Developer Workflow Guides
Step-by-step guides for common developer tasks. Each guide includes an embedded tool demo — try it without leaving the page.
Debug JWT Tokens in 30 Seconds
Learn how to decode and debug JWT tokens instantly. Inspect header, payload, and expiration without writing any code.
Embed Images Inline with Base64 Encoding
Convert images to Base64 data URIs to embed them directly in HTML, CSS, or JSON — no server requests needed.
Export JSON to CSV for Spreadsheets and APIs
Convert JSON arrays from API responses into CSV format for Excel, Google Sheets, or data pipelines. Free, instant, browser-based.
Format Messy JSON from API Responses
Instantly pretty-print and validate JSON from API responses. Fix formatting, spot errors, and navigate complex structures.
Minify CSS Before Production Deployment
Remove whitespace and comments from your CSS to reduce file size before deploying. Improve page load speed with one click.
Encode Secrets in Base64 for Config Files
Encode API keys, connection strings, and credentials in Base64 for Kubernetes secrets, Docker configs, and environment files.
Compare JSON Objects and Find Differences
Compare two versions of a config file, JSON response, or code snippet to find exactly what changed. Visual diff with line-by-line highlighting.
Convert Colors Between HEX, RGB, HSL Formats
Convert color values between HEX, RGB, RGBA, and HSL formats. Essential for CSS, design handoffs, and cross-tool consistency.
Escape HTML Special Characters for Safe Web Output
Encode HTML entities to safely display user-generated content, prevent XSS attacks, and ensure correct rendering of special characters.
API Auth Debugging: JWT → JSON → Hash
Debug API authentication failures step by step: decode the JWT token, format the JSON payload, then verify credential hashes. A complete workflow for API developers.
Debug URL Parameters: Encode → Test Regex → Format JSON
Fix broken URLs and query strings: URL-encode special characters, test parameter patterns with regex, then format the JSON response. Essential workflow for API and frontend developers.
Export API Data: Format JSON → Convert to CSV → Diff Changes
Transform raw API JSON data into stakeholder-ready spreadsheets. Format the data, convert to CSV, then diff versions to track changes. A complete data export pipeline.
Validate and Clean Data: Regex → Format JSON → Convert Case
Build a data validation pipeline: test field patterns with regex, format the validated JSON, and normalize text casing. Catch dirty data before it reaches your database.
Secure Config: Generate Passwords → Hash → Encode Base64
Build a secure configuration workflow: generate strong passwords, hash them for storage, then Base64-encode secrets for environment variables. Never store plaintext credentials again.
Manage API Tokens: Decode JWT → Verify Hash → Encode Secrets
Full API token management workflow: inspect JWTs for claim issues, verify token hashes against stored values, and encode new secrets safely for deployment.
Build HTML Emails: Embed Images → Encode HTML → Minify CSS
Complete HTML email development workflow: convert images to Base64 for inline embedding, escape HTML special characters, and minify CSS for email client compatibility.
Optimize Web Assets: Image Base64 → Encode → URL-Safe
Prepare web assets for optimal delivery: convert images to Base64 data URIs, encode binary data for text transport, and URL-encode paths for safe API transmission.
CSS Themes: Convert Colors → Minify CSS → Diff Versions
Build consistent CSS color themes: convert design-tool colors between formats, minify for production, and diff versions to audit changes. A complete frontend styling workflow.
Write Docs: Markdown Preview → Word Count → Diff Versions
Complete technical documentation workflow: write and preview Markdown, check length targets with word counter, then diff versions before publishing. For devs writing READMEs, API docs, and guides.
Prepare Content: Convert Case → Encode HTML → Encode URL
Normalize content for web publishing: convert text case for headings and slugs, escape HTML entities for safe rendering, and URL-encode strings for links and APIs.
Design ID Systems: Generate UUIDs → Hash → Format as JSON
Design a UUID-based entity ID system: generate bulk UUIDs, hash them for indexed lookup, and format the ID schema as JSON for team documentation.
Debug Logs: Convert Timestamps → Format JSON → Diff Log Versions
Systematic log debugging: convert Unix timestamps to readable dates, format structured JSON logs, and diff log snapshots to find what changed. Cut debugging time in half.
Pre-Deploy Security: Hash Assets → Encode Config → Rotate Passwords
Security checklist before every deployment: hash static assets for integrity verification, encode configuration secrets for safe storage, and generate fresh credentials. Ship securely every time.
Test API Contracts: Format JSON → Diff Responses → Validate Regex
Verify API contracts haven't broken: format response JSON for readability, diff expected vs actual responses, and validate field formats with regex. Catch breaking changes before users do.
QR Code Campaigns: Encode URL → Generate QR → Format Labels
Create QR code campaigns for print, events, or products: URL-encode tracking parameters, generate the QR code, and format consistent label text. Ready for Canva or print in minutes.
Rapid Prototyping: Lorem Ipsum → UUIDs → Mock JSON
Generate realistic test data in minutes: create placeholder content with Lorem Ipsum, generate bulk UUIDs for entity IDs, and format everything as mock JSON for your prototype.
Extract Data from Text with Regex Patterns
Test and debug regular expressions with real-time matching. Extract emails, URLs, phone numbers, and structured data from text.
Need a specific tool?
Browse all 20+ free developer tools available on this site.