All Online Tools
Explore our complete library of 48 free, fast, open-source online tools.
All Tools
Developer Tools
Text Tools
Calculators & Converters
Image Tools
PDF Tools
Security & Privacy
AI Tools
Data Converters
JSON Formatter & Minifier
Format, beautify, minify, and validate JSON data instantly with syntax highlighting.
Base64 Encoder / Decoder
Encode text or binary data into Base64 format and decode Base64 strings safely.
Regex Tester & Matcher
Test JavaScript regular expressions in real-time with pattern syntax highlighting and match groups.
Unix Timestamp Converter
Convert Unix epoch timestamps (seconds/milliseconds) to human-readable dates and back.
Markdown Live Editor
Write Markdown text with instant side-by-side rendered HTML preview, download, and copy.
SQL Query Formatter
Beautify and format complex SQL queries with proper keyword capitalization and line indents.
Word & Character Counter
Count words, total characters, characters without spaces, sentences, paragraphs, and reading time.
Text Case Converter
Transform text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case.
Remove Duplicate Lines
Clean list data by removing duplicate lines, trimming whitespace, or preserving line order.
Find & Replace Text
Find words or phrases in large text blocks and replace them using plain text or regex.
Text Diff Checker
Compare two blocks of text side-by-side or inline to visually highlight additions, deletions, and changes.
Lorem Ipsum Generator
Generate custom placeholder text in paragraphs, sentences, or words for layout designs.
Scientific Calculator
Advanced scientific calculator supporting trigonometry, exponents, roots, logarithms, and memory functions.
Universal Unit Converter
Convert Length, Weight, Temperature, Area, Volume, Speed, Time, Data Storage, Energy, and Pressure.
Percentage Calculator
Calculate percentage values, percentage increases/decreases, and what percent one number is of another.
Age Calculator
Calculate exact age in years, months, weeks, days, hours, and minutes from birthdate.
Date Difference Calculator
Calculate the exact duration, working days, or total days between two dates.
BMI Calculator
Calculate Body Mass Index (BMI) using Metric or Imperial measurements with health category ranges.
Image Compressor
Compress JPEG, PNG, and WebP images locally to reduce file size while maintaining visual quality.
Image Metadata / EXIF Viewer
View camera settings, date taken, dimensions, and hidden EXIF metadata embedded in images.
Password & Passphrase Generator
Generate ultra-secure, cryptographically strong random passwords or passphrase strings.
Password Strength Analyzer
Evaluate password strength, entropy bits, estimated crack time, and weakness alerts.
Text Hash Generator
Compute SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes for any text string.
Local File Checksum Calculator
Calculate SHA-256 or MD5 hashes for large local files to verify integrity and downloads.
URL & Domain Technical Inspector
Perform technical analysis of URL structure, protocol, parameters, and potential phishing indicators.
AI Text Summarizer
Summarize long articles, documents, or reports into bullet points or concise key takeaways.
AI Text Rewriter & Paraphraser
Rewrite text to improve clarity, tone, conciseness, or change vocabulary.
AI Question & Quiz Generator
Generate comprehension questions or flashcards from provided study text.
CSV to JSON / JSON to CSV
Convert tabular CSV data to structured JSON objects and vice versa with custom delimiters.
File to Base64 Data URI
Convert images, fonts, or files into Data URI strings for HTML/CSS embedding.