The Tool Desk
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What Looker Studio does
Looker Studio is Google’s no-cost online tool for turning data into customizable reports and dashboards. Its drag-and-drop editor supports charts, tables, viewer filters, date-range controls, and connections to different data sources. See Google’s overview of Looker Studio.
A report displays data supplied through one or more data sources. A data source is the configured connection between a report and data in an external platform or product. Google describes it as “a conduit between the data in an external platform or product, such as a database or spreadsheet, and the charts and controls in a Looker Studio report.” It also provides the fields, or schema, available to report editors. For example, a source could be a particular Google Sheets file, Google Analytics property, or BigQuery table. Google explains data sources and how editors can model fields with calculated fields and parameters.
Create your first report
Google’s new-report tutorial demonstrates the workflow with a sample Google Analytics 4 (GA4) Google Merchandise Store source. You can follow the same steps with a source you have permission to use.
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- Sign in to Looker Studio and create a blank report.
- In the Add data panel, select an existing source or connect to a new one. For example, choose a Google Sheets connection and the file you want to report on, or use the sample source in Google’s tutorial.
- Add the source to the report. Looker Studio places a table on the canvas so you can see available data.
- Inspect the table’s fields and records. Use the properties panel to adjust the table and confirm that the fields you need are available.
- Add a chart suited to the question you want to answer, then configure its dimensions and metrics in the properties panel.
- Name the report and choose a layout. Pick freeform for precise desktop placement and sizing, or responsive when the report needs to adapt across screen sizes.
The connector is the mechanism for accessing a platform; the data source is the configured instance that exposes its available fields to the report. Field types and source configuration affect which data you can use, so inspect the actual source rather than assuming every spreadsheet or account has the same schema.
Choose a chart that answers one question
Start with a question, then pick the simplest chart that makes its answer legible. Google’s tutorial builds from a table to bar and pie charts using a flight-delay example; the data and resulting values depend on the source connected. The following chart choices are practical starting points, not fixed rules.
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| Reader’s question | Useful starting point | What it shows |
|---|---|---|
| How does a metric change over time? | Time-series chart | Values across a date or time dimension. |
| Which categories have the largest values? | Bar chart | Relative values across categories. |
| What are the underlying records or exact values? | Table | Field-level detail for inspection or lookup. |
For instance, if a spreadsheet contains dates, product categories, and revenue, a time series can show revenue over time, while a bar chart can compare revenue by category. If you are unsure whether the fields are being interpreted as intended, begin with a table and verify the records before drawing conclusions from a chart.
Google also provides example reports that demonstrate features such as filter controls, data blending, running calculations, and layout. Treat them as follow-along models; your own results will depend on the data source and its fields.
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Charts present data; controls let viewers interact with it. Google says, “Controls let you interact with the data in the following ways:” including filtering dimension values, setting a timeframe, providing parameter values, or changing the dataset behind a data source. A control is different from a filter property used to restrict data before viewers see it. See Google’s guide to controls.
- Add a date-range control when viewers should be able to change the reporting period.
- Add a dimension filter when viewers need to focus on a category, such as a product or region.
- Use a parameter control only when the report is designed to let viewers supply a value that affects the report.
After adding a control, check that it changes the charts and tables it is meant to affect. If a control has no visible effect, check the chart’s data source and the relevant date or dimension fields, along with how the report’s components are configured.
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Choose a layout for the viewing device
Freeform and responsive layouts solve different presentation needs. Google describes freeform as offering precise control over placement and sizing for desktop, while responsive layout scales across screen sizes and is suitable when viewers will use tablets or phones. Choose based on how people will view the report, not just how it looks while you are editing. Details are in Google’s report tutorial.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Check access before sharing
Looker Studio reports can be shared with view or edit permissions. Report access and access to the underlying data are related but distinct: visibility can depend on the credentials configured for the data source. Google documents a scenario in which owner credentials let report viewers see data without direct access to the underlying BigQuery dataset. That is a specific configuration example, not a universal recommendation. Review Google’s guidance on sharing reports.
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- Give edit access only to people who should change the report.
- Confirm who can access the report and whether the data-source credentials are appropriate for its intended viewers.
- Check the report as a viewer, including whether its charts and controls display the expected data.
A practical first-report checklist
- Connect the intended source and verify its fields in the initial table.
- Write down the question the report should answer, then add a chart that matches it.
- Add only the controls viewers need, and confirm that they affect the intended components.
- Choose freeform or responsive based on the devices your audience will use.
- Set report permissions and review data-source credentials before sharing.
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