Ruby Diff Checker
Paste two versions of Ruby code to compare additions, removals and edited lines with Ruby syntax highlighting. The diff runs locally in your browser.
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Ruby syntax locked
This page automatically highlights Ruby tokens, so you do not need to pick a language before comparing files.
Private local compare
The diff runs in your browser. Source code, API payloads and configuration files are not uploaded to a server.
Split or unified review
Use split view for side-by-side review, unified view for compact patches, and hide unchanged lines for large files.
Compare Ruby files online
This Ruby diff checker is built for developers who need a fast, private way to compare code and configuration changes. Paste two versions, run the comparison, and review additions, removals and inline edits with Ruby syntax highlighting already enabled.
Paste or upload the original Ruby file on the left.
Paste or upload the changed Ruby file on the right.
Compare the result in split or unified view, then hide unchanged lines when you only need the edited regions.
Private browser-based Ruby comparison
The diff runs locally in your browser, which keeps source code, API responses, secrets and configuration files on your device. One recent session may be stored in your browser storage for restore, and you can clear it from the tool at any time.
Common Ruby diff workflows
Review method, block and module edits.
Check gemspec or Rake task changes.
Ruby syntax highlighting
Highlighting is locked to Ruby on this page, so the language selector stays out of the way. The parser focuses on tokens such as classes, modules, blocks, symbols while the diff engine highlights the actual text changes.
.rb, .rake, .gemspec
Reference: Ruby documentation
Ruby diff checker FAQ
What is a Ruby diff checker?
A Ruby diff checker compares two versions of Ruby content and highlights added, removed and edited lines. This page locks syntax highlighting to Ruby, so language tokens are easier to scan while reviewing changes.
Does this Ruby diff tool upload my code?
No. The comparison runs in your browser. Your Ruby files are not uploaded to a server when you click Compare.
Which Ruby file types can I compare?
You can paste or upload plain-text files such as .rb, .rake, .gemspec. Any text file can be compared, but this page highlights Ruby syntax automatically.
Can I compare large Ruby files?
Yes. Large comparisons run in a background worker so the browser stays responsive. Very large files may still take a few seconds on your device.