

WordPress Version & Theme Finder

Extract WordPress version, theme and plugins from pasted HTML.

Node.js

package.json Security Auditor

Audit a package.json for risky or outdated dependencies.

Node.js

.env Security Validator

Validate .env files for placeholder secrets and missing values.

Node.js

Express.js Route Mapper

Parse Express routing code into a visual endpoint map.

Content Security Policy (CSP) Builder

Build and evaluate a CSP header interactively.

CORS Preflight Simulation Sandbox

Simulate CORS preflight requests and headers.

Local/Session Storage & Cookie Inspector

Inspect everything stored in your browser for this origin.

Framework Bundle Budget Calculator

Estimate load times from bundle sizes across network speeds.

Frontend

Next.js Routing Matrix Parser

Visualize a Next.js app/pages folder tree as routes.

Unix Timestamp & Epoch Converter

Convert between Unix timestamps and human dates.

UUID / ULID Bulk Generator

Generate thousands of UUIDs or ULIDs locally.

Accessibility

Color Contrast Auditor (WCAG)

Test WCAG 2.1 contrast ratios.

Diff Checker & Text Merge

Compare two text blocks line by line.

Base Converter (Binary/Octal/Decimal/Hex/Base64)

Convert numbers between bases.

Cron Expression Explainer

Explain a crontab expression in plain English.

Web Crypto Key Pair Generator

Generate RSA or ECDSA key pairs and export JWK/PEM locally.

Bcrypt / Argon2 Playground

Hash passwords with bcrypt or Argon2id via WebAssembly.

BIP39 Mnemonic Converter

Generate seed phrases and derive BTC/ETH keys offline.

Steganography Encoder / Decoder

Hide and extract text in PNG pixel data locally.

Regex Visualizer & Match Tester

Highlight matches, capture groups, timings and substitutions.

JSON Schema Generator & Validator

Infer JSON Schema from data and validate documents.

SQL Formatter & Syntax Checker

Format SQL with keywords, indentation and balance checks.

Markdown to Live HTML Converter

Render markdown with code, tables and task lists live.

JWT Signature Verifier

Verify RS/PS/ES/HS JWT signatures with a public key locally.

GraphQL Schema Introspector

Parse SDL, browse types and generate query skeletons.

DNS Propagation Emulator

Simulate resolver caches and TTL countdown over 24 hours.

HTTP Header Builder & Auditor

Build raw requests, parse responses, audit security headers.

WebRTC Signaling Playground

Copy-paste SDP to open a direct data channel between tabs.

WebSocket Tester & Frame Logger

Connect to ws/wss endpoints, log frames and measure latency.

Core Web Vitals Predictor

Rate TTFB, LCP, CLS and INP against Google thresholds.

Image Compression Previewer

Compare original vs compressed size and quality side by side.

CSS Selector Performance Analyzer

Rank CSS selectors by rendering cost and flag risky rules.