Web Tools
Useful tools,
kept simple.
A collection of practical tools that work directly in your browser. Pick what you need and get started.
Tools
Choose a tool
Image, PDF, text, date, and developer tools. Everything runs locally in your browser.
IMAGE
Image tools
Convert, edit, and prepare images directly in your browser.
Image Merger
Combine multiple images vertically or horizontally into one image.
Image Color Picker
Pick HEX, RGB, and HSL colors from any pixel in an image.
Remove Image Metadata
Remove EXIF, GPS, XMP, and other embedded metadata from JPG, PNG, and WebP images in your browser.
Favicon & Icon Generator
Generate favicon.ico, PNG app icons, and favicon.svg from SVG sources directly in your browser.
HEIC Converter
Convert HEIC and HEIF photos to JPG, PNG, or WebP in your browser.
Convert Images to WebP
Convert JPG and PNG images to WebP directly in your browser.
Image Resizer
Resize JPG, PNG, and WebP images while preserving their aspect ratio.
JPG / WebP Compressor
Reduce JPG and WebP file sizes while preserving visual quality.
Image Format Converter
Convert JPG, PNG, and WebP images to another image format.
Image Cropper
Crop images and export them with the aspect ratio or output size you need.
PDF tools
Work with PDF files directly in your browser without uploading them.
PDF Merger
Combine multiple PDF files into one PDF in the order you choose.
Split & Extract PDF Pages
Extract selected pages into a new PDF or split every page into separate PDF files in your browser.
PDF Page Organizer
Reorder, delete, and rotate PDF pages using thumbnail previews directly in your browser.
Images to PDF
Combine JPG, PNG, and WebP images into one PDF with configurable paper size, orientation, and margins.
PDF to Images
Convert PDF pages to PNG, JPG, or WebP images with selectable page ranges and resolution.
TEXT
Text tools
Count, compare, and clean up text directly in your browser.
Character Counter
Count characters, lines, UTF-8 bytes, words, and selected text instantly in your browser.
Text Diff
Compare two texts line by line and highlight added, deleted, and changed content directly in your browser.
Whitespace & Line Break Cleaner
Clean up leading and trailing whitespace, repeated spaces, blank lines, and line breaks directly in your browser.
DATE
Date & calendar tools
Work with dates, Japanese eras, and calendars directly in your browser.
Japanese Era Converter
Convert between Gregorian years and historical Japanese eras from Taika to Reiwa.
Age Calculator
Calculate full age, Japanese counting age, and the days until the next birthday from a birth date.
Era & Zodiac Search
Find the Gregorian year, Japanese era, and zodiac animal from a year input.
24 Solar Terms Finder
Find the 24 solar term for a date, with its transition time, seasonal notes, and the corresponding 72 kō reference.
Birthday Profile
Explore your birth date through its weekday, zodiac, Japanese era, original color, Moon phase, seasonal terms, notable people, and more.
Life Timeline
See major events in Japan and around the world alongside how old you were when they happened.
DEVELOPER
Developer tools
Small utilities for JSON, encoding, identifiers, and timestamps.
JSON Formatter & Validator
Format, validate, and minify JSON directly in your browser.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to Unicode text locally.
URL Encoder / Decoder
Encode or decode URL components without sending your data to a server.
UUID Generator
Generate random UUID v4 values directly in your browser.
Unix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds and local date-time values in both directions.