Private by default
Supported files are processed on your computer instead of being uploaded to a remote processing server.
FREE WORK UTILITIES
Small file tools.
Zero upload anxiety.
Merge PDFs, clean spreadsheets and convert files directly in your browser. Fast, simple and built for everyday office work.
Browse toolsNo account · No server upload · Free
LOCAL PROCESSING
Your files stay on your device.
Most Utilumi tools run entirely inside your browser. Your documents do not need to be sent to our server to be processed.
5launch tools
0accounts needed
100%browser based
TOOLBOX
Get the boring file task done.
Start with the tools people use repeatedly at work. More utilities will be added only when they solve a real workflow problem.
PDF+
Merge PDF
Combine multiple PDF files into one document in your browser.
Open tool →1-3Extract PDF Pages
Select page ranges and create a new PDF without uploading your file.
Open tool →IMGImage to PDF
Turn JPG or PNG images into a single PDF file.
Open tool →XLSMerge Excel Workbooks
Collect sheets from multiple Excel files into one workbook.
Open tool →≠Remove Duplicate Rows
Remove repeated rows from Excel or CSV files and download a clean workbook.
Open tool →WHY UTILUMI
Useful before clever.
No sign-up friction
Open the tool, finish the task and download the result. No account is required for the launch tools.
Built around work
We focus on repetitive PDF, spreadsheet and file-cleanup tasks rather than adding novelty features.
HOW IT WORKS
Browser-based file processing explained
Traditional online file tools often upload documents to a server, process them there and send a result back. Utilumi takes a different approach for the tools that can run locally: modern browser APIs and JavaScript libraries read the file on your device and create the output in the same browser session.
This architecture can be especially useful for routine office files because it removes an unnecessary network transfer. It also means performance depends partly on your device and browser, so very large documents may take longer or exceed available memory.
Utilumi is not intended to replace professional document management, records retention, security or compliance systems. For regulated, confidential or mission-critical workflows, always follow your organization's approved tools and policies.