XLSX Tools - Online Spreadsheet Processing & Conversion

Access 44 online tools to process, convert, and manage XLSX spreadsheet files. Secure server-side processing with automatic file deletion after 6 hours.

Our XLSX tools allow you to perform complex spreadsheet operations, data conversions, and file manipulations directly from your browser. Whether you need to extract data, transform formats, or validate spreadsheet structures, these 44 tools handle the processing on our secure servers without requiring any local software installation.

44 Tools

Data & Tables
CSV / Excel Diff Tool
Compare two CSV or XLSX datasets and export a PDF report with row, column, and cell-level differences
Conversion & Encoding
CSV to Excel Converter
Convert CSV data to Excel format with customizable parsing and formatting options
Security & Validation
Excel Field-Level Decryptor
Decrypt specific fields in Excel files using various decryption methods to restore encrypted information
Security & Validation
Excel Field-Level Encryptor
Encrypt specific fields in Excel files using various encryption methods to protect sensitive information
Conversion & Encoding
Excel to CSV Converter
Convert Excel file to CSV format, extracting data from the first worksheet
Conversion & Encoding
Excel to HTML Table Converter
Convert Excel file to HTML table format, extracting data from the first worksheet
Conversion & Encoding
Excel to JSON Converter
Convert Excel file to JSON format, extracting data from the first worksheet
Conversion & Encoding
Excel to Markdown Converter
Convert Excel file to Markdown table format, extracting data from the first worksheet
Conversion & Encoding
Excel to XML Converter
Convert Excel file to XML format, extracting data from the first worksheet
Conversion & Encoding
Excel to .xlsx Converter
Convert .xls files to .xlsx format. Note: Only supports converting old .xls files to new .xlsx format.
Documents & PDF
LibreOffice XLSX to PDF Report
Convert Excel workbooks to multi-page PDF reports via LibreOffice and merge batch outputs
Conversion & Encoding
Text to Excel Converter
Convert various text formats to Excel with customizable parsing and formatting options
Conversion & Encoding
XLSX API To Sheet
Fetch JSON from REST or GraphQL API and write mapped records into an Excel sheet with automatic pagination
Conversion & Encoding
XLSX Append Incremental
Append new rows incrementally and emit next processing cursor based on time or primary-key column
Conversion & Encoding
XLSX Chart Embedder
Embed generated chart images into Excel workbooks using workbook data ranges for bar or pie chart reports
Conversion & Encoding
XLSX Column Mapper
Rename, reorder, and drop Excel columns with alias matching and case/whitespace normalization
Conversion & Encoding
XLSX Conditional Formatting Rule
Batch-apply conditional formatting rules such as threshold highlights, data bars, and color scales to Excel worksheets
Conversion & Encoding
XLSX CSV Batch Converter
Batch convert CSV/TSV to XLSX or convert XLSX back to CSV/TSV with delimiter and encoding handling
Conversion & Encoding
XLSX CSV Detect Normalize
Auto-detect CSV delimiter/encoding (UTF-8/GBK), normalize the table, and import to XLSX/CSV
Conversion & Encoding
XLSX Data Validation Dropdown
Batch-create dropdowns, dependent cascading dropdowns, and input prompts in Excel workbooks using data validation rules
Conversion & Encoding
XLSX Dedicated Index Sheet
Generate an index sheet for workbook with links to each sheet and core statistics
Conversion & Encoding
XLSX Dynamic Report Builder
Programmatically build dynamic Excel reports with multi-level merged headers, grouped subtotal, and dynamic columns
Conversion & Encoding
XLSX Formula Injector
Fill formulas down worksheet columns and optionally lock formula cells for protected, template-friendly Excel workbooks
Conversion & Encoding
XLSX Freeze Pane Manager
Freeze top rows/left columns automatically and apply row or column outline groups for easier spreadsheet reading
Conversion & Encoding
XLSX HTML Table Preview
Render an Excel range to HTML table for web preview with merged cells and basic background colors
Conversion & Encoding
XLSX Invoice Generator
Generate professional invoice/quotation workbooks with auto totals, tax calculations, and company logo embedding
Conversion & Encoding
XLSX JSON Transformer
Bidirectional conversion between JSON arrays and Excel sheets, with nested object flattening and restoration
Conversion & Encoding
XLSX KPI Dashboard Generator
Generate a KPI dashboard workbook with metric cards, trend table, and conditional warning formatting
Conversion & Encoding
XLSX Markdown Table Exporter
Convert a selected Excel range or whole sheet into Markdown table format
Conversion & Encoding
XLSX Multi Sheet Splitter
Split a multi-sheet workbook into independent files by sheet name, with ZIP output
Conversion & Encoding
XLSX Multi-Tab Report Pack
Generate one workbook containing multiple report tabs: overview, details, anomalies, and dictionary
Conversion & Encoding
XLSX Named Range Injector
Create or update workbook-level named ranges so formulas, validations, and reusable templates can reference stable Excel names
Conversion & Encoding
XLSX Parquet Exporter
Export worksheet data to Parquet and/or NDJSON for data lake and data warehouse pipelines
Conversion & Encoding
XLSX Print Setup Pack
Apply paper, margins, scaling, repeating titles, and header/footer print settings to Excel workbooks in one pass
Conversion & Encoding
XLSX Range Extractor
Extract a specific sheet/range/named-range from Excel into JSON with coordinates or record objects
Conversion & Encoding
XLSX S3 Batch Processor
Batch process XLSX files in S3-compatible object storage with filtering/cleaning and upload processed outputs back
Conversion & Encoding
XLSX Sheet Theme Pack
Apply consistent colors, fonts, borders, and header styling to Excel sheets and export branded multi-theme reports
Conversion & Encoding
XLSX Sheet to CSV Pack
Export each Excel worksheet as an individual CSV file and include a manifest with schema/statistics
Conversion & Encoding
XLSX Sheet To JSON Schema
Infer JSON Schema from worksheet headers and sample rows with types, enum candidates, and basic constraints
Conversion & Encoding
XLSX Sparkline Injector
Inject Excel sparklines into worksheet cells by patching XLSX sheet XML with sparkline definitions
Conversion & Encoding
XLSX SQL Insert Generator
Read Excel headers and rows to generate SQL INSERT statements for bulk loading
Conversion & Encoding
XLSX Template Filler
Fill existing styled/formula Excel templates by replacing {{variable}} placeholders only
Conversion & Encoding
XLSX Unpivot Normalizer
Unpivot wide tables (e.g., month columns) into normalized long-form records for database ingestion
Conversion & Encoding
XLSX Workbook Merger
Merge multiple similarly structured workbooks as multiple sheets or append all rows into one sheet

Related Tags

Excel

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Access 52 online tools for Excel, XLSX, and XLS files. Convert, format, and process spreadsheet data securely without software installation.

Conversion

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Access 174 online conversion tools for files and data. Process formats securely on our servers with automatic file deletion after 6 hours.

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Convert between data structures and file formats including JSON, XML, CSV, and PDF. Secure server-side processing with automatic file deletion after 6 hours.

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Manipulate and convert XLSX files with 13 online ExcelJS tools. Server-side processing with automatic file deletion after 6 hours.

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Access 14 online sheet tools to convert, format, and process spreadsheet data. Secure server-side processing with automatic file deletion after 6 hours.

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Access 9 online XLS tools for spreadsheet processing and conversion. Secure server-side processing with automatic file deletion after 6 hours.

FAQ

How are my XLSX files processed?

Files are uploaded via your browser and processed on Elysia Tools servers. This ensures high performance for complex spreadsheet operations without consuming your local system resources.

Is my spreadsheet data kept private?

Yes. Text-based inputs are never stored, and all uploaded XLSX files are automatically and permanently deleted from our servers 6 hours after processing.

Do I need to install Excel or any plugins to use these tools?

No software installation is required. All tools are accessible through your web browser, allowing you to manage XLSX data on any device with internet access.