CSV Utilities & Converters
Browser-native tools to convert, clean, format, inspect, and diff CSV and TSV datasets. Fast, secure, and 100% private.
CSV to Excel Converter
Convert CSV and TSV files into styled Microsoft Excel (.xlsx) workbooks with delimiter and encoding options.
Open tool →CSV Cleaner & Formatter
Remove duplicate rows, trim whitespace, eliminate empty rows/columns, and repair unescaped quotes.
Open tool →CSV Table Viewer
Interactive in-browser spreadsheet table reader with column sorting, live search filtering, and summary statistics.
Open tool →CSV Diff & Compare
Compare two CSV files side by side with cell-level change highlighting, added/removed row tracking, and export.
Open tool →CSV Column Filter & Reorder
Select, rename, reorder, or drop specific columns and apply conditional row filters to large datasets.
Open tool →CSV Merge & Combiner
Combine multiple CSV files by appending rows vertically or merging side-by-side on a common primary key.
Open tool →CSV to JSON Converter
Transform tabular CSV rows into structured JSON arrays of objects or 2D arrays with automatic type detection.
Open tool →JSON to CSV Converter
Flatten nested JSON objects, API responses, or document arrays into downloadable CSV or Excel tables.
Open tool →CSV to Markdown & SQL
Generate GitHub-flavored Markdown tables, clean HTML tables, and SQL CREATE TABLE / INSERT INTO statements.
Open tool →Why client-side CSV processing matters
Comma-Separated Values (CSV) is the universal interchange format for data science, accounting, customer lists, and web applications. However, handling confidential sales reports, proprietary subscriber lists, or database backups through online converters often exposes your files to cloud leak vulnerabilities.
DailyUtils executes all text parsing, character encoding conversions, and record transformations in browser memory. Whether you need to strip blank lines, reorder columns, or convert raw CSV into interactive tables, your data never leaves your computer.
Frequently asked questions
Are my CSV files uploaded to any server?
No. Every delimiter parse, regex cleaning, row deduplication, and transformation happens entirely inside your web browser. No data ever leaves your device.
Can this handle large CSV files with multiline quotes and commas?
Yes. The parser strictly adheres to RFC 4180 rules, correctly managing escaped quotes, commas inside quoted cells, and multi-line cell values.
Can I convert CSV into styled Excel (.xlsx) files?
Yes. Our CSV to Excel tool converts raw delimited text into valid OpenXML .xlsx files with styled headers, custom sheet names, and automatic number formatting.
Can I diff two CSV files to spot differences?
Yes. The CSV Diff tool displays added rows in green, removed rows in red, and modified cells in amber with clear visual side-by-side comparison.