Tiny tools that respect your data
Everything runs locally. Nothing is uploaded. No logs.
Encoding
Base64
Encode and decode Base64 text
URL Encode
Percent-encode and decode URLs and query strings
Password Generator
Generate secure random passwords with custom length and character sets
Hash Generator
Compute CRC32 / MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512 digests for text or files
Bcrypt Hash
Generate bcrypt password hashes locally with adjustable cost
Base Converter
Convert integers between binary, octal, decimal, and hexadecimal
Design
Text
JSON Formatter
Prettify, minify, and validate JSON with clear parse errors
Case Converter
Transform text between common naming and writing styles
Character Counter
Count characters, lines, paragraphs, and UTF-8 bytes locally
YAML <-> JSON
Convert between YAML and JSON locally
Diff Viewer
Compare two texts line by line with unified or side-by-side views, locally in your browser.
Markdown Editor
Write Markdown with live preview, auto-saved to your browser, and export it as a standalone HTML file.
Developer
UUID Generator
Generate random v4 and time-ordered v7 UUIDs in bulk
Session Secret
Generate lowercase hex secrets equivalent to openssl rand -hex 32 or 64
Timestamp Converter
Convert Unix timestamps and ISO dates to local and UTC time
CSV Viewer
Parse CSV text and preview it as a table
Cron Expression Parser
Build cron expressions from schedule controls
HTTP Status Codes
Searchable reference for HTTP response status codes
File Type Inspector
Identify a file's real type from its magic bytes and spot extension mismatches, locally in your browser.
User Agent Parser
View your browser's user agent and parse any UA string into browser, engine, OS, and device, locally in your browser.
docker run → Compose
Convert a docker run command into a docker-compose.yaml service, locally in your browser.
General
Discount Price Calculator
Allocate fees and discounts to each item based on original price
Dead Pixel Test
Find dead or stuck pixels by filling the screen with solid test colors. Runs entirely in your browser.
Keyboard Tester
Test every key on your keyboard with a visual Mac or Windows layout. Runs entirely in your browser.
World Clock Map
See the current time in major cities on a world map, with colors that follow the live day–night line. Runs entirely in your browser.
Image
Image Compressor
Compress JPEG, PNG, and WebP images with adjustable quality
Image Resizer
Resize JPEG, PNG, and WebP images by percentage, max dimension, or custom size
Image Cropper
Crop JPEG, PNG, and WebP images with free or fixed aspect ratios
Photo Collage
Combine multiple photos into a grid collage with adjustable spacing, corner radius, and background
macOS Icon Generator
Generate a macOS AppIcon.appiconset bundle from a 1024×1024+ square image
Aspect Ratio Calculator
Calculate width and height for common aspect ratios
Image Metadata Viewer
Inspect image dimensions, file info, and EXIF locally
Image Metadata Remover
Strip EXIF and GPS metadata from images losslessly, locally
QR Code
QR Generator
Create QR codes from text or URLs
QR Decoder
Decode QR codes from an image
WiFi QR Code
Create a QR code that lets phones join your WiFi network with one scan, locally in your browser.
vCard QR Code
Create a contact card (vCard) QR code that saves straight to the address book, locally in your browser.
Barcode Generator
Generate Code 128, EAN, UPC, and other barcodes as PNG or SVG locally in your browser.