Apply a patch
Combine the exact original file with its matching .xdelta patch to create the patched output.
Browser-based xdelta patcher
Xdelta Patcher Online — Apply or Create Xdelta Patches
Xdelta Patcher Online applies or creates xdelta patches directly in your browser with no installation. Selected files are processed locally on your device. For the most reliable experience, use files under 1 GB; for files above 1 GB, use the desktop Delta Patcher app.
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For the most reliable browser experience, use files under 1 GB. For files over 1 GB, the desktop app is recommended.
Apply an xdelta patch
Select the exact original file expected by the patch, then select the .xdelta file.
Create an xdelta patch
Compare a clean original file with your modified file to create a shareable .xdelta patch.
Two browser workflows
What Xdelta Patcher Online does
Choose the task that matches the files you have. The browser engine runs both workflows locally on this device.
Create a patch
Compare a clean original with a modified file to produce a shareable .xdelta patch.
Browser or desktop Delta Patcher?
Online
Quick browser use with no installation. Best for files under 1 GB and occasional patching.
Desktop
Recommended for files above 1 GB, very large jobs, unsupported browsers, and repeated native workflows.
Download Delta PatcherSupported input behavior
Apply accepts a .xdelta file or a ZIP containing one, plus the original source file. The suggested Apply output preserves the source extension. Create compares the original and modified files and always saves a .xdelta patch.
Local file processing and privacy
Selected file contents are processed locally for patching and are not uploaded. The site may send coarse GA4 operational events such as mode, outcome, size bucket, extension category, locale, duration, ZIP use, and engine version. Filenames, file contents, local paths, output names, and detailed error text are not sent.
Quick start
- Choose Apply or Create.
- Select the required source and patch or modified file.
- Review the output name, run the operation, then save or discard the result.
Online patcher questions
Do I need to install Delta Patcher?
No. This page runs the xdelta engine in a supported browser. Use the desktop app when the browser is unsupported or the job is very large.
Are my files uploaded?
No. The selected file contents are processed locally on your device for patching.
Can I create xdelta patches online?
Yes. Create mode compares an original file with a modified file and produces a .xdelta patch.