What files are supported?

Yes. iWeaver works with CSV, Excel, and table-style data you paste into the workspace.

Can I export cleaned data?

Yes. You can export cleaned data and structured output for downstream analysis, import, or script-based workflows.

Does it support non-English columns?

Yes. iWeaver can handle non-English column names and mixed-language content, though you should review field meanings before final export.

What are the free limits?

Yes. The free plan includes three uses per day. Higher plans are available if you need more runs.

It helps surface missing values, duplicates, and format issues, but you should still review the final table before import or analysis.

Do I need to sign up?

Yes. Signup is required before using iWeaver.

Data Cleaner for CSV, Excel, and Table Data

Upload CSV, Excel, or table data, then clean messy spreadsheet data, remove duplicates from dataset, and fix missing values in table data. Review structured output, export cleaned data, and reuse the cleaning workflow.

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Upload Files

How to Use Data Cleaner

Upload File

Upload CSV or Excel sheets, or paste table data from a workspace, so iWeaver can inspect the structure.

Check Issues

iWeaver profiles columns for missing values, duplicates, outliers, and format problems, then applies your chosen cleaning rules.

Export Results

Review the cleaned table, then export structured output or reuse the steps for later data cleanup workflows.

Why use a data cleaner for messy tables?

File Import

Import CSV, Excel, or pasted table data and inspect columns before cleanup. iWeaver highlights missing values, duplicates, and format issues so you know what needs attention.

Column Profiling

Profile column patterns, row structure, and data quality signals to understand where the table breaks. Use that context to choose targeted cleaning rules instead of guessing.

Rule Output

Apply standardization, deduplication, formatting fixes, and replacements across multiple columns in one pass. The result is consistent fields that are easier to analyze or import.

Batch Cleanup

Review changes step by step, adjust a rule, and rerun the cleanup without starting over. That makes iterative data wrangling easier for repeatable table work.

Reusable Export

Export cleaned data, structured output, or reusable steps for downstream analysis, BI, or scripts. iWeaver helps you keep a repeatable process instead of a one-off fix.

Use Cases for Data Cleaner

CSV Import

You have CSV exports with missing cells, duplicate rows, and mixed date formats before loading them into a CRM or warehouse. iWeaver reviews the table, flags problem columns, applies your rules, and exports cleaned records ready for downstream import and analysis.

Clean Now

Excel Standardization

Your Excel workbook contains inconsistent names, numbers, and timestamps across several columns, making analysis unreliable. iWeaver standardizes formats, renames fields, and returns a cleaned spreadsheet with consistent columns and exportable results for BI or database workflows and later hand-offs to teams.

Standardize

Duplicate Review

A report table contains repeated IDs, duplicate timestamps, and rows copied from multiple sources, so your metrics do not match. iWeaver helps identify duplicates, compare affected columns, and deliver a deduplicated dataset with reusable cleaning steps for auditing and reuse.

Review Duplicates

Time Series

A timetable or event log has unordered rows, missing intervals, and stray outliers that break downstream analysis. iWeaver sorts the table, handles inconsistent entries, and exports a structured dataset you can pass to BI, scripts, or databases directly afterward without friction.

Export Data

Data Cleaner FAQ

Start Cleaning Your Data

Use your three daily free runs to inspect columns, clean rows, and export structured output.

Start Cleaning