# ETL

Browse 10 ETL tools for processing, converting, validating, and managing ETL data in your browser. Text inputs are not stored, and uploaded files are deleted after 6 hours.

> Canonical page: https://elysiatools.com/en/tags/etl

## Overview

Use this collection of 10 ETL tools to process, convert, validate, and manage ETL files and data through a browser-based interface without installing software.

## Frequently asked questions

### What can I do with ETL tools?

You can process, convert, validate, and manage ETL files and data using tools in this category.

### Do I need to install software to use these ETL tools?

No software installation is needed. You can operate the tools through your browser while processing runs on Elysia Tools servers.

### How is my ETL data handled?

Text inputs are not stored. Uploaded files are automatically deleted after 6 hours, and processing runs on Elysia Tools servers.

## Tools

- [CSV Header Alias Resolver](https://elysiatools.com/en/tools/csv-header-alias-resolver): Map messy CSV headers onto a clean target schema. Paste a CSV whose first row holds inconsistent column names (Customer ID, user_id, customerId, CUST_ID…) plus your target schema (one column per line) and an optional "alias=target" dictionary. Each source header is resolved through four layered passes — exact, dictionary, normalized (strips case/accents/separators/camelCase), then fuzzy edit-distance — and shown in a mapping table with method and confidence, plus target coverage and an optional normalized CSV export.
- [CSV Malformed Row Surgeon](https://elysiatools.com/en/tools/csv-malformed-row-surgeon): Surgically repair malformed CSV rows one at a time: unescaped (stray) quotes, mixed delimiters (tab/semicolon/comma in the same file), BOM-prefixed headers, CRLF/CR line endings and trailing empty lines. The surgeon parses tolerantly, shows a row-level red/green diff of every change it made (before → after, with the repair reason tagged), lists the rows it accepted unchanged, and emits the cleaned CSV. Optional AI repair can review suspicious rows after the deterministic pass. It complements the CSV Validator (which only reports problems) by actually fixing the damaged rows.
- [Foreign Key Validator](https://elysiatools.com/en/tools/data-foreign-key-validator): Validate foreign key relationships between multiple datasets. Perfect for checking data integrity, finding orphaned records, and ensuring referential consistency across related tables. Features: - Validate foreign key relationships - Find orphaned records - Check referential integrity - Support multiple key formats - Cross-table validation - Missing key detection - Duplicate key analysis - Relationship mapping Common Use Cases: - Database integrity checks - Data migration validation - ETL process verification - Referential consistency checks - Data quality assurance - Relationship analysis
- [JSON Data Lineage Tracer](https://elysiatools.com/en/tools/json-data-lineage-tracer): Trace JSON field paths, derived dependencies, and transformation history to build a field-level lineage graph
- [XLSX Append Incremental](https://elysiatools.com/en/tools/xlsx-append-incremental): Append new rows incrementally and emit next processing cursor based on time or primary-key column
- [XLSX Parquet Exporter](https://elysiatools.com/en/tools/xlsx-parquet-exporter): Export worksheet data to Parquet and/or NDJSON for data lake and data warehouse pipelines
- [XLSX S3 Batch Processor](https://elysiatools.com/en/tools/xlsx-s3-batch-processor): Batch process XLSX files in S3-compatible object storage with filtering/cleaning and upload processed outputs back
- [XLSX SQL Insert Generator](https://elysiatools.com/en/tools/xlsx-sql-insert-generator): Read Excel headers and rows to generate SQL INSERT statements for bulk loading
- [XLSX Unpivot Normalizer](https://elysiatools.com/en/tools/xlsx-unpivot-normalizer): Unpivot wide tables (e.g., month columns) into normalized long-form records for database ingestion
- [XLSX Workbook Merger](https://elysiatools.com/en/tools/xlsx-workbook-merger): Merge multiple similarly structured workbooks as multiple sheets or append all rows into one sheet

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