LeanTul LeanTul

Free, private tools that run in your browser

Images, text, encoding, PDFs, and more. Nothing you open is ever uploaded.

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Tools

Image Rotation
Rotate images 90 degrees at a time. Fix photos that are upside down or sideways.
Image Resize
Resize images by percentage or exact dimensions with aspect ratio control.
Image Merge
Combine multiple images horizontally or vertically for comparisons and collages.
Image Convert
Convert images between formats: HEIC, PNG, JPG, WebP, AVIF, GIF, and more.
Color Picker
Pick colors from images and get HEX, RGB, HSL values with precision.
Color Palette Extractor
Extract dominant colors from images and generate beautiful color palettes.
EXIF Data Viewer
View hidden EXIF metadata in your photos including camera, GPS, and timestamp data.
EXIF Data Remover
Remove EXIF metadata from photos to protect your privacy before sharing online.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text and files.
PDF Merge
Combine multiple PDF files into a single document with drag-and-drop reordering.
PDF Split
Extract pages or split PDF into multiple files with page selection.
JSON Formatter
Beautify, minify, and validate JSON data with syntax highlighting and error detection.
Text Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
Base64 Encoder/Decoder
Encode and decode Base64 strings and files with support for text and binary data.
Hex Encoder/Decoder
Encode and decode hexadecimal strings with validation and error handling.
Binary Encoder/Decoder
Encode and decode binary strings with 8-bit validation.
URL Encoder/Decoder
Encode and decode URL strings for safe use in web addresses.
ASCII Encoder/Decoder
Encode and decode ASCII character codes with Unicode support.
Guitar Tuner
Free online guitar tuner using your device microphone with real-time pitch detection and custom tuning support.
File Compression
Compress files into ZIP, 7z, or TAR.GZ archives locally in your browser with adjustable compression levels.
Barcode Scanner
Scan QR codes and barcodes using your camera or upload images. Supports multiple formats including UPC, EAN, Code 128, and Data Matrix.
Barcode Generator
Generate QR codes, barcodes, and other codes from text. Create codes for URLs, contact info, products, and more in multiple formats.

Why LeanTul?

Privacy first
All tools run in your browser. Your data never leaves your device.
Fast and free
No registration, no limits. Just tools that work.
Works everywhere
Desktop, tablet, or phone. Any modern browser.

What is LeanTul?

LeanTul is a collection of fast, free, browser-based tools for everyday tasks. Every tool runs entirely on your device, so your images, text, and files are never uploaded to a server. That makes it a fit for private, sensitive, or professional work where data security matters.

  • 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 and decoding
  • Document tools: merge or split PDF files with drag-and-drop
  • Music tools: tune your guitar using real-time microphone detection

No logins, no limits, and no tracking. Explore all tools on the tools page or learn more about LeanTul.

Frequently asked questions