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Spreadsheets & data · ONLINE TOOL

Enrich one file with another

Join CSV/Excel with key coverage diagnostics, column selection, row provenance and separate exports for unmatched records.

Local processingNo account required
USE CASES

When to use Enrich one file with another?

Direct entry into Join mode of “Compare & reconcile data”: enrich A rows with B columns using a controlled key, then export CSV or XLSX.

  • Add department/category data from a reference file
  • Enrich an HR/CRM export with attributes from another file
  • Replace a one-off XLOOKUP/VLOOKUP without opening Excel
CONCRETE EXAMPLE

Orders + customer reference

BEFORE
orders.xlsx: customer_id, amount · customers.csv: customer_id, segment, region
→
AFTER
Selected B columns · key coverage · optional provenance · CSV/XLSX join + separate exception exports
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

  • The B key must be unique to avoid ambiguous joins.
  • Empty keys are never matched; duplicate B keys block the join until resolved.
  • Use Data Relationships to simulate cardinality and risk across multiple tables.
HOW IT WORKS

A straightforward workflow.

  1. 1Prepare the required input and choose useful options.
  2. 2Review previews, warnings and limitations before export.
  3. 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.

RELATED TOOLS

Continue the same workflow

⇄Compare & reconcile dataOne workspace to compare versions, enrich A with B, or reconcile rows despite differences. Free + advanced Pro controls.→DATA↔Audit relationships across data filesAudit multiple CSV/Excel files for likely keys, cardinalities, orphan rows, duplicates, join risk, projected row counts and SQL templates without raw values.→ΔCompare two data versionsCompare mode: CSV or Excel, added/removed rows, schema differences and changed values using a unique key.→MAPAdapt a file to a target templateFirst delivery: align Excel/CSV data to a target template, explain mappings and pass the approved format to a reusable data contract.→
WORKTOOLSET ACCOUNT

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Access your favorites and presets across devices.

or with email

Your documents are not stored in your account.

 WORKTOOLSET PRO

When work needs verification, explanation or evidence, Pro takes over.

AUDITAudit & verificationScores · priorities · recommendations
≈Reconciliation & local AIAmbiguity · exceptions · sources
SAFEPrivacy & QAPreflight · accessibility · sharing
PDFEvidence & reportsSHA-256 · manifest · CSV · JSON · PDF
Scale afterwards, when neededAI Workbench with local content analysis, universal production queue, specialized batch processing, recipes, workflows, Studio sessions and projects remain included in Pro.
100 presets · 50 projects · 20 templates · 500 favorites

Payments, taxes and invoices are managed by Paddle. Your documents are never part of payment data.
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