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.
148 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.