Online CSV Tools for Data Cleaning & Transformation
Need to fix a CSV before it breaks an import or ruins a report? This CSV Tools category focuses on common data-wrangling actions—filtering rows with simple conditions, removing duplicate records, splitting large files into smaller chunks, and validating structure when column counts don’t match across rows. It also supports practical conversions such as CSV to JSON for API payloads, test fixtures, and application configs that expect structured objects rather than plain tables. Validation features help catch inconsistent delimiters, quote handling issues, encoding problems, and optional schema/type rules (like int, float, bool, or date formats) before data is shared or imported downstream. When multiple exports need to become one dataset, merge/join tooling supports combining CSV files on common columns so separate sources can be brought together for analysis. Typical use cases include cleaning CRM exports, preparing analytics extracts, and standardizing files for teammates who use different tools or locales. In WizardOfAZ, these utilities are aimed at quick, task-specific fixes so CSV data becomes predictable and reusable without switching to heavier software.
19 tools available
Convert & export CSV
Use this section when you need to change formats or separators so a CSV works in a different tool, pipeline, or importer.
Validate & standardize data
Use this section to catch structural issues, remove duplicates, and make fields consistent before importing into a database, BI tool, or spreadsheet model. CSV Validator is described as a browser-local tool for validating CSV structure (and optional rules), aimed at catching issues early in analytics/reporting workflows.
Combine & split datasets
Use this section when you need to join two tables by key, or split one file into smaller outputs for easier processing and sharing. CSV Merge Join supports inner/left/right/outer joins on one or more key columns, including using column names when headers are enabled.
Filter & organize tables
Use this section when you’re preparing a “working subset” of a CSV—keeping only the rows you need, ordering them, and adding helper columns for analysis or export.
All Tools
Privacy-first processing
WizardOfAZ tools do not need registrations, no accounts or sign-up required. Totally Free.
- Local only: There are many tools that are only processed on your browser, so nothing is sent to our servers.
- Secure Process: Some Tools still need to be processed in the servers so the Old Wizard processes your files securely on our servers, they are automatically deleted after 1 Hour.