LeanTul – Free Privacy-Focused Online Tools
Use free, fast, browser-based tools for images, text, color, encoding, and PDFs — no uploads required
What is LeanTul?
LeanTul provides a collection of fast, free, browser-based tools for everyday tasks. All tools run entirely on your device, meaning your images, text, and files are never uploaded to a server. This makes LeanTul ideal for private, sensitive, or professional workflows where data security matters.
What can you do with LeanTul?
- Image tools: resize, rotate, merge, convert, and extract color palettes
- Text tools: format JSON, convert text case, and analyze content
- Encoding tools: Base64, Hex, Binary, ASCII, and URL encoding/decoding
- Document tools: merge or split PDF files with drag-and-drop simplicity
- Music tools: tune your guitar using real-time microphone detection
Every tool is optimized for speed, accuracy, and privacy, with no logins, no limits, and no tracking of your personal data.
Explore all available tools on the LeanTul tools page. Learn more About LeanTul.
Popular Tools
Image Rotation
Rotate images 90 degrees at a time. Fix photos that are upside down or sideways.
Use Tool →Image Resize
Resize images by percentage or exact dimensions with aspect ratio control.
Use Tool →Image Merge
Combine multiple images horizontally or vertically for comparisons and collages.
Use Tool →Image Convert
Convert images between formats: PNG, JPG, WebP, AVIF, GIF, and more.
Use Tool →Color Picker
Pick colors from images and get HEX, RGB, HSL values with precision.
Use Tool →Color Palette Extractor
Extract dominant colors from images and generate beautiful color palettes.
Use Tool →EXIF Data Viewer
View hidden EXIF metadata in your photos including camera, GPS, and timestamp data.
Use Tool →EXIF Data Remover
Remove EXIF metadata from photos to protect your privacy before sharing online.
Use Tool →Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text and files.
Use Tool →PDF Merge
Combine multiple PDF files into a single document with drag-and-drop reordering.
Use Tool →PDF Split
Extract pages or split PDF into multiple files with page selection.
Use Tool →JSON Formatter
Beautify, minify, and validate JSON data with syntax highlighting and error detection.
Use Tool →Text Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
Use Tool →Base64 Encoder/Decoder
Encode and decode Base64 strings and files with support for text and binary data.
Use Tool →Hex Encoder/Decoder
Encode and decode hexadecimal strings with validation and error handling.
Use Tool →Binary Encoder/Decoder
Encode and decode binary strings with 8-bit validation.
Use Tool →URL Encoder/Decoder
Encode and decode URL strings for safe use in web addresses.
Use Tool →ASCII Encoder/Decoder
Encode and decode ASCII character codes with Unicode support.
Use Tool →Guitar Tuner
Free online guitar tuner using your device microphone with real-time pitch detection and custom tuning support.
Use Tool →File Compression
Compress files into ZIP, 7z, or TAR.GZ archives locally in your browser with adjustable compression levels.
Use Tool →Barcode Scanner
Scan QR codes and barcodes using your camera or upload images. Supports multiple formats including UPC, EAN, Code 128, and Data Matrix.
Use Tool →Barcode Generator
Generate QR codes, barcodes, and other codes from text. Create codes for URLs, contact info, products, and more in multiple formats.
Use Tool →Why LeanTul?
Privacy First
All tools run in your browser. Your data never leaves your device.
Fast & Free
No registration required. No limits. Just tools that work.
Works Everywhere
Use on any device - desktop, tablet, or mobile.
Frequently Asked Questions
Are LeanTul tools really private?
Yes. All tools run entirely in your browser using client-side code. Nothing you upload or type is ever sent to a server.
Do I need an account to use LeanTul?
No. There are no logins, subscriptions, or sign-ups — just open a tool and start using it.
Are the tools free?
Yes. All LeanTul tools are free to use with no hidden limitations.
Which devices are supported?
LeanTul works on any modern browser — desktop, mobile, tablet, Linux, Windows, macOS, iOS, and Android.