Spreadsheets & data · ONLINE TOOL

Compare & reconcile data

One workspace to compare versions, enrich A with B, or reconcile rows despite differences. Free + advanced Pro controls.

Local processingNo account required

USE CASES

When to use Compare & reconcile data?

Central workspace for two CSV/Excel files: compare versions, enrich A with B, or reconcile records despite differences. Reconcile remains free for exact/fuzzy keys and adds Pro multi-criteria rules, ambiguity handling, 1→N/N→1 and reports.

Compare two extracts then enrich the new version without reloading files
Reconcile invoices and payments with amount/date tolerances
Review two reference datasets and clearly document exceptions

CONCRETE EXAMPLE

Two business exports

Sample file

BEFORE

A and B loaded into separate tools depending on the task

→

AFTER

One workspace: Compare Δ · Join ＋ · Reconcile ⇄ · files and keys preserved across modes

PRIVACY

Your data stays in the browser

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Limitations to know

Compare requires a unique key per version; Join requires a unique key on B.
A probable or grouped reconciliation remains a suggestion to validate against business/accounting rules.
Use Smart Semantic Matcher for meaning-based matching and Data Relationships for mapping 3+ tables.

HOW IT WORKS

A straightforward workflow.

1Prepare the required input and choose useful options.
2Review previews, warnings and limitations before export.
3Download a new copy or report: the original stays unchanged.

PRIVACY

Frequently asked questions

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.