Updates
Tool releases and updates.
Percentage calculator
Calculate percentages, percentage changes and increases or decreases from a starting value.
Discount calculator
Calculate sale prices, percentage discounts or original prices.
Online stopwatch
Measure elapsed time, record laps and copy lap times.
Countdown timer
Set a countdown, pause and resume it, and turn the end-of-timer sound on or off.
Image compressor
Image compression with English and Japanese controls, format guidance and examples.
Merge PDF files
Merge PDFs with English and Japanese controls and a guide to checking document order.
HEIC to JPG
Convert a HEIC or HEIF photo to JPG, adjust the quality and preview the result. Includes English and Japanese instructions.
Split a PDF
Extract selected pages, split a PDF into ranges or save each selected page separately, with English and Japanese controls and examples.
JPG and PNG to PDF
Combine JPG and PNG images into one PDF. Arrange and rotate images, choose a page size and read the guide in English or Japanese.
PDF to JPG
Convert PDF pages to JPG images, choose the resolution and download images individually or as a ZIP. Includes English and Japanese instructions.
Image crop and resize
Crop and resize images. Choose an aspect ratio, adjust the crop and set the output dimensions.
Merge images into one file
Join images horizontally or vertically, arrange their order and adjust the spacing.
Add a text watermark to an image
Add a text watermark to an image and adjust its position and appearance before downloading.
Pixelate or cover part of an image
Apply pixelation or a solid fill to selected image areas. Check the exported image before sharing it.
Pick colors from an image
Pick a color from an image and copy its color values.
Pixelate an image
Give an image a pixelated look and preview the result before saving.
Extract text from an image
Extract printed Chinese or English text from an image, edit the result and copy it or save it as a text file.
Make a photo collage
Arrange multiple images into a collage and adjust the layout before downloading.
Split an image into tiles
Split an image into a grid and download the resulting pieces.
Make a GIF from images
Turn a sequence of still images into an animated GIF, with control over frame order and timing.
Turn a sprite sheet into a GIF
Convert a sprite sheet into an animated GIF. Set the frame grid and check the animation.
PDF page organizer
Reorder, rotate or remove PDF pages, then save the revised document.
Add a text watermark to a PDF
Add a text watermark to PDF pages and check the result before saving.
Count words and characters in your text
Count characters, Han characters and English words, check line and paragraph totals, and compare text with a custom limit. The guide now clarifies how text in other languages using Latin letters is counted.
Compare text line by line
Compare two text versions line by line. Review added, removed and unchanged lines, then copy the report.
JSON formatter and syntax validator
Validate JSON, format or minify it, and copy or download the result. Parsing errors include a localized explanation.
QR code generator
Create a QR code from text or a URL, then download it as PNG or SVG.
Generate a random password
Generate a random password with your chosen length and character types, then copy it. Passwords are generated in your browser. The guide clarifies NIST's guidance on length and character rules for password services.
Unix timestamp converter
Convert between Unix timestamps and dates, choose seconds or milliseconds, and check the result in your selected time zone.