File Comparator - Compare Files Online
Compare files and text online with side-by-side diff view. Free file comparison tool with syntax highlighting.
Keywords
file comparator, diff tool, text compare, file diff, code compare, text difference
Comparing files and code reveals regressions, merge mistakes, and unintended changes. This page presents a side‑by‑side diff so you can review modifications quickly and accurately.
What is a diff?
A diff computes the minimal set of edits necessary to transform one text into another—insertions, deletions, and modifications. Visual diffs highlight these operations line‑by‑line and, when possible, token‑by‑token to show precise changes in context.
How comparison works
Paste or upload two snippets or files. The tool performs a text diff locally and highlights changes with colors and symbols. You can switch languages for syntax highlighting, copy results, and download outputs to share in code reviews or bug reports.
About the File Comparator
Use it to double‑check refactors, review vendor updates, or investigate unexpected behavior. Clear diffs reduce cognitive load and help teams focus on logic rather than formatting noise.
FAQ
Can I ignore whitespace changes?
Whitespace‑only toggles can reduce noise when style changes dominate. Use your repository’s formatter to align styles and make diffs meaningful.
Does this detect moved blocks?
Basic text diffs don’t always track moved code. For structural moves, pair diffs with language‑aware tools or review commit history in your VCS.
Readable diffs improve collaboration and reduce bugs. Review small, frequent changes and automate formatting for the best results.