Fractalic Studio Browser-only diff

Private Diff Compare

Compare text, code, JSON, Markdown, and local files inside this browser tab. No backend, no storage, no analytics on this page.

View
Comparison

Original

Paste text, or drop a local file.

Changed

Paste text, or drop a local file.

0 Added lines
0 Removed lines
0 Changed pairs
0 Unchanged
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Result

Paste text or load two files to compare.

No comparison yet.

Closing this tab ends the session. Local export downloads a file only when you press an export button.

Private Browser-Based Diff Tool for Text and Code

Private Diff Compare is a free browser diff checker for developers, writers, operators, and teams that need to compare sensitive text without uploading it. It supports code snippets, JSON, Markdown, logs, CSV, HTML, CSS, Python, shell scripts, and other text-based files.

Private by default

Text and files stay in the active browser tab. There is no account, backend processing, cloud storage, cookie-based session, or analytics script on this tool page.

Built for code review

Use side-by-side or unified diff, highlight changed words inside a line, format JSON, ignore whitespace, and export a local patch when you need to share the result.

Fast local workflow

Paste text, load files, or drag files into the page. The comparison updates in the browser and the session is gone when the tab closes.

Common Use Cases

  • Compare two versions of source code before committing changes.
  • Find differences between JSON payloads, API responses, and configuration files.
  • Review Markdown, documentation, release notes, and prompt revisions.
  • Check log, CSV, YAML, HTML, CSS, Python, shell, and plain-text changes.
  • Generate a unified diff patch locally without installing a desktop app.
  • Compare confidential text where uploading to a server is not acceptable.

Machine-Readable Summary

Tool type
Browser diff checker
Data flow
Local tab memory
Primary formats
Text, code, JSON, Markdown
Price
Free

Private Diff Compare FAQ

Does this diff tool upload my files or text?

No. The comparison runs in the browser tab. The page does not send your text, code, or local files to a backend service.

Can I compare JSON files?

Yes. The tool can format valid JSON before comparison, which makes structural changes easier to review.

What is the difference between side-by-side and unified diff?

Side-by-side diff shows the original and changed content in parallel columns. Unified diff shows additions and removals in a patch-style format.

Can I download the diff?

Yes. You can copy or download a unified .diff patch, or download a local HTML report generated by the browser.