Can't open a file you were sent? Open it in your browser, without uploading it
Free tools that run entirely in your browser. Your files are not sent anywhere.
Your files stay safe — processed entirely in your browser. Nothing is uploaded.
Conversion Tools
Choose a tool to get started. All processing happens on your device.
What Is This File?
Drop any file and find out what format it is — and what opens it.
WebP to JPG/PNG
Convert WebP images to widely compatible JPG or PNG format. Adjust quality settings for the perfect balance.
HEIC to JPEG
Convert iPhone HEIC/HEIF photos to JPEG (JPG) or PNG so any computer can open them.
Open winmail.dat
Extract and view contents of winmail.dat email attachments from Microsoft Outlook.
Outlook MSG Viewer
Open .msg files from Outlook and pull out the attachments.
EML File Viewer
Open and view EML email files directly in your browser. View headers, body, and download attachments.
VCF/vCard to CSV
Convert VCF/vCard contact files to CSV format. View and export contacts for Excel and other apps.
Fix Mojibake
Detect the encoding of a garbled CSV or text file and save it so Excel opens it correctly. Paste garbled text to recover the original too.
Thumbs.db / .DS_Store Viewer
See what is inside the Thumbs.db and .DS_Store files that appear in folders on their own — leftover thumbnails and recorded file names — before you delete them.
Extract LZH / ZIP / 7z / RAR
Extract .lzh, .7z and .rar in your browser with no software to install, open password-protected archives, and recover ZIPs whose file names come out garbled.
Password-Protect a ZIP
Pick files, choose a password, and get an encrypted ZIP. Something Windows 11 cannot do on its own, done in your browser with nothing to install.
Open XDW (DocuWorks)
View DocuWorks .xdw and .xbd files without DocuWorks, and save them as PDF or text.
Open JTD (Ichitaro)
View Ichitaro .jtd documents without Ichitaro, and save them as Word, PDF or text.
Formats without a tool here (.pages, .dwg, .psd, .dat and others) are covered in the format-by-format guides.
Latest from the Blog
How to open files that will not open, and how the formats work.
How to Convert HEIC to JPEG for Free, and Whether You Need Software
Wanting a JPEG out of a HEIC often turns into a hunt for free software that dead-ends. The usual recommendations are only free for personal use, and the built-in Windows route has a paid half. Here is what each option really costs, and how to skip installing anything.
BasicsHow to Show and Change File Extensions on Windows and Mac
Windows and macOS hide file extensions by default, which is why a file 'with no extension' often has one you cannot see. How to turn them on, how to change one safely, and what changing it does not do.
ArchiveWhy a ZIP File Will Not Open, and How to Fix Each Cause
A ZIP that refuses to open has one of six causes: a truncated download, a password, a split archive, garbled names, a file that is not really a ZIP, or an archiver too old for it. How to tell which, and what to do about each.