Join Two CSVs
Result
About This Spell
With a wizard's whisper, Join two CSV datasets on one or more key columns. Supports inner, left, right, and outer joins. When headers are enabled, keys can be column names; otherwise, use 1-based indexes.
How to Cast the Spell
- Paste Left and Right CSVs.
- Choose header, delimiter, and join type.
- Enter join keys (names or 1-based indexes).
- Click Join to generate the merged CSV.
Privacy-first processing every time
WizardOfAZ tools do not need registrations, no accounts or sign-up required. Totally Free.
- Local only: There are many tools like Text tools, some CSV tools, List tools etc. that are only processed on your browser. Data and Documents are transformed on your machine, so nothing is sent to our servers.
- Transparent progress: Watch the processing banner appear as soon as work begins and know exactly when it completes.
- Clear safeguards: Every tool links directly to our privacy policy and has been reviewed for accessibility.
- Secure Process: Some Tools need to be processed in the servers so the Old Wizard processes your files securely on our servers, keeping them for up to 1 hour so your tool can finish its work—after that, they are automatically deleted after 1 Hour.
“The wizard does everything I need. I can merge sensitive PDFs without a second thought.”
— Morgan, legal operations lead
What is CSV Merge Join?
CSV Merge Join is a free data wrangler from WizardOfAZ. Use it to merge tabular datasets into a single download as part of your analytics and reporting, without installing extra software.
Popular ways to use CSV Merge Join
- Streamline analytics and reporting by using CSV Merge Join to merge tabular datasets into a single download.
- Share deliverables faster—processed tabular datasets are ready for download in seconds.
- Combine CSV Merge Join with other WizardOfAZ tools to keep complex workflows in one browser tab.
Examples and workflow tips
- Upload a sample file, cast the spell to merge tabular datasets into a single download, and download the processed result instantly.
- Bookmark the CSV Merge Join in your browser so recurring tasks stay only one click away.
- Share the spell with teammates who need a quick, no-install way to merge tabular datasets into a single download.
Frequently asked questions
Is the CSV Merge Join secure?
Yes. The CSV Merge Join runs entirely in your browser, which means your spreadsheets never leave your device.
What can I do with the CSV Merge Join?
You can analytics and reporting by processing tabular datasets without uploading them to an external service.
Can I use CSV Merge Join on mobile?
Yes. WizardOfAZ tools are responsive, so you can launch the spell on desktops, tablets, or phones without installing extra apps.
Related tools to explore
Expand your toolkit with other WizardOfAZ spells that complement CSV Merge Join:
- CSV Deduplicator — Use it to work with CSV files using flexible options.
- CSV Filter — Use it to work with CSV files using flexible options.
- CSV Sampler — Use it to work with CSV files using flexible options.