JOIN Visualizer Online - Free Browser Tool

Join type

Tables

Join keys

Matching

Left table CSVCSV4rows·4left

Right table CSVCSV4rows·4right

join type: LEFT
left rows: 4
right rows: 4
matched left: 2
left only: 2
right only: 1
output rows: 5

Generated join SQLSQL

SELECT
  l.*,
  r.*
FROM users l
LEFT JOIN orders r
  ON l.user_id = r.user_id;

Tip: use samples, upload, copy, download, and send-to actions inside the workspace where available.

What is JOIN Visualizer?

JOIN Visualizer is a free, browser-based tool that helps you turn raw numbers into clear charts. Diagram inner/outer/left/right joins live. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

How to use JOIN Visualizer

1Paste your data or drop a CSV/JSON file.
2Pick the columns and chart type — the chart updates live.
3Open it fullscreen and export the chart as SVG or PNG.

Features

Multiple chart types with live preview
Export charts as SVG or PNG
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Drafting and checking queries without a database connection
Quick one-off visualizer jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Frequently asked questions

How do I use JOIN Visualizer?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Diagram inner/outer/left/right joins live.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is JOIN Visualizer free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Can I export the chart?: Yes — open the chart fullscreen and export it as an SVG (vector) or PNG (image) for slides, docs, or reports.

What is JOIN Visualizer?

Frequently asked questions

How do I use JOIN Visualizer?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Diagram inner/outer/left/right joins live.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is JOIN Visualizer free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Can I export the chart?

Yes — open the chart fullscreen and export it as an SVG (vector) or PNG (image) for slides, docs, or reports.