tool.ren

Folder Compare & Sync Planner

Compare two local folders by relative path, size, timestamps, and content. Identify additions, missing files, changes, and renames, then export a plan that is never executed automatically.

Directory enumeration, reads, hashing, and comparison run in a local Worker. Paths, hashes, and contents are never uploaded.
A standard directory handle is unavailable here, so a compatible directory file picker will be used.

Left folder

0

0 files selected; 0 remain after filtering

Right folder

0

0 files selected; 0 remain after filtering

Comparison rules

Choose left and right folders, then compare them to see differences.

About Folder Compare & Sync Planner

Compare two local folders and build a reviewable sync plan. Compare two local folders by relative path, size, timestamps, and content. Identify additions, missing files, changes, and renames, then export a plan that is never executed automatically. The core workflow is designed to run in your current browser.

Key capabilities

  • Standard directory handles with a webkitdirectory fallback
  • Accurate mode uses samples, full BLAKE3, and byte verification
  • Detect rename candidates when identical content has different paths
  • Create a plan without writing, moving, overwriting, or deleting files

Useful for

  • Check whether a working folder and backup agree
  • List missing files and conflicts before migration
  • Compare two build artifacts or release directories

Frequently asked questions

Is Folder Compare & Sync Planner free to use online?

Yes. Folder Compare & Sync Planner opens in a modern browser and does not require desktop software installation.

What is Folder Compare & Sync Planner useful for?

Common use cases include Check whether a working folder and backup agree; List missing files and conflicts before migration.

Is my input or file uploaded?

The core processing workflow is designed to run locally in the browser. Key capabilities include Standard directory handles with a webkitdirectory fallback, Accurate mode uses samples, full BLAKE3, and byte verification, Detect rename candidates when identical content has different paths; account, comments, and anonymous analytics may still create normal site requests.

Comments

0 comments

Sign in to comment
AAccount

Sign in to comment and reply.

Sign in
No comments yet. Be the first to leave feedback.

ToolRen Online Toolkit © 2026