Developer Tools
Open a tool, paste your input, and get a result — entirely in your browser.
All Tools
{ }FormattersSQLFormattersMDFormattersJSFormattersCSSFormattersSVGFormatters≡≡Text⟺TextAaText.*Texta-bText64EncodersURLEncoders<EncodersU+Encoders0xEncoders01Encoders🔍ConvertersPDFConverters🗜️Converters🎨ConvertersIMGConverters64→IMGConverters✂ConvertersSVGConvertersYMLConverters2→16ConvertersTZConvertersUTCConvertersCSVConvertersTSConverters#Security*SecurityJWTSecurity///SecurityUUIDGeneratorsOIDGeneratorsULIDGeneratorsLiGenerators⏱Schedulers⏰SchedulersICOWeb Tools▢Web ToolsQRWeb ToolsAAWeb ToolsOGWeb ToolsGITWeb Tools
JSON Editor
Edit, format, validate, and transform JSON
SQL Formatter
Format, beautify, and minify SQL queries across MySQL, PostgreSQL, SQLite, T-SQL
Markdown Preview
Live markdown editor with rendered preview
JS Minifier
Minify JavaScript — compress, mangle variables, drop console.log
CSS Minifier
Minify CSS — remove whitespace, comments, and optimize values
SVG Minifier
Minify SVG markup — strip comments and collapse whitespace
Find Duplicate Lines
Detect duplicate lines with color-coded visual highlighting
Text Diff
Compare two texts and highlight differences
String Utilities
Case conversion, random strings, count, transform
Regex Tester
Test JavaScript regex with live matches, groups & replace
Slug Generator
Turn any text into a clean, URL-safe slug
Base64
Encode and decode Base64 strings
URL Encoder
Encode and decode URLs and query strings
HTML Entity
Encode and decode HTML entities
Unicode Escape
Escape and unescape Unicode characters (\uXXXX)
Hex Encoder
Encode text to hex bytes and decode back
Binary Encoder
Encode text to binary bits and decode back
Image to Text (OCR)
Extract text from images, screenshots & receipts with 100% client-side WebAssembly
PDF Text Extractor
Extract text and inspect pages from PDF documents with in-browser privacy
Bulk Image Compressor
Compress, resize & convert multiple PNG, JPG & WebP images in batch with in-browser privacy
Color Tools
Convert between HEX, RGB, HSL, HSV, CMYK with swatches
Image Converter
Convert images between PNG, JPEG, and WebP formats
Base64 to Image
View, decode, and download images from a Base64 string
Image Editor
Crop, rotate, flip, resize, and adjust filters, then optimize and export
SVG to PNG
Convert SVG markup to PNG or WebP at any resolution
YAML ↔ JSON
Convert YAML to JSON and JSON to YAML
Number Base Converter
Convert numbers between binary, octal, decimal, and hex
Timezone Converter
Convert a date and time between timezones
DateTime Converter
Convert Unix timestamps to human-readable dates and back
CSV ↔ JSON
Convert CSV to JSON and JSON to CSV with custom delimiters
JSON → Types
Generate TypeScript, Go, C#, Dart, Kotlin models from JSON
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Password Generator
Generate strong random passwords
JWT Decoder
Decode and inspect JSON Web Tokens
JS Obfuscator
Obfuscate JavaScript — protect source code with string arrays and control flow
UUID Generator
Generate random UUIDs (v4)
ObjectId Generator
Generate MongoDB-compatible ObjectIds
ULID Generator
Generate sortable, timestamp-based ULIDs
Lorem Ipsum Generator
Generate placeholder text — words, sentences, or paragraphs
Cron Generator
Build cron expressions with a visual editor
Cron Parser
Parse cron expressions and see next run times
Favicon Generator
Generate favicon PNGs in every standard size from one image
Placeholder Image Generator
Generate placeholder images with custom size, color, and text
QR Code Generator
Generate a QR code from any text or URL
WCAG Contrast Checker
Check color contrast ratio against WCAG AA/AAA
Meta Tag Generator
Generate meta, Open Graph, and Twitter Card tags with live previews
.gitignore Generator
Generate a .gitignore file from language, IDE, and OS templates
Formatters →
{ }SQLMDJSCSSSVG
JSON Editor
Edit, format, validate, and transform JSON
SQL Formatter
Format, beautify, and minify SQL queries across MySQL, PostgreSQL, SQLite, T-SQL
Markdown Preview
Live markdown editor with rendered preview
JS Minifier
Minify JavaScript — compress, mangle variables, drop console.log
CSS Minifier
Minify CSS — remove whitespace, comments, and optimize values
SVG Minifier
Minify SVG markup — strip comments and collapse whitespace
Text →
≡≡⟺Aa.*a-b
Find Duplicate Lines
Detect duplicate lines with color-coded visual highlighting
Text Diff
Compare two texts and highlight differences
String Utilities
Case conversion, random strings, count, transform
Regex Tester
Test JavaScript regex with live matches, groups & replace
Slug Generator
Turn any text into a clean, URL-safe slug
Encoders →
64URL<U+0x01
Base64
Encode and decode Base64 strings
URL Encoder
Encode and decode URLs and query strings
HTML Entity
Encode and decode HTML entities
Unicode Escape
Escape and unescape Unicode characters (\uXXXX)
Hex Encoder
Encode text to hex bytes and decode back
Binary Encoder
Encode text to binary bits and decode back
Converters →
🔍PDF🗜️🎨IMG64→IMG✂SVGYML2→16TZUTCCSVTS
Image to Text (OCR)
Extract text from images, screenshots & receipts with 100% client-side WebAssembly
PDF Text Extractor
Extract text and inspect pages from PDF documents with in-browser privacy
Bulk Image Compressor
Compress, resize & convert multiple PNG, JPG & WebP images in batch with in-browser privacy
Color Tools
Convert between HEX, RGB, HSL, HSV, CMYK with swatches
Image Converter
Convert images between PNG, JPEG, and WebP formats
Base64 to Image
View, decode, and download images from a Base64 string
Image Editor
Crop, rotate, flip, resize, and adjust filters, then optimize and export
SVG to PNG
Convert SVG markup to PNG or WebP at any resolution
YAML ↔ JSON
Convert YAML to JSON and JSON to YAML
Number Base Converter
Convert numbers between binary, octal, decimal, and hex
Timezone Converter
Convert a date and time between timezones
DateTime Converter
Convert Unix timestamps to human-readable dates and back
CSV ↔ JSON
Convert CSV to JSON and JSON to CSV with custom delimiters
JSON → Types
Generate TypeScript, Go, C#, Dart, Kotlin models from JSON
Security →
Generators →
Schedulers →
Web Tools →
ICO▢QRAAOGGIT
Favicon Generator
Generate favicon PNGs in every standard size from one image
Placeholder Image Generator
Generate placeholder images with custom size, color, and text
QR Code Generator
Generate a QR code from any text or URL
WCAG Contrast Checker
Check color contrast ratio against WCAG AA/AAA
Meta Tag Generator
Generate meta, Open Graph, and Twitter Card tags with live previews
.gitignore Generator
Generate a .gitignore file from language, IDE, and OS templates
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View header algorithms, payload claims, expiration timestamps, and signature details without exposing tokens.View Guide →Generate SHA-256 & SHA-512 Cryptographic Hashes OnlineGenerate SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes from any text string online using Web Crypto API.View Guide →Generate MD5 Checksums & Hashes OnlineGenerate 32-character MD5 hashes from text strings online for file integrity checks and database lookup keys.View Guide →Generate SHA-512 Cryptographic Hashes OnlineGenerate 128-character SHA-512 cryptographic hashes online using Web Crypto API. 100% private client-side hashing.View Guide →Bulk Cryptographically Secure UUID GeneratorGenerate cryptographically random UUID v4 and sortable UUID identifiers in bulk. 100% client-side with Web Crypto API.View Guide →Bulk UUID v4 Generator for Database SeedingGenerate bulk batches of 50 to 500 random UUIDs for database seeding, test fixtures, and mock datasets. 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Count duplicates and clean datasets free.View Guide →SEO URL Slug Generator (Title to Kebab-Case)Convert article titles and headlines into clean, URL-safe kebab-case permalink slugs for WordPress, Next.js, and blogs.View Guide →Universal String Case Converter (camel, snake, kebab, Pascal)Convert text and code identifiers between camelCase, snake_case, PascalCase, kebab-case, CONSTANT_CASE, and Title Case.View Guide →Base64 Encoder & Decoder Online (UTF-8 Unicode Safe)Encode and decode Base64 strings online with full UTF-8 Unicode support. Safe, fast, and 100% in-browser client-side tool.View Guide →URL Encoder & Decoder Online (Percent-Encoding)Encode and decode URLs and query string parameters online. Converts special characters to percent-encoded hex (%20, %2F) safely.View Guide →HTML Entity Encoder & Decoder OnlineEncode and decode HTML entities (<, >, &, ") online. Prevent XSS vulnerabilities by escaping HTML characters.View Guide →Unicode Escape (\uXXXX) Encoder & Decoder OnlineConvert Unicode text into \uXXXX escape sequences and decode \uXXXX codepoints back to readable characters online.View Guide →Hex String to ASCII / UTF-8 Text Converter OnlineConvert hex byte strings (e.g. 48 65 6c 6c 6f) to readable ASCII/UTF-8 text and text to hex online for free.View Guide →Binary to Text & ASCII Translator OnlineConvert binary code (0s and 1s) to readable text and encode text to 8-bit binary strings online in real time.View Guide →WCAG 2.1 Color Contrast Ratio Checker (AA & AAA)Check color contrast ratio between text and background colors against WCAG 2.1 AA and AAA accessibility standards.View Guide →Universal Color Code Converter (HEX, RGB, HSL, CMYK)Convert color codes between HEX, RGB, HSL, HSV, and CMYK with color swatches and copyable CSS color values.View Guide →Free Instant QR Code Generator (No Signup, No Expiry)Generate custom QR codes from any URL, text, WiFi credentials, or email. High-resolution PNG download with zero account creation.View Guide →SEO Meta Tag & Open Graph Generator with Live PreviewGenerate SEO meta tags, Open Graph (og:title, og:image), and Twitter Card tags with live social media card previews.View Guide →.gitignore File Generator (Node, Python, Go & OS Templates)Generate comprehensive .gitignore files for Node.js, Python, Go, Rust, macOS, Windows, VS Code, and JetBrains in one click.View Guide →Lorem Ipsum Dummy Text Generator for DesignersGenerate custom paragraphs, sentences, and words of Lorem Ipsum dummy text for website design mockups and typography layouts.View Guide →All-in-One String Utilities & Word Counter OnlineAll-in-one text utilities: word counter, character counter, random string generator, and string case transformation free online.View Guide →Bulk Image Compressor & Batch WebP Converter (100% Private)Compress dozens of PNG, JPG, and WebP images simultaneously directly in your browser. 100% private, zero file uploads, download all as ZIP.View Guide →Compress Images Under 100KB Online (Batch Optimizer)Compress PNG and JPG images to under 100KB or 50KB for fast web loading and email attachments. Free in-browser batch image optimizer.View Guide →Batch PNG to WebP Converter Online (Preserve Alpha Transparency)Convert multiple PNG images to modern WebP format in bulk with transparency support. Reduce website image payloads by up to 80%.View Guide →Free TinyPNG Alternative (Zero Uploads, No Limits)A free, private alternative to TinyPNG with no 20-image limit, no file size caps, and zero cloud uploads. Batch compress images securely.View Guide →Compress and Optimize JPEG Images in Batch OnlineBatch compress and resize JPEG/JPG camera photos online. Reduce JPEG file weight while preserving color vibrancy and sharpness.View Guide →Batch Resize Multiple Images Online (Proportional Scaling)Resize multiple images at once by maximum width and height. Scale down batches of photos for responsive web design and thumbnails.View Guide →
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.