PDF Border Cleaner Guide

Open the app — PDF Border Cleaner Have you ever laid a book face down on a copier and scanned it? The lid can’t close, so everything around the book gets photographed too. Sometimes it comes out pitch black; sometimes gray, depending on the copier bed. On screen you shrug it off, but printing is another story. Filling that wide background eats through toner in no time, and the paper comes out damp. Print one 100-page document and you start resenting the cost of toner. ...

July 28, 2026 · Han · Software (32)

PDF Left-Right Splitter Guide

Open the app — PDF Left-Right Splitter Open a scanned classical text from a library and more often than not it was photographed with the book lying open. Two pages on one sheet. On paper that feels natural, but on a screen or a tablet the characters end up half size. The page numbers are half the real count too, so every citation needs arithmetic. This tool cuts such PDFs down the middle and separates them into single pages. It sounds simple, but in practice plenty of things get in the way. The cover is a single sheet yet gets sliced in half, vertically written books must be read right to left, and characters near the binding get cut off. Each of those has its own setting here. ...

July 28, 2026 · Han · Software (32)

PDF Page Editor Guide

Open the app — PDF Page Editor Sometimes you receive a 300-page collection when all you need is three pages. Other times you want to pull pieces from several files and bind them into one. Typing page numbers like 12-15, 47, 88-92 invites mistakes. Numbers alone don’t tell you what is actually on those pages. So this was built as a way to cut while looking. You drop dividers onto a horizontal bar and toggle green (keep) and red (remove). Up to five files can be loaded at once and bound into a single merged.pdf. ...

July 28, 2026 · Han · Software (32)

PDF Page Reverser Guide

Open the app — PDF Page Reverser Have you ever scanned a classical Chinese book? A right-bound volume reads from right to left, so feeding it into the scanner in order gives you a file that comes out backwards. The last leaf ends up as page 1. The same thing happens when a sheet feeder pulls pages from the back. The scan itself is fine — only the order is flipped — so there’s no reason to scan it again. ...

July 28, 2026 · Han · Software (32)

Real-time Collaborative Document Guide

Open the app — Real-time Collaborative Document You want to write meeting notes together during a meeting, but Google Docs asks everyone to sign in first. If even one person has no account, that’s where it stops. Asking people to create an account just to share a quick memo feels excessive too. With this tool, opening the address creates a new document on the spot. Share that address and you’re done. No sign-in, no registration. Several people can edit at once without overwriting each other. ...

July 28, 2026 · Han · Software (32)

Serial Slip Printer Guide

Open the app — Serial Slip Printer Say you need 500 numbered tickets for an event. Draw a table in a word processor and type a number into each cell, and somewhere around 100 your mind goes blank. Miss one along the way and everything after it shifts. This tool replicates the rest once you design a single cell. Write {n} in the text and the number climbs by one as the cells fill. Use it to print labels, raffle tickets, and number tags on A4 or B5. ...

July 28, 2026 · Han · Software (32)

Tag Converter Guide

Open the app — Tag Converter Have you ever done collation work on a classical text? That screen where the original is packed solid with <note>, <title>, <quote> and the rest. By the time the tags outnumber the characters, the actual text stops registering. Strip the tags, though, and you lose the structure. What you need isn’t to remove the tags but to see them less intrusively. This tool turns tags into color, font size, and underline. Instead of the literal word <note> you get small grey type; a title becomes large bold type. The source stays as it is and only the display changes, so you can review and fix in the same place. ...

July 28, 2026 · Han · Software (32)

When-Meet Guide

Open the app — When-Meet “Let’s get together next week” — you drop that in the group chat and the real work begins. One person can’t do Tuesday, another only Thursday evening, a third hasn’t replied at all. By the time you’ve scrolled up and down counting who said what, you’re back to counting from the start. With this tool you set a few candidate times and hand out one address. Everyone ticks what works, and the host’s screen collects it into a table. The date that suits the most people simply surfaces. ...

July 28, 2026 · Han · Software (32)

Notepad++

In Korea, most people write documents using the Hangul program (hwp). Reports or plans that need to follow specific formats and contain various data should be created in Hangul or Word. But do you really need to use paid programs even for simple text documents like diaries or to-do lists? Notepad++ is a great program to use in such cases. The reason people already use it so much isn’t simply because it’s free. Give it a try - think of it as an experiment. For general use, it’s an extremely powerful text editor! ...

October 30, 2025 · Han · Software (32)

Fotoo Digital Photo Frame

Fotoo is an Android app that beautifully displays various photos. Connect photos from various sources and a nice digital photo frame is instantly created. Do you feel uncomfortable with awkward silence when you’re with parents, children, or family and relatives? In those moments, start a light conversation while looking at photos from the digital photo frame. We were young back then, the baby was so cute - with a word or two, you travel through time. Who knows? Maybe looking at a photo from 10 years ago will inspire you to actually travel to that place today? ...

October 29, 2025 · Han · Software (32)