Browser-based utilities
Free Developer Tools
Use common formatting, encoding, validation and text utilities directly in your browser.
Developer Tools collection
Choose a task and open the tool directly. No account is required.
Text Diff
Free online text diff tool. Compare two texts line by line with color-coded highlighting for additions, deletions, and changes. All processing in your browser.
Regex Tester
Free online regex tester with real-time match highlighting, group capture, and common patterns. All processing in your browser — no data uploaded.
Word Counter
Free online word counter. Real-time character count, word count, sentence count, paragraph count, reading time estimation. Supports CJK and English. All processing in your browser.
Color Converter
Free online color converter tool. Convert between HEX, RGB, and HSL formats instantly. Live preview, color palettes, one-click copy. All processing in your browser.
Password Generator
Free online password generator. Create strong, secure passwords with custom length, character types, strength meter, and entropy calculation. All processing in your browser.
Website & App Development Cost Calculator
Estimate the budget and timeline for a website, web system, or mobile app. Select project type, features, design scope, and delivery schedule for an instant USD estimate.
Morse Code Translator
Free online Morse code translator. Convert text to Morse code and back in real time, play audio beeps at adjustable WPM, flash your screen, and browse the full Morse code chart. 100% in-browser, no data uploaded.
Base64 Encoder/Decoder
Free online Base64 encoder and decoder. Convert text and images to/from Base64. All processing in your browser — no data uploaded.
Cron Expression Parser
Free online Cron expression parser. Convert Cron to human-readable descriptions, preview next execution times, and build expressions with visual editor. All processing in browser.
CSS Gradient Generator
Free online CSS gradient generator. Create linear, radial, and conic gradients with visual editor, live preview, and one-click CSS code copy.
Hash Generator
Free online hash generator supporting MD5, SHA-1, SHA-256, and SHA-512. Hash text and files instantly. All processing happens in your browser — no data uploaded.
JSON Formatter
Free online JSON formatter and validator. Format, beautify, minify JSON with syntax highlighting and tree view. All processing in your browser — no data uploaded.
SEO Checker
Free online SEO checker. Analyze meta tags, heading structure, image alt attributes, Open Graph, Schema markup, keyword density, and more. Get instant SEO reports with actionable suggestions.
URL Encode / Decode Tool
Free online URL encoder and decoder tool. Supports encodeURIComponent / decodeURIComponent and Base64 encoding/decoding. Real-time conversion, multi-language support, fully browser-based for your privacy.
Built for quick, focused tasks
Each tool has one clear job and opens directly in the browser. Existing tool URLs remain unchanged, so bookmarks and shared links continue to work.
View all free toolsCan I use the tools without an account?
Yes. Developer tools open directly and do not require registration.
Is input stored?
Browser-based utilities process input for the current task. Check each tool page for its specific privacy behavior.