About HongLife Tools

HongLife Tools (honglife.co.kr) is a free collection of small tools that make something you can download right away: merged PDFs, compressed photos, QR codes, spreadsheets, subtitle files and more. Its sister site, HongLife Calculators, handles money and date calculations.

How the tools work

Files are processed in your browser and never uploaded. Every tool runs as JavaScript on your own device. Photos, PDFs, spreadsheets and the text you type are not sent to our server or anyone else's.
Real files — spreadsheets contain working formulas, PDFs keep their original quality where possible, and images are saved in standard formats.
Honest limits — when a browser can't do something well (for example, scanned PDFs have no text to extract), the page says so.

A few tools need to reach the network by design: the OCR tools download language data, the speed test downloads a test file from this site, and the “is it down?” checker sends a small request from your browser to the sites you pick. Your files and text are still never uploaded.

Before you rely on a result

Results are provided as-is for convenience. Double-check anything important before you submit, print or sign it.

Open-source software we use

SheetJS (Apache-2.0), pdf-lib (MIT), PDF.js (Apache-2.0), JSZip (MIT), qrcode-generator (MIT), heic2any (MIT), Tesseract.js (Apache-2.0), ONNX Runtime Web (MIT), the U²-Net background-removal model (Apache-2.0), emojibase (MIT), Unicode CLDR emoji names (Unicode License), and the Noto Sans and Noto Serif fonts (SIL OFL 1.1). Thank you.

Contact

Found a mistake or want a new tool? Let us know through the HongLife feedback page.