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32+ free online tools for developers and everyday use. JSON, Regex, QR codes, Image editing, Diagrams, Calculators and more — no signup, no ads, no upload.

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Developer Tools

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JSON Formatter
Beautify, minify, validate & repair JSON. Tree view, syntax highlight, error detection.
JSONFormatValidate
JSON Validator
Validate JSON syntax and structure. Detailed error messages with line numbers.
JSONValidate
.*
Regex Tester
Live regular expression tester with match highlighting, groups & flags.
RegexPattern
b64
Base64 Encode/Decode
Encode text/files to Base64 or decode Base64 strings. Image preview support.
Base64Encode
#
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes. File hashing support.
MD5SHAHash
🔑
JWT Inspector
Decode and inspect JWT tokens. View header, payload, claims and expiry.
JWTAuthToken
Diff Checker
Compare two texts side-by-side. Line-by-line differences highlighted.
DiffCompare
🎨
Color Converter
Convert between HEX, RGB, HSL, HSV. Color picker, palette generator.
ColorHEXRGB
Aa
Text Converter
16 text transformations: uppercase, titlecase, slug, camelCase and more.
TextTransform
Md
Markdown Editor
Live Markdown editor with HTML preview, export and syntax highlighting.
MarkdownPreview
YAML Converter
Convert YAML ↔ JSON bidirectionally. Validate and format YAML.
YAMLJSONConvert
🔗
URL Encoder
Encode and decode URLs. Parse URL components: protocol, host, params.
URLEncode
Lorem Generator
Generate placeholder text by words, sentences or paragraphs.
LoremPlaceholder
&
HTML Entities
Encode/decode HTML entities. Escape special characters for safe HTML.
HTMLEntitiesEncode

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