Browser Tools
Practical utilities for text, data, and everyday technical work. All processing happens locally in your browser.
Local-first privacy
These tools run in your browser. Your text, files, passwords, and QR content are not uploaded to Khmind servers.
QR Codes
Encryption & Security
String Encryption
Encrypt and decrypt text with a password using browser-native AES-GCM and PBKDF2.
Open tool →File Encryption
Encrypt and decrypt files locally in your browser with a password-derived AES-GCM key.
Open tool →CryptoJS AES Compatible
Encrypt and decrypt strings in the same format as the provided CryptoJS AES scripts.
Open tool →Hash Generator
Generate cryptographic hashes for text or files without sending the source data anywhere.
Open tool →Password & UUID Generator
Generate random passwords and UUIDs with browser cryptography.
Open tool →Text & Data
Text Compare
Compare two text versions with highlighted additions, removals, and whitespace controls.
Open tool →Text Cleanup
Clean text lines, remove duplicates, change case, sort naturally, and count text locally.
Open tool →Base64 Encoder / Decoder
Encode and decode Base64 strings, including URL-safe Base64, with Unicode support.
Open tool →URL Utility
Encode or decode URL text and inspect, edit, and rebuild query parameters.
Open tool →JSON Formatter
Validate, format, minify, and optionally sort JSON keys for cleaner inspection.
Open tool →CSV / JSON Converter
Convert CSV and JSON with a preview, delimiter controls, and downloadable output.
Open tool →Date & Time
Files & Media
Image Optimizer
Resize, compress, and convert images to PNG, JPEG, or WebP in your browser.
Open tool →Image Watermark
Add text or logo watermarks to images with position, opacity, and batch export controls.
Open tool →Image Metadata Cleaner
Inspect readable image metadata and export pixel-only PNG, JPEG, or WebP copies locally.
Open tool →Images to PDF
Arrange images and create a PDF with page size, orientation, and margin controls.
Open tool →PDF to Images
Export selected PDF pages as images and download them in a ZIP file.
Open tool →Audio Converter
Convert browser-supported audio to MP3 or WAV with quality and channel controls, preview, and download.
Open tool →PDF Pages
Merge PDFs, extract selected pages, or split a PDF into separate pages locally.
Open tool →ZIP Tools
Create ZIP archives, inspect their contents, and extract individual files locally.
Open tool →