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Simple, fast and privacy-friendly online tools for developers, students, and creators — free for everyone. Most tools run 100% locally in your browser.

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Browse Categories

Explore our curated collections of online tools.

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Developer Tools
Formatters, encoders, decoders, and utilities for software developers.
Text Tools
Word counting, case converting, diffing, and text formatting tools.
Calculators & Converters
Scientific calculations, unit conversions, age and date math.
Image Tools
Browser-based image compression, resizing, cropping, and conversion.
PDF Tools
Merge, split, extract pages, and convert PDF documents locally.
Security & Privacy
Password generators, hashers, entropy checkers, and privacy tools.
AI Tools
Extensible AI assistants for text summarization, rewriting, and Q&A.
Data Converters
Convert CSV, JSON, Base64, and file data formats quickly.

Popular Tools

Most used tools by developers, students, and creators.

JSON Formatter & Minifier
Format, beautify, minify, and validate JSON data instantly with syntax highlighting.
Client-Side Open Tool
Base64 Encoder / Decoder
Encode text or binary data into Base64 format and decode Base64 strings safely.
Client-Side Open Tool
JWT Decoder
Decode JSON Web Tokens (JWT) to inspect header, payload claims, and signature info.
Client-Side Open Tool
UUID / GUID Generator
Generate bulk cryptographically secure RFC 4122 v4 and v1 UUIDs/GUIDs.
Client-Side Open Tool
Regex Tester & Matcher
Test JavaScript regular expressions in real-time with pattern syntax highlighting and match groups.
Client-Side Open Tool
Markdown Live Editor
Write Markdown text with instant side-by-side rendered HTML preview, download, and copy.
Client-Side Open Tool
Word & Character Counter
Count words, total characters, characters without spaces, sentences, paragraphs, and reading time.
Client-Side Open Tool
Text Case Converter
Transform text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case.
Client-Side Open Tool
Text Diff Checker
Compare two blocks of text side-by-side or inline to visually highlight additions, deletions, and changes.
Client-Side Open Tool
Scientific Calculator
Advanced scientific calculator supporting trigonometry, exponents, roots, logarithms, and memory functions.
Client-Side Open Tool
Universal Unit Converter
Convert Length, Weight, Temperature, Area, Volume, Speed, Time, Data Storage, Energy, and Pressure.
Client-Side Open Tool
Image Compressor
Compress JPEG, PNG, and WebP images locally to reduce file size while maintaining visual quality.
Client-Side Open Tool
Image Resizer
Resize image dimensions by pixels or percentage with aspect ratio lock.
Client-Side Open Tool
Image Format Converter
Convert images between PNG, JPG/JPEG, and WebP formats instantly.
Client-Side Open Tool
PDF to Images Converter
Convert PDF document pages into high-resolution PNG or JPEG images.
Client-Side Open Tool
Images to PDF Converter
Combine multiple images into a single clean PDF document.
Client-Side Open Tool
PDF Merger
Merge multiple PDF files into one ordered PDF document.
Client-Side Open Tool
Password & Passphrase Generator
Generate ultra-secure, cryptographically strong random passwords or passphrase strings.
Client-Side Open Tool
Password Strength Analyzer
Evaluate password strength, entropy bits, estimated crack time, and weakness alerts.
Client-Side Open Tool
AI Text Summarizer
Summarize long articles, documents, or reports into bullet points or concise key takeaways.
Extensible API Open Tool
CSV to JSON / JSON to CSV
Convert tabular CSV data to structured JSON objects and vice versa with custom delimiters.
Client-Side Open Tool

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