Dato Claro · CSV and Excel
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Analyze CSV, JSON and Excel for free · Dato Claro
dato claro
Ready to explore

DATA STUDIO

Turn data into a visual story.

Paste a table, choose a view and find what matters in seconds.

rows in focus

INTRODUCTION · DECOUPLED DATA ENGINE v1.0

Decoupled data engine

declarative pipeline

What is it?

Analysis application with a declarative pipeline. Intent is converted into a plan (queryPlan) before processing or rendering.

duckdb-sqlresident
1,570memory
6tiles
256rows / window

Does not load everything into RAM.

WHAT IT CAN DO

  • Generate 7 ready-to-share formats: SVG, CSV, Arrow, Parquet, Excel, PDF/A-3, and DuckDB.
  • Embed legal metadata (author, copyright, and license) in each file.
  • Create nested meta-libraries: lib:// → metadata → program/page.
  • Work offline with MHTML/WARC bundles embedded within the PDF.
  • Send any artifact to print from the browser or server (CUPS/Windows).
  • Keep rows private in the browser; only upload aggregated metrics if you enable AI.
  • Weigh less than 10 MB in resident memory despite handling artifacts of 19 MB or more.

WHAT IT CANNOT DO

  • Cannot execute code from a remote library without validation: prevents RCE.
  • Cannot send your original rows to AI or third parties: only aggregates.
  • Cannot print without an installed driver or user confirmation in the browser.
  • Cannot guarantee 100% identical printing in SVG with complex filters: use PDF for that.
  • Cannot function as a real-time collaborative editor: it is a deferred pipeline, not a socket.
  • Cannot be used commercially with third-party ads without a commercial license (PROPRIETARY).
  • Cannot bypass trademark (IMPI) or author (INDAUTOR) registration: you need a process to sue.
  • Cannot convert Arrow larger than 1 GB to Excel: the Excel limit is approximately 1 million rows.

01

Bring your data

CSV, TSV, JSON, Excel, and Line-delimited JSON
Drop a file here or choose a file from your device

Local processing by default: your files are read in this browser. No macros or code are executed; optional AI only receives aggregated metrics.

02

Read code without executing it

Inspect code in an isolated Web Worker and compare it against a uniform BSS representation.

read-only
Drop a code file Not imported, compiled, or executed

03

Local AI reasoning

Connect Ollama on your machine to coordinate summary, analysis, optimization, and verification without sending code to an external service.

Ollama · optional

The browser only calls your Ollama server. This feature is optional and requires Ollama to be installed and to allow CORS.

Connect Ollama to activate the pipeline.

04

Ask for a view

Describe the chart in simple words. Interpretation happens locally.

05

Decoupled data engine

Intent is converted into a declarative plan with windows and memory budgets before processing or rendering.

    06

    Your overview

    07
    ARTIFACT LAYER

    Deliver your results

    Export the same analysis in seven formats: engine, human exchange, and offline delivery.

    v2.4 · local
    LIVE
    pipeline.memory1.570·pipeline.tiles 6·duckdb-sqlresident·query ready
    rows 0mem 0.0 MB

    SVG Chart

    vector · editable · current chart

    .svg

    CSV + frontmatter

    ejemplo.csv · UTF-8

    .csv

    Apache Arrow

    columnar · interoperable · local

    .arrow
    schema3 cols

    int64 id

    float64 monto

    date32 fecha

    Excel + metadata

    2 tabs · metadata

    .xlsx
    SummaryDetail

    Rows processed1.570

    Conversion rate23,4%

    Executive report

    PDF/A-3 · SVG · Arrow · offline

    FEATURED
    Artifactreport + embedded data
    Offlineno internet
    AccessView data · Arrow
    Includes chart, table, narrative and embedded offline files.
    More formats

    If you enable AI, only aggregated metrics are shared; your rows do not leave the browser nor are they used for training.

    JSON Manifest · traceability

    ready
    {}

    Verified privacy

    Rows remain in the browser. The report can save Arrow, SVG, MHTML, and the manifest inside the PDF/A-3.

    local processing · secure execution

    Visualization

    08

    Data profile

    local analysis

    Load data to see its quality and structure.

    09

    Display settings

    Customize the canvas without changing your data.

    dato claro Made to look better.
    Privacy and responsible use
    Local processing

    Your data is read and analyzed in this browser by default; it is not uploaded to a server. Optional AI receives only aggregated metrics.

    Clear limits

    To protect the device, files that are too large and executable formats are rejected.

    Your rights

    You can reset the view and delete saved state from Reset; content of large files is not preserved.

    Usage and license

    Free tool to explore your own data. Current analysis happens locally and does not send data to external models. Verify the licenses of the libraries you integrate.