Developer Tools

Open a tool, paste your input, and get a result — entirely in your browser.

All Tools

{ }
JSON Editor
Edit, format, validate, and transform JSON
FormattersMD
Markdown Preview
Live markdown editor with rendered preview
FormattersJS
JS Minifier
Minify JavaScript — compress, mangle variables, drop console.log
FormattersCSS
CSS Minifier
Minify CSS — remove whitespace, comments, and optimize values
Formatters⟺
Text Diff
Compare two texts and highlight differences
TextAa
String Utilities
Case conversion, random strings, count, transform
Text.*
Regex Tester
Test JavaScript regex with live matches, groups & replace
Text64
Base64
Encode and decode Base64 strings
EncodersURL
URL Encoder
Encode and decode URLs and query strings
Encoders<
HTML Entity
Encode and decode HTML entities
EncodersU+
Unicode Escape
Escape and unescape Unicode characters (\uXXXX)
Encoders0x
Hex Encoder
Encode text to hex bytes and decode back
Encoders01
Binary Encoder
Encode text to binary bits and decode back
Encoders🎨
Color Tools
Convert between HEX, RGB, HSL, HSV, CMYK with swatches
ConvertersIMG
Image Converter
Convert images between PNG, JPEG, and WebP formats
ConvertersUTC
DateTime Converter
Convert Unix timestamps to human-readable dates and back
ConvertersCSV
CSV ↔ JSON
Convert CSV to JSON and JSON to CSV with custom delimiters
ConvertersTS
JSON → Types
Generate TypeScript, Go, C#, Dart, Kotlin models from JSON
Converters#
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Security*
Password Generator
Generate strong random passwords
SecurityJWT
JWT Decoder
Decode and inspect JSON Web Tokens
Security///
JS Obfuscator
Obfuscate JavaScript — protect source code with string arrays and control flow
SecurityUUID
UUID Generator
Generate random UUIDs (v4)
GeneratorsOID
ObjectId Generator
Generate MongoDB-compatible ObjectIds
Generators⏱
Cron Generator
Build cron expressions with a visual editor
Schedulers⏰
Cron Parser
Parse cron expressions and see next run times
Schedulers

Formatters

{ }
JSON Editor
Edit, format, validate, and transform JSON
MD
Markdown Preview
Live markdown editor with rendered preview
JS
JS Minifier
Minify JavaScript — compress, mangle variables, drop console.log
CSS
CSS Minifier
Minify CSS — remove whitespace, comments, and optimize values

Text

⟺
Text Diff
Compare two texts and highlight differences
Aa
String Utilities
Case conversion, random strings, count, transform
.*
Regex Tester
Test JavaScript regex with live matches, groups & replace

Encoders

64
Base64
Encode and decode Base64 strings
URL
URL Encoder
Encode and decode URLs and query strings
<
HTML Entity
Encode and decode HTML entities
U+
Unicode Escape
Escape and unescape Unicode characters (\uXXXX)
0x
Hex Encoder
Encode text to hex bytes and decode back
01
Binary Encoder
Encode text to binary bits and decode back

Converters

🎨
Color Tools
Convert between HEX, RGB, HSL, HSV, CMYK with swatches
IMG
Image Converter
Convert images between PNG, JPEG, and WebP formats
UTC
DateTime Converter
Convert Unix timestamps to human-readable dates and back
CSV
CSV ↔ JSON
Convert CSV to JSON and JSON to CSV with custom delimiters
TS
JSON → Types
Generate TypeScript, Go, C#, Dart, Kotlin models from JSON

Security

#
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
*
Password Generator
Generate strong random passwords
JWT
JWT Decoder
Decode and inspect JSON Web Tokens
///
JS Obfuscator
Obfuscate JavaScript — protect source code with string arrays and control flow

Generators

UUID
UUID Generator
Generate random UUIDs (v4)
OID
ObjectId Generator
Generate MongoDB-compatible ObjectIds

Schedulers

⏱
Cron Generator
Build cron expressions with a visual editor
⏰
Cron Parser
Parse cron expressions and see next run times

Why Choose EasyDev Tools?

EasyDev is a curated toolbox for software engineers who want fast, reliable, ad-free utilities for everyday work — formatting JSON, decoding Base64, generating UUIDs, building cron expressions, comparing text, and more. Every tool here is designed to load instantly, work offline once the page is open, and never get in the way of shipping code.

100% Client-Side Privacy

Every tool on EasyDev runs entirely inside your browser. The data you paste — API keys, JWT tokens, JSON payloads, private SQL queries, customer strings — is processed locally by JavaScript on your own machine. Nothing is ever uploaded to a server, logged in an analytics pipeline, or shared with a third party. This is a deliberate architectural choice: we do not run a backend that receives your input, so there is no transcript of your usage and no opportunity for accidental data leakage. If you work under compliance constraints — SOC 2, HIPAA, GDPR, internal data-handling policies — you can use EasyDev without worrying that confidential text crossed an external boundary. The privacy guarantee is enforced by the network: open DevTools, flip to the Network tab, and you will see zero requests when you click Encode, Format, or Generate.

Fast & Ad-Free Experience

EasyDev is built on Next.js with statically rendered pages, minimal JavaScript bundles per tool, and no ad networks, no tracking pixels, and no popup overlays. Open a tool, do the job, close the tab — that is the entire flow. There is no signup, no rate limit, no “upgrade to Pro” modal. The tools are free because they are simple and cheap to host, and they will stay free. If something feels slow, missing, or wrong, the source is auditable and the feedback loop is short — we ship fixes routinely. EasyDev is what every developer toolbox should be: focused, honest, and out of your way.