Guides
Step-by-step walkthroughs for getting the most out of every tool on DevHexLab. Each guide links directly to the tool so you can follow along.
199 guides
How to Format JSON
Step-by-step guide to formatting and beautifying JSON data using the DevHexLab JSON Formatter.
How to Decode a JWT Token
Learn how to inspect JWT tokens and understand their structure using the JWT Decoder.
How to Generate a UUID
Generate UUIDs in multiple formats and versions using the DevHexLab UUID Generator.
How to Check Color Contrast for Accessibility
Use the Contrast Checker to ensure your design meets WCAG accessibility standards.
How to Generate Secure Passwords
Create strong, random passwords with the DevHexLab Password Generator.
How to Document a Power Automate Flow with FlowDoc Pro
Generate professional documentation, diagrams, and runbooks for your Power Automate flows entirely in the browser — no data ever leaves your machine.
How to Map Power Automate Flow Dependencies with FlowLens
Create visual dependency maps for any Power Automate cloud flow — understand action connections, run-after conditions, and loops at a glance.
How to Safely Edit Power Automate Flow JSON with Flow Studio Pro
Edit Power Automate flow JSON with automatic backups, diffing, validation, and redaction — all from a focused browser side panel.
How to Write and Fix Power Automate Expressions with Expression Helper
Explain, lint, fix, search, and insert Power Automate expressions directly inside the cloud flow designer without switching tabs.
How to Diagnose Power Automate Errors with Error Explainer
Translate cryptic Power Automate cloud flow error codes into plain English and get actionable fixes — right inside the designer.
How to Preview HTML Emails in Power Automate with HTML Preview
Render and inspect your HTML email content directly in the Power Automate designer without copy-pasting into external tools.
How to URL Encode Text
Convert special characters in your URLs to safe percent encoded format using the DevHexLab URL Encoder.
How to URL Decode a String
Turn percent encoded URL strings back into readable text using the DevHexLab URL Decoder.
How to Validate JSON
Check if your JSON is correctly structured and find the exact line and column of any syntax errors.
How to Minify JSON
Strip whitespace and shrink JSON files for production use or smaller API payloads.
How to Generate MD5, SHA-1, SHA-256, and SHA-512 Hashes
Create cryptographic hashes for any text right in your browser, without sending anything to a server.
How to Pick a Color and Get HEX, RGB, and HSL Values
Visually pick any color and instantly get the values in every format used in web design and CSS.
How to Decode a Base64 String
Turn Base64 encoded text back into its original readable form using the DevHexLab Base64 Decoder.
How to Convert HEX Color to RGB
Turn HEX color codes into RGB and RGBA values for CSS, JavaScript, and design work.
How to Compare Two Pieces of Text
Find the exact differences between two text snippets, code blocks, or configuration files using the DevHexLab Text Diff tool.
How to Build a Cron Expression
Create scheduled task expressions for Linux cron, cloud functions, and CI pipelines without memorising the syntax.
How to Change the Case of Text
Convert text between camelCase, snake_case, PascalCase, kebab-case, UPPERCASE, lowercase, and more in one click.
How to Convert Time Between Timezones
Convert a date and time from one timezone to any other without doing math in your head.
How to HTML Encode Text
Convert special HTML characters into safe named entities so your content displays correctly inside an HTML page.
How to Convert RGB Color to HEX
Turn RGB or RGBA color values into HEX codes for CSS, design tools, and brand guidelines.
How to Count Words, Characters, and Sentences in Text
Get an instant count of words, characters with and without spaces, sentences, paragraphs, and estimated reading time for any text.
How to Convert CSV to JSON
Turn a CSV file from a spreadsheet, database export, or report into clean JSON that you can use in an API, a config file, or a script.
How to Build a Regex Pattern From a Description
Build regular expressions by describing what you want to match, instead of memorising obscure regex syntax.
How to Generate Lorem Ipsum Placeholder Text
Fill design mockups, page layouts, and content templates with believable placeholder text in seconds.
How to Convert JSON to XML
Step-by-step guide to transforming JSON data into XML markup using the DevHexLab JSON to XML tool.
How to Convert JSON to YAML
Step-by-step guide to turning a JSON document into a human-readable YAML file using the DevHexLab JSON to YAML converter.
How to Format and Clean CSV Data
Step-by-step guide to tidying up messy CSV files using the DevHexLab CSV Formatter.
How to Pretty Print JSON, XML, and YAML
Step-by-step guide to formatting any structured data into a readable, indented form using the DevHexLab Data Pretty Printer.
How to Convert Text to ASCII Codes
Step-by-step guide to getting the ASCII code for any character using the DevHexLab ASCII Converter.
How to Convert Text to Binary
Step-by-step guide to converting plain text into binary (0s and 1s) using the DevHexLab Binary Converter.
How to Convert Text to Unicode
Step-by-step guide to finding Unicode code points for any character using the DevHexLab Unicode Converter.
How to Calculate the Difference Between Two Dates
Step-by-step guide to finding exactly how many days, weeks, months, or years are between two dates using the DevHexLab Date Difference tool.
How to Read and Understand a Cron Expression
Step-by-step guide to decoding any cron schedule into plain English using the DevHexLab Cron Reader tool.
How to Format Dates in ISO 8601 Format
Step-by-step guide to converting dates to and from the ISO 8601 standard using the DevHexLab ISO Date Formatter.
How to Calculate Time Durations
Step-by-step guide to adding up hours, minutes, and seconds using the DevHexLab Duration Calculator.
How to Create a Countdown Timer
Step-by-step guide to generating a countdown to any future date using the DevHexLab Countdown Generator.
How to Generate a CSS Color Gradient
Step-by-step guide to creating linear and radial gradients visually and copying the CSS using the DevHexLab Gradient Generator.
How to Generate a Color Palette
Step-by-step guide to creating harmonious color palettes for design projects using the DevHexLab Palette Generator.
How to Generate a CSS Box Shadow
Step-by-step guide to creating box shadow effects visually and copying the CSS using the DevHexLab Shadow Generator.
How to Compare Two Code Files
Step-by-step guide to spotting differences between two versions of a code file using the DevHexLab Code Diff tool.
How to Remove Duplicate Lines from Text
Step-by-step guide to eliminating repeated lines from a list or text block using the DevHexLab Remove Duplicates tool.
How to Clean and Sanitize Text
Step-by-step guide to stripping unwanted characters, extra spaces, and formatting from text using the DevHexLab Text Cleaner.
How to Format and Beautify Code
Step-by-step guide to auto-formatting messy code into a consistent, readable style using the DevHexLab Code Formatter.
How to Minify Code for Production
Step-by-step guide to removing whitespace and comments from code to reduce file size using the DevHexLab Code Minifier.
How to Verify a File or Text Hash
Step-by-step guide to checking that a hash matches the expected value using the DevHexLab Hash Checker.
How to Generate a Secure Random Token
Step-by-step guide to creating cryptographically random tokens for API keys, session IDs, and secrets using the DevHexLab Random Token tool.
How to Generate a JWT Token
Step-by-step guide to creating a signed JSON Web Token using the DevHexLab JWT Generator.
How to Hash a Password with Bcrypt
Step-by-step guide to generating and verifying bcrypt password hashes using the DevHexLab Bcrypt Generator.
How to Generate TOTP Codes
Step-by-step guide to generating time-based one-time passwords for testing two-factor authentication using the DevHexLab TOTP Generator.
How to Generate an RSA Key Pair
Step-by-step guide to creating a public and private RSA key pair for encryption and signing using the DevHexLab RSA Key Generator.
How to Generate a GUID
Step-by-step guide to generating globally unique identifiers in the format used by Microsoft systems using the DevHexLab GUID Generator.
How to Test an API Endpoint
Step-by-step guide to sending HTTP requests and inspecting responses using the DevHexLab API Tester.
How to View HTTP Headers
Step-by-step guide to inspecting the HTTP headers sent by any URL using the DevHexLab HTTP Header Viewer.
How to Look Up an IP Address
Step-by-step guide to finding geolocation and ISP information for any IP address using the DevHexLab IP Lookup tool.
How to Parse a User Agent String
Step-by-step guide to extracting browser, OS, and device information from a User-Agent header using the DevHexLab User Agent Parser.
How to Look Up DNS Records
Step-by-step guide to querying A, AAAA, MX, TXT, CNAME, and other DNS record types using the DevHexLab DNS Lookup tool.
How to Check If a Port Is Open
Step-by-step guide to testing TCP port connectivity for any host using the DevHexLab Port Checker tool.
How to Read and Decode a QR Code
Step-by-step guide to extracting the content from a QR code image using the DevHexLab QR Reader tool.
How to Generate Mock Data
Step-by-step guide to creating realistic test data for development and testing using the DevHexLab Mock Data Generator.
How to Format SQL Queries
Step-by-step guide to cleaning up messy SQL into readable, consistently indented queries using the DevHexLab SQL Formatter.
How to Format and Validate XML
Step-by-step guide to pretty-printing and validating XML documents using the DevHexLab XML Formatter.
How to Generate a JSON Schema
Step-by-step guide to automatically creating a JSON Schema from an existing JSON document using the DevHexLab JSON Schema Generator.
How to Parse Environment Variables
Step-by-step guide to reading and validating .env file contents using the DevHexLab Env Parser.
How to Calculate Aspect Ratios
Step-by-step guide to finding the exact aspect ratio of any image or video dimensions using the DevHexLab Aspect Ratio Calculator.
How to Design Adaptive Cards
Step-by-step guide to building and previewing Microsoft Adaptive Cards using the DevHexLab Adaptive Cards Designer.
How to Build FetchXML Queries
Step-by-step guide to constructing FetchXML queries for Dataverse and Dynamics 365 using the DevHexLab FetchXML Builder.
How to Convert Image Formats Online
Step-by-step guide to converting between JPEG, PNG, WebP, GIF, and other formats using the DevHexLab Image Converter.
How to Convert HEIC Photos to JPG
Step-by-step guide to converting iPhone HEIC or HEIF photos to universally compatible JPG or PNG files using the DevHexLab HEIC Converter.
How to Convert Images to PDF
Step-by-step guide to combining one or more images into a PDF document using the DevHexLab Image to PDF tool.
How to Convert HTML to an Image
Step-by-step guide to rendering HTML and CSS as a PNG or JPEG image using the DevHexLab HTML to Image tool.
How to Optimize SVG Files
Step-by-step guide to removing unnecessary code from SVG files to reduce their size using the DevHexLab SVG Optimizer.
How to Convert an Image to Base64
Step-by-step guide to encoding an image as a Base64 string for use in CSS, HTML, or API payloads using the DevHexLab Image to Base64 tool.
How to Convert Base64 Back to an Image
Step-by-step guide to decoding a Base64 string into a downloadable image file using the DevHexLab Base64 to Image tool.
How to Resize Images Online
Step-by-step guide to scaling images to exact pixel dimensions or a percentage using the DevHexLab Image Resizer.
How to Generate a Favicon
Step-by-step guide to creating favicon files in all required sizes from a single image using the DevHexLab Favicon Generator.
How to Preview an Open Graph Image
Step-by-step guide to checking how a URL's Open Graph image and meta tags will appear when shared on social media using the DevHexLab OG Image Previewer.
How to Encode Text to Base64
Step-by-step guide to converting any text or binary data into Base64 encoding using the DevHexLab Base64 Encode tool.
How to Use the Online HTML Editor
Step-by-step guide to writing, editing, and previewing HTML, CSS, and JavaScript in a browser-based editor using DevHexLab.
How to Generate a QR Code
Step-by-step guide to creating a QR code for any URL, text, or contact information using the DevHexLab QR Generator.
How to Test a Regular Expression
Step-by-step guide to writing, testing, and debugging regular expressions using the DevHexLab Regex Tester.
How to Convert Unix Timestamps
Step-by-step guide to converting Unix timestamps to readable dates and vice versa using the DevHexLab Timestamp Converter.
How to Decode HTML Entities
Step-by-step guide to converting HTML entities like & and < back into readable text using the DevHexLab HTML Decode tool.
How to Convert JSON to CSV
Step-by-step guide to transforming a JSON array into a comma-separated values file using the DevHexLab JSON to CSV tool.
How to Convert YAML to JSON
Step-by-step guide to turning a YAML configuration file into valid JSON using the DevHexLab YAML to JSON converter.
How to Convert Markdown to HTML
Step-by-step guide to turning plain Markdown text into clean HTML markup using the DevHexLab Markdown to HTML tool.
How to Compress Images Online
Step-by-step guide to reducing image file sizes for faster web pages using the DevHexLab Image Compressor tool.
How to Check Password Strength
Step-by-step guide to evaluating how secure a password is and learning how to improve it using the DevHexLab Password Strength tool.
How to Create a CSS Gradient
Step-by-step guide to building linear and radial CSS gradients visually using the DevHexLab CSS Gradient Generator.
How to Generate a CSS Box Shadow
Step-by-step guide to building multi-layer box shadows visually using the DevHexLab Box Shadow Generator.
How to Generate CSS Border Radius
Step-by-step guide to creating custom border-radius values visually using the DevHexLab Border Radius Generator.
How to Experiment with CSS Flexbox
Step-by-step guide to understanding flexbox properties interactively using the DevHexLab Flexbox Playground.
How to Generate a CSS Grid Layout
Step-by-step guide to building grid-template columns and rows visually using the DevHexLab CSS Grid Generator.
How to Convert Tailwind Classes to CSS
Step-by-step guide to seeing the raw CSS that Tailwind utility classes produce using the DevHexLab Tailwind Class Converter.
How to Minify CSS
Step-by-step guide to removing whitespace and comments from CSS to reduce file size using the DevHexLab CSS Minifier.
How to Format and Beautify CSS
Step-by-step guide to auto-formatting compressed or messy CSS into a clean, readable style using the DevHexLab CSS Formatter.
How to Generate a CSS Clip Path
Step-by-step guide to building polygon, circle, and ellipse clip-path shapes visually using the DevHexLab Clip Path Generator.
How to Minify JavaScript
Step-by-step guide to compressing JavaScript files for production using the DevHexLab JS Minifier.
How to Format and Beautify JavaScript
Step-by-step guide to auto-formatting minified or messy JavaScript into readable code using the DevHexLab JS Formatter.
How to Convert JSON to TypeScript Interfaces
Step-by-step guide to generating TypeScript type definitions from a JSON sample using the DevHexLab JSON to TypeScript tool.
How to Convert JSON to a Zod Schema
Step-by-step guide to generating runtime-validated Zod schemas from JSON samples using the DevHexLab JSON to Zod tool.
How to Convert JSON to Go Structs
Step-by-step guide to generating Go struct definitions from a JSON sample using the DevHexLab JSON to Go tool.
How to Preview Markdown in Real Time
Step-by-step guide to writing and previewing Markdown content side by side using the DevHexLab Markdown Previewer.
How to Convert HTML to Markdown
Step-by-step guide to turning HTML markup into clean Markdown text using the DevHexLab HTML to Markdown tool.
How to Test CORS Configuration
Step-by-step guide to checking whether an API endpoint is configured to allow cross-origin requests using the DevHexLab CORS Tester.
How to Use the HTTP Status Code Reference
Step-by-step guide to looking up the meaning of any HTTP status code using the DevHexLab HTTP Status Reference tool.
How to Test and Debug Webhooks
Step-by-step guide to receiving and inspecting webhook payloads using the DevHexLab Webhook Tester.
How to Build a Cron Expression
Step-by-step guide to constructing a valid cron schedule using the DevHexLab Cron Builder.
How to Explore a GraphQL API
Step-by-step guide to querying a GraphQL endpoint and exploring its schema using the DevHexLab GraphQL Explorer.
How to Check an SSL Certificate
Step-by-step guide to inspecting a website's SSL/TLS certificate expiry and configuration using the DevHexLab SSL Checker.
How to Convert Between Number Bases
Step-by-step guide to converting decimal, binary, octal, and hexadecimal numbers using the DevHexLab Number Base Converter.
How to Convert Roman Numerals
Step-by-step guide to converting between Roman numerals and decimal numbers using the DevHexLab Roman Numeral Converter.
How to Convert Between Temperature Units
Step-by-step guide to converting Celsius, Fahrenheit, and Kelvin using the DevHexLab Temperature Converter.
How to Convert Units of Measurement
Step-by-step guide to converting length, weight, area, volume, and other physical units using the DevHexLab Unit Converter.
How to Format Numbers as Currency
Step-by-step guide to displaying numbers in currency format with correct symbols and separators using the DevHexLab Currency Formatter.
How to Convert Between Byte Units
Step-by-step guide to converting bytes, kilobytes, megabytes, gigabytes, and terabytes using the DevHexLab Bytes Converter.
How to Generate a URL Slug
Step-by-step guide to converting a title or phrase into a clean, URL-friendly slug using the DevHexLab Slug Generator.
How to Convert Text to Morse Code
Step-by-step guide to encoding and decoding Morse code using the DevHexLab Text to Morse tool.
How to Check If a Word Is a Palindrome
Step-by-step guide to checking whether text reads the same forwards and backwards using the DevHexLab Palindrome Checker.
How to Escape Special Characters in Strings
Step-by-step guide to escaping and unescaping special characters for JSON, JavaScript, HTML, SQL, and regex using the DevHexLab String Escaper.
How to Convert a PDF to Images
Step-by-step guide to extracting each page of a PDF as a separate image file using the DevHexLab PDF to Images tool.
How to Extract Text from a PDF
Step-by-step guide to copying all readable text out of a PDF document using the DevHexLab PDF to Text tool.
How to Convert HTML to PDF
Step-by-step guide to generating a PDF document from HTML and CSS using the DevHexLab HTML to PDF tool.
How to Merge PDF Files
Step-by-step guide to combining multiple PDF documents into a single file using the DevHexLab Merge PDF tool.
How to Convert Word Documents to HTML
Step-by-step guide to extracting HTML markup from a .docx file using the DevHexLab Word to HTML tool.
How to Convert Word Documents to Plain Text
Step-by-step guide to stripping all formatting from a .docx file and extracting plain text using the DevHexLab Word to Text tool.
How to Convert HTML to a Word Document
Step-by-step guide to turning HTML content into a downloadable .docx file using the DevHexLab HTML to Word tool.
How to Convert Markdown to a Word Document
Step-by-step guide to turning a Markdown file into a downloadable .docx using the DevHexLab Markdown to Word tool.
How to Convert Word Documents to PDF
Step-by-step guide to creating a PDF from a .docx file using the DevHexLab Word to PDF tool.
How to Convert PDF to a Word Document
Step-by-step guide to extracting content from a PDF and converting it to an editable .docx using the DevHexLab PDF to Word tool.
How to Convert PDF to HTML
Step-by-step guide to turning a PDF document into HTML markup using the DevHexLab PDF to HTML tool.
How to Convert Markdown to PDF
Step-by-step guide to rendering a Markdown document as a downloadable PDF using the DevHexLab Markdown to PDF tool.
How to Use the HTTP Headers Reference
Step-by-step guide to looking up any HTTP request or response header using the DevHexLab HTTP Headers Reference.
How to Use the HTML Entities Reference
Step-by-step guide to finding the entity code for any HTML special character using the DevHexLab HTML Entities Reference.
How to Use the ASCII Table
Step-by-step guide to finding ASCII codes for any character using the DevHexLab ASCII Table reference.
How to Find the Right MIME Type
Step-by-step guide to looking up the correct MIME type for any file extension using the DevHexLab MIME Types Reference.
How to Use the Regex Cheat Sheet
Step-by-step guide to finding the right regular expression syntax for any matching task using the DevHexLab Regex Cheat Sheet.
How to Use the Git Cheat Sheet
Step-by-step guide to finding the right Git command for any situation using the DevHexLab Git Cheat Sheet.
How to Use the SQL Reference
Step-by-step guide to looking up SQL syntax for SELECT, JOIN, aggregate functions, and more using the DevHexLab SQL Reference.
How to Use the Color Names Reference
Step-by-step guide to finding hex, RGB, and HSL values for any named CSS color using the DevHexLab Color Names Reference.
How to Parse a URL into Its Components
Step-by-step guide to breaking down any URL into protocol, hostname, port, pathname, query parameters, and hash using the DevHexLab URL Parser.
How to Convert a cURL Command to Code
Step-by-step guide to turning a cURL command into JavaScript fetch, Axios, Python requests, or PHP code using the DevHexLab cURL to Code converter.
How to Generate a .gitignore File
Step-by-step guide to creating a complete .gitignore for any stack by selecting languages, frameworks, and editors in the DevHexLab .gitignore Generator.
How to Generate HTML Meta Tags for SEO and Social Sharing
Step-by-step guide to creating title, description, Open Graph, and Twitter Card meta tags using the DevHexLab Meta Tag Generator.
How to Compare Two JSON Objects with JSON Diff
Step-by-step guide to spotting added, removed, and changed keys between two JSON documents using the DevHexLab JSON Diff tool.
How to Test JSONPath Expressions
Step-by-step guide to writing and testing JSONPath queries against real JSON data using the DevHexLab JSONPath Tester.
How to Convert Between HEX, RGB, HSL, and Other Color Formats
Step-by-step guide to converting any color between HEX, RGB, RGBA, HSL, HSV, CMYK, and CSS formats using the DevHexLab Color Format Converter.
How to Count Tokens for LLM API Cost Estimation
Step-by-step guide to counting tokens in your prompts for GPT-4, Claude, Llama, and Gemini using the DevHexLab Token Counter.
How to Generate an SSH Key Pair in the Browser
Step-by-step guide to generating a secure ECDSA or RSA key pair entirely in your browser using the DevHexLab SSH Key Generator.
How to Generate a Professional GitHub README
Step-by-step guide to building a complete GitHub README.md with badges, features, installation steps, and more using the DevHexLab README Generator.
How to Generate an Nginx Server Block Configuration
Step-by-step guide to generating an nginx config for a static site, Node.js app, or reverse proxy with SSL using the DevHexLab Nginx Config Generator.
How to Generate Apache .htaccess Rules
Step-by-step guide to creating .htaccess rules for HTTPS redirects, caching, security headers, and custom error pages using the DevHexLab .htaccess Generator.
How to Validate a docker-compose.yml File
Step-by-step guide to checking your docker-compose.yml for syntax errors, port conflicts, and missing configuration using the DevHexLab Docker Compose Validator.
How to Generate CSS Keyframe Animations
Step-by-step guide to building CSS animations visually — choosing presets, adjusting timing and duration, and copying the finished CSS using the DevHexLab CSS Animation Generator.
How to Create a Glassmorphism CSS Effect
Step-by-step guide to generating glassmorphism CSS with live preview — adjusting blur, opacity, saturation, and border radius using the DevHexLab Glassmorphism Generator.
How to Generate a Markdown Table
Step-by-step guide to building Markdown tables visually — editing cells, setting alignment, and importing CSV data using the DevHexLab Markdown Table Generator.
How to Monitor Power Automate Flow Health with MakerOps Radar
Step-by-step guide to tracking Power Automate flow run history, error trends, and connection status using the MakerOps Radar browser extension.
How to Build Structured LLM Prompts
Learn how to use the Prompt Builder to craft well-structured prompts for any LLM API call.
How to Compare LLM Models Side by Side
Use the AI Model Comparator to evaluate context windows, pricing, and capabilities across major LLM providers.
How to Compare Two Prompt Versions
Use the Prompt Diff tool to see exactly what changed between two versions of an LLM prompt.
How to Build a Content Security Policy Header
Step-by-step guide to constructing a Content-Security-Policy header using the CSP Builder tool.
How to Decode an SSL/TLS Certificate
Learn how to read and verify the contents of a PEM-encoded SSL/TLS certificate using the Certificate Decoder.
How to Check and Improve Password Strength
Use the Password Strength Checker to evaluate a password's entropy and get actionable improvement suggestions.
How to Convert Between Units of Measurement
Use the Unit Converter to instantly switch between metric, imperial, and digital units across eight categories.
How to Calculate the Difference Between Two Dates
Use the Date Difference Calculator to find the exact gap between any two dates, including business days.
How to Use the Three Percentage Calculators
Learn how to use each of the three percentage calculator cards to answer the most common percentage questions.
How to Convert SQL Queries to MongoDB Filters
Use the SQL to MongoDB converter to translate WHERE clauses and queries into MongoDB filter objects.
How to Visualize a Database Schema
Use the DB Schema Visualizer to turn CREATE TABLE statements into a visual table diagram with relationship indicators.
How to Generate SQL INSERT Statements from JSON
Use the JSON to SQL tool to convert a JSON array into ready-to-run INSERT statements for any SQL dialect.
How to Generate a Favicon for Your Website
Use the Favicon Generator to create browser and PWA icons from text initials or an uploaded image.
How to Generate a CSS Typography Scale
Use the Typography Scale tool to create a harmonious modular type scale and export it as CSS custom properties.
How to Calculate and Compare CSS Specificity
Use the CSS Specificity Calculator to find and compare selector weights so you can debug cascade conflicts.
How to Validate a GitHub Actions Workflow
Use the GitHub Actions Validator to catch structural errors and common mistakes in your workflow YAML before pushing.
How to Lint a Kubernetes Manifest
Use the Kubernetes Linter to validate manifest YAML for required fields and best-practice warnings before deploying.
How to Generate a Makefile for Your Project
Use the Makefile Generator to create a ready-to-use Makefile with standard targets for your project type.
How to Create Architecture Diagrams with DevHexDraw
Learn how to draw architecture diagrams, flowcharts, and system sketches using DevHexDraw — a free browser-based diagram editor with a hand-drawn style.
How to Validate JSON Against a Schema
Step-by-step guide to writing a JSON Schema and validating your JSON documents to catch data errors before they reach production.
How to Explore an OpenAPI Specification
Use the OpenAPI Viewer to navigate API endpoints, understand request and response schemas, and read authentication requirements — all in your browser.
How to Generate a TypeScript API Client from OpenAPI
Generate a fully typed TypeScript client from your OpenAPI spec and use it in your project — no more hand-written fetch boilerplate.
How to Verify a JWT Signature
Step-by-step guide to verifying JWT signatures using HMAC secrets or RSA/EC public keys — and understanding what the claims tell you.
How to Inspect an SSL/TLS Certificate Chain
Use the Certificate Chain Viewer to decode PEM certificates, read expiry dates and SANs, and diagnose common chain issues.
How to Build and Format an HTTP Request
Use the HTTP Request Builder to construct any REST API request visually and get the equivalent curl command to run or share.
How to Analyze a HAR File to Debug Network Issues
Export a HAR file from browser DevTools and use the HAR Viewer to find slow requests, failed API calls, and network bottlenecks.
How to Format and Read Structured Logs
Use the Log Formatter to turn raw JSON logs and other structured log formats into readable, searchable output.
How to Beautify a Minified Stack Trace
Map a cryptic production stack trace back to readable source file names and line numbers using source maps and the Stack Trace Beautifier.
How to Compare .env Files to Find Missing Variables
Use the .env Diff tool to compare environment variable files between environments and catch missing or mismatched configuration before deploying.
How to Lint a Dockerfile for Best Practices
Use the Dockerfile Linter to find common mistakes — unpinned base images, running as root, missing cache cleanup, and poor layer ordering.
How to Validate Kubernetes YAML Manifests
Validate your Kubernetes manifests against the official API schema to catch field errors, wrong API versions, and structural mistakes before deploying.
How to Understand and Explain a Complex SQL Query
Use the SQL Query Explainer to break down complex SQL queries — joins, CTEs, window functions, subqueries — into plain-English explanations.
How to Test and Preview HTML Email Templates
Use the HTML Email Tester to preview your email template, catch compatibility issues, and ensure it renders correctly across email clients.
How to Audit a Web Page for Accessibility Issues
Generate and run accessibility audit snippets in your browser console to find missing alt text, focus issues, contrast problems, and ARIA errors.
How to Build OData Filter Expressions for Power Platform
Use the OData Filter Builder to construct filter queries for Dataverse, SharePoint, and other OData APIs in Power Automate and Power Apps.
How to Find and Use the Right Power Platform Connector
Navigate the Power Platform connector ecosystem to find the right connector for your integration, understand its actions and triggers, and set up a connection.
How to Create a Mind Map
Learn how to build, organize, and export visual mind maps for brainstorming, planning, and note-taking using the DevHexLab Mind Map tool.
How to Use the Dev Task List
Learn how to create, organise, complete, and export developer tasks with categories, priorities, subtasks, and drag-and-drop reordering using the DevHexLab Dev Task List tool.