Developer Tools
๐ป Developer
Toolbox
JSON, encoding, CSS, DevOps & India-specific tools.
All client-side โ zero data sent to any server.
$ calcnation --tools developer
โ JSON Formatter LIVE
โ Base64 Encoder LIVE
โ JWT Decoder LIVE
โ Hash Generator SOON
โ PAN Validator SOON
โ
๐ป All Developer Tools
โก Live
JSON Formatter
Format, validate & minify JSON with syntax highlighting.
โก Live
JWT Decoder
Decode JWT tokens โ header, payload & expiry check.
โก Live
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 instantly.
โก Live
UUID Generator
Cryptographically random v4 UUIDs โ bulk generate & copy.
โก Live
Password Generator
Secure passwords with strength meter & custom rules.
โก Live
Regex Tester
Test and debug JavaScript regular expressions with live matches & groups.
โก Live
Color Picker & Converter
Pick colors and convert between HEX, RGB, HSL, HSV, CMYK & LAB with contrast checker.
โก Live
Cron Expression Builder
Visual cron builder with human-readable text, next run times, Quartz support & code snippets.
โก Live
HTML โ Markdown Converter
Convert HTML to GFM Markdown with live preview, diff view, front matter, platform presets & code download.
โก Live
Meta Tag Generator
Generate SEO, OG, Twitter Card, JSON-LD tags. Google preview, social preview, SEO score, export for HTML/Next.js/React/Vue.
๐ Soon
JSON Validator
Validate JSON with error line highlighting.
๐ Soon
JSON Minifier
Minify JSON to reduce file size.
๐ Soon
JSON Compare
Side-by-side JSON diff viewer.
๐ Soon
JSON to TypeScript
Convert JSON to TypeScript interfaces.
๐ Soon
JSON to CSV
Export JSON arrays to CSV format.
๐ Soon
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 generator.
๐ Soon
AES Encrypt/Decrypt
Client-side AES encryption.
๐ Soon
URL Encode/Decode
Encode or decode URL components.
๐ Soon
HMAC Generator
HMAC-SHA256/512 for API signatures.
๐ Soon
Bcrypt Generator
Generate bcrypt hashes with custom cost.
๐ Soon
CSS Gradient Generator
Visual CSS gradient builder โ linear & radial.
๐ Soon
Box Shadow Generator
Drag-and-drop CSS box shadow creator.
๐ Soon
Color Picker
Pick HEX/RGB/HSL with live preview.
๐ Soon
Contrast Checker
WCAG A/AA/AAA accessibility contrast.
๐ Soon
Flexbox Playground
Visual CSS Flexbox generator.
๐ Soon
SQL Formatter
Format SQL for MySQL, PostgreSQL, MSSQL.
๐ Soon
Regex Tester
Live regex tester with match highlighting.
๐ Soon
HTML Formatter
Beautify and format HTML markup.
๐ Soon
Markdown Preview
GitHub-flavoured Markdown live preview.
๐ Soon
Code Diff Checker
Side-by-side code diff viewer.
๐ Soon
Unix Timestamp
Convert Unix timestamps to readable dates.
๐ Soon
QR Code Generator
Generate QR codes from URL or text.
๐ Soon
Slug Generator
URL-safe slug โ camel, kebab, snake case.
๐ Soon
Cron Builder
Visual cron expression builder.
๐ Soon
Lorem Ipsum
Placeholder text generator.
๐ Soon
Binary Converter
Binary Decimal Hex Octal converter.
๐ Soon
Byte Size Converter
Convert KB, MB, GB, TB.
๐ Soon
Roman Numerals
Arabic to Roman numeral converter.
๐ Soon
Image to Base64
Convert images to Base64 data URL.
๐ Soon
Favicon Generator
Generate favicons in all sizes.
๐ Soon
SVG Optimizer
Minify and optimize SVG files.
๐ Soon
PAN Validator
Validate PAN card number and detect type.
๐ Soon
GSTIN Validator
Validate GSTIN, extract state & entity.
๐ Soon
IFSC Decoder
IFSC code โ bank, branch, city info.
๐ Soon
Aadhaar Masker
Mask Aadhaar per UIDAI standard.
๐ Soon
Pincode Lookup
Pincode to state, city, district.
๐ Soon
Dockerfile Generator
Generate production-ready Dockerfiles.
๐ Soon
.gitignore Generator
.gitignore for any language or framework.
๐ Soon
nginx Config
nginx server blocks & reverse proxy config.
๐ Soon
README Generator
Professional README.md generator.
๐ Soon
cURL to Fetch/Axios
Convert cURL to fetch or Axios code.
๐ Soon
HTTP Status Reference
All HTTP status codes with explanations.
๐ Soon
URL Parser
Parse URL into host, path, query params.
Free Online Developer Tools โ CalcNation
CalcNation's Developer Toolbox offers free online developer tools for JSON formatting, Base64 encoding, JWT decoding, password generation, and more. All tools run in your browser โ no data sent to servers.
India Dev Tools โ PAN, GSTIN, IFSC, Aadhaar
India-specific developer utilities: PAN card validator, GSTIN validator, IFSC code decoder, Aadhaar masker and Pincode lookup โ built for Indian developers and fintech apps.