Dev Tools for Full-Stack Developers
Full-stack developers move fluidly between frontend concerns like CSS layout and image optimization, and backend concerns like JWT authentication, SQL queries, and data serialization. The breadth of the role means you need tools across every domain — and you need them to be immediately accessible without install friction. This collection covers the complete full-stack toolkit: from CSS generators and color tools to JSON formatters, database helpers, security utilities, and deployment aids.
Pretty-print and format JSON with proper indentation.
Check if your JSON is valid and find syntax errors.
Convert JSON to YAML format with proper indentation.
Convert YAML to JSON with proper structure and types.
Format and beautify SQL queries with proper indentation and uppercase keywords.
Convert CSV data to a JSON array of objects.
Decode and inspect JSON Web Token header and payload.
Generate SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text.
Generate HMAC-SHA-256/384/512 message authentication codes using a secret key.
Test regular expressions against text with real-time match highlighting.
Parse cron expressions and see next execution times in plain English.
Generate random UUIDs (v4) for use as unique identifiers.
Convert Unix timestamps to human-readable dates and vice versa.
Convert HEX color codes to RGB and HSL values with a live preview.
Pretty-print CSS with proper indentation and structure.
Interactive CSS flexbox playground with live preview and copyable CSS code.
Compress images by adjusting JPEG quality to reduce file size without leaving your browser.
Encode text or binary data to Base64 format.
Encode text for safe use in URLs using percent-encoding.
Build cURL commands visually with URL, method, headers, body, and auth.
Live Markdown editor with side-by-side HTML preview.
Parse, edit, and export .env files in a key-value table.
FAQ
- Which tools help most when switching between frontend and backend work?
- JSON Formatter is useful on both sides — formatting API responses when debugging frontend code and inspecting request payloads on the backend. Base64 tools are needed for both image data URIs (frontend) and encoding secrets (backend). Regex Tester applies to form validation on the frontend and log parsing on the backend.
- How do I quickly set up test data for a full-stack feature?
- Use Fake Data Generator to create realistic user records, then JSON to CSV or JSON to SQL Create to convert them to the format your database migration or seed script expects. UUID Generator provides real v4 or v7 IDs that match your schema.
- What is the best way to manage environment variables across environments?
- The Env File Editor provides a structured view of .env files, validates variable names, and helps spot inconsistencies across development, staging, and production configs. Pair it with the Base64 Encoder for encoding secrets that will be stored in CI/CD environment variable fields.