Toolbox - Lukas Wojcik

Authentication: Basic Auth + htpasswd Generator

Privacy Guarantee: No data entered here is stored on my server or transferred anywhere else. Everything...

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Backup Retention & Transfer Window Planner

Size a GFS backup scheme: how much target storage the retained copies occupy, and how long...

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Base64 Encode & Decode Tool

Lint Docker Compose configurations against edge server best practices including timezones and restart rules.

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BigQuery GA4 Query & UNNEST Builder

Generate optimized standard SQL for GA4 BigQuery exports with automatic UNNEST parameter logic.

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CCTV Lens, Field of View & Pixel Density Calculator

Turns sensor size, focal length and distance into field of view and pixels per metre, and says which DORI level a camera actually reaches.

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CCTV Storage & Network Bitrate Calculator

Calculate network bitrate (Mbps) and storage capacity (TB) for CCTV installations based on H.264/H.265 codec and motion retention.

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Code Beautifier – JavaScript, PHP, Python, SQL & More

Paste minified or messy JavaScript, PHP, Node.js, Python, SQL, Java, C/C++, C#, Go, Rust, TypeScript, HTML,...

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Code Minifier – JavaScript, PHP, Python, SQL & More

Paste JavaScript, PHP, Node.js, Python, SQL, Java, C/C++, C#, Go, Rust, TypeScript, HTML, CSS, JSON or...

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Consent Mode v2 Decoder

Paste the gcs parameter value (e.g., "g110") found in your GA4 network request. Decode Consent

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Crontab – Cronjob Builder & Explainer

Crontab - Cronjob Builder & Explainer Quick Presets Every Minute Every 5 Min Hourly Daily (Midnight)...

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CSP Header Generator & Tracking-Linter

Generate standard Content-Security-Policy (CSP) headers with preset permissions for GA4, GTM, Matomo, and Server-Side endpoints.

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DataLayer Inspector & Validator

Validate DataLayer

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DateConverter – Unix Epoch Timestamp & ISO

Bidirectional epoch timestamp and ISO 8601 date converter for server logs, BigQuery, and tracking APIs.

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E-Commerce Anomaly Threshold Planner

Turns an event volume into a usable alert threshold: how many false alarms a sigma rule produces per day, and the smallest drop it is able to see at all.

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Frigate & Coral TPU Capacity Planner

Adds up the detection load of every camera, compares it against what a Coral TPU delivers, and produces a matching frigate.yml skeleton.

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GA4 Anomaly Detector

Flatten nested dataLayer JSON structures into copy-ready dot-notation paths for Google Tag Manager variables.

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GA4 BigQuery Query Builder

Builds a query against the GA4 export schema with the correct UNNEST form per parameter, a date filter that actually prunes tables, and the traps that quietly change the result.

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GA4 Bot Detector

Decode cryptic GA4 gcd consent parameter strings into actionable storage states and update origins.

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GA4 Channel Grouping & Unassigned Debugger

Shows which default channel group GA4 assigns to a source, medium and campaign, which of the eighteen rules matched, and why a session ends up in Unassigned.

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GA4 E-Commerce Item Array Validator

Validate GA4 e-commerce item arrays against specification rules and inspect calculated monetary totals.

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GA4 Event Parameter Generator

Select Standard Event: view_item add_to_cart purchase begin_checkout view_item_list + Add Custom Parameter Generate Code

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GA4 gcd Parameter Decoder

Decode cryptic GA4 gcd consent parameter strings into actionable storage states and update origins.

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GA4 Measurement Protocol Payload Builder

Build and validate JSON payloads and cURL requests for GA4 Measurement Protocol server-side testing.

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GA4 Parameter Analyser

Breakdown Payload

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GA4 PII Checker

Normalize user contact data and simulate Event ID deduplication payloads for Meta and TikTok CAPI.

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GoogleAds – GAQL Query Explorer

GAQL Query Input: Format & Beautify Analyze Structure Clear Output & Analysis Report: // Ready. Enter...

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GTM Container History & Deep Search Engine

Calculate total power draw across PoE hardware and verify switch capacity saturation for UniFi deployments.

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GTM DataLayer Variable Path Flattener

Flatten nested dataLayer JSON structures into copy-ready dot-notation paths for Google Tag Manager variables.

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GTM Duplicates Analyser

Paste your Google Tag Manager JSON export below to instantly find redundant variables and triggers. The...

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GTM Naming Convention Auditer

Paste your GTM JSON export to audit tag and trigger naming conventions. Supported prefixes: [GA4], [FB],...

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IP Anonymization & Masking Tester

Shows what an IPv4 or IPv6 address looks like after truncation, how large the remaining group of addresses is, and whether a payload carries a private address instead of the visitor's.

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JSON Beautifier

Copy your unformatted JSON into this beautifier to get an instant highlighted and srructured code. Beautify...

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JSON-LD Structured Data Generator & Checker

Builds JSON-LD for Article, FAQPage, HowTo, Product, Organization and BreadcrumbList, and checks existing markup for the mistakes that quietly cost a rich result.

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JWT & OAuth Token Inspector

Decodes a JSON Web Token in the browser, works out how long it is still valid, lists its scopes and points out a missing signature, an endless lifetime or personal data in the payload.

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LLM / Ollama VRAM & Memory Requirement Estimator

Calculate GPU VRAM requirements and hardware recommendations for self-hosting local LLMs via Ollama, vLLM, or llama.cpp.

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LLM API Token & Cost Calculator

Works out what a language model costs per request, per month and at ten times the volume, splits input, cached input and output, and estimates tokens from a piece of text.

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Looker Studio Blend & Join Planner

Works out how many rows a blend produces and by which factor a metric of the left table is inflated before the numbers reach a chart.

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Matomo Tracking API & Custom Dimension Builder

Assembles a request to the Matomo HTTP Tracking API with page views, events, goals and custom dimensions, and points out the mistakes that make a hit disappear without an error.

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Meta & TikTok CAPI Dedup & Hash Generator

Normalize user contact data and simulate Event ID deduplication payloads for Meta and TikTok CAPI.

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Meta CAPI Match Key Planner & Hasher

Shows which customer parameters a Conversions API event carries, how far that gets the match, and what each value has to look like before it is hashed. Everything runs in the browser.

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mmWave Presence Zone Planner

Turns distance gates and per-gate sensitivity into the area a LD2410 or LD2450 actually watches - and shows where it reaches through the wall into the next room.

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Modbus & SunSpec Register Decoder

Modbus registers arrive as bare 16-bit words. Paste them here, choose the data type and the...

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MQTT Discovery Payload Builder for Home Assistant

Builds the discovery topic and the config payload for an MQTT entity, and catches the mismatches between device class, unit and state class that keep a sensor out of the energy dashboard.

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Multi-WAN Failover & Policy Planner

Works out how long a failover actually takes, how long a backup data cap lasts, and which policy routes are shadowed by the one above them.

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Pi-hole / AdGuard Blocklist Converter & Overlap Analyzer

Merge Pi-hole and AdGuard blocklists, convert them into the format your resolver expects, and see how...

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Prometheus Time Series Capacity Planner

Turns exporters and scrape interval into disk, memory and write load - including what a year of scraping does to the card a Raspberry Pi boots from.

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PV Surplus & Battery Charging Calculator

Splits the current surplus between battery and a switchable load, works out how long the battery needs, and derives the switching thresholds for a surplus automation.

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RAG Chunking & Embedding Planner

Turns a document set into chunk counts, embedding cost and vector storage, and shows how much of the context window the retrieved chunks take up.

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Raspberry Pi Docker Compose Edge Linter

Lint Docker Compose configurations against edge server best practices including timezones and restart rules.

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Raspberry Pi Power Draw & UPS Runtime Calculator

Pick a board, add whatever hangs off it, and this page works out the steady power...

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Regex Tester & Explainer

Runs a regular expression against a text, lists matches and groups, and explains the pattern piece by piece, including the constructs that make it slow.

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robots.txt & llms.txt Generator for AI Crawlers

Writes a robots.txt that separates search engines, AI training crawlers and AI assistants, plus an llms.txt skeleton, and explains what each block really achieves.

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RTSP Stream URL Builder & Vendor Reference

Generate standard RTSP/WebRTC stream URLs and Frigate NVR config blocks for Hikvision, Dahua, Reolink, Axis, and UniFi.

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Server-Side GTM – Cloud Run Cost Estimator

Estimate monthly Google Cloud Platform (GCP) Cloud Run infrastructure costs for Server-Side Google Tag Manager (sGTM).

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Set-Cookie Analyzer & ITP Lifetime Simulator

Reads a Set-Cookie header, checks the attributes browsers reject outright, and shows how long the cookie really survives in Safari, Chrome and Firefox.

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SQL Query Formatter & Parameter Binder

Clean, format, and bind SQL parameters (replacing ? and @param placeholders) for testing queries from application logs.

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TCF v2.2 Consent String Decoder

Decode an IAB TCF v2.2 consent string entirely in the browser: CMP, purposes, legitimate interest, vendors, publisher restrictions and the checks that TCF 2.2 made stricter.

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Text & Code Diff

Compares two versions line by line, marks what was added and removed, and can ignore whitespace, case and blank lines.

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Traefik Label & Compose Generator

Writes the Traefik labels for a container - router, service, TLS and middlewares - and names the pitfalls that leave a service unreachable or unprotected.

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UniFi / IoT VLAN Subnet & CIDR Calculator

Calculate usable IP host ranges, broadcast addresses, and VLAN segmentation layouts for home networking.

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UniFi PoE Power Budget & Load Calculator

Calculate total power draw across PoE hardware and verify switch capacity saturation for UniFi deployments.

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UniFi Zone Matrix Planner

Turns a set of network zones into a matrix of policies, derives the rule list from it, and points out the openings that undo the segmentation.

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URL Decode & Encode Tool

Encode and decode URLs and tracking parameter components instantly using client-side JavaScript.

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URL Pretty Print

Get a well formatted summary out of every URL.

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Usercentrics DataLayer Event Simulator

Simulate Usercentrics consent choices and inspect live dataLayer payloads and GTM tag firing logic.

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UTM Campaign Link Builder & Strict Linter

Generate GA4 tracking campaign URLs with live linting and strict enforcement of lowercase, URL encoding, and underscores.

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WireGuard AllowedIPs & Split-Tunnel Calculator

Every WireGuard peer answers one question: which destination addresses belong in the tunnel. Get AllowedIPs wrong...

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WordPress Dequeue Snippet Generator

List the handles you want gone, say where each one may stay, and get a ready...

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WordPress meta_query JOIN Analyzer

Counts the JOINs a meta_query produces, marks the clauses that cannot use an index, and generates a custom table with the matching query as the way out.

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WordPress REST Route & Permission Callback Generator

Describe the route once and get the whole scaffold back: the register_rest_route call, an argument schema...

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WP-CLI Database Cleanup Command Builder

Assembles the WP-CLI commands for a database cleanup, puts a counting command in front of every deletion and names what each step cannot bring back.

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Zigbee & Wi-Fi 2.4 GHz Channel Planner

Puts the sixteen Zigbee channels next to the Wi-Fi channels already in the air and shows which of them keeps the widest distance from the interference.

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