ReallyUseful.Tools

Free web browser tools

Privacy Friendly

Keep sensitive documents, images, and text on your device while you work. Check each tool page for its exact processing behavior.

Crop image

Crop an image online with a draggable crop box or choose Free, 1:1, 4:3, 16:9, or 2:3 proportions. Download the cropped result as a PNG.

Merge CSV files

Combine multiple CSV files into one in your browser. Rows are stacked and headers aligned by name.

Photo editor

Edit photos online with brightness, contrast, saturation, grayscale, 90° rotation, and horizontal or vertical flips. Download the edited image as a PNG.

CSV editor

Edit CSV cells in a spreadsheet grid in your browser. Add or delete rows, then download CSV or Excel.

CSV analyzer

Inspect a CSV for row and column counts, inferred types, and file size — entirely in your browser.

CSV validator

Check a CSV for uneven columns and quoting errors in your browser. Review issues before using the file.

Remove duplicate CSV rows

Remove duplicate rows from a CSV in your browser. Optionally dedupe on selected columns only.

Change CSV delimiter

Change a CSV delimiter between comma, semicolon, and tab in your browser, then re-export the file.

Sort CSV

Sort CSV rows by any column, ascending or descending, in your browser — then download the sorted file.

Filter CSV with SQL

Run SQL SELECT queries on a CSV in your browser (table name data). Export matching rows locally.

Extract CSV columns

Extract selected columns from a CSV into a new file in your browser. Keep only the fields you need.

Compare CSV files

Compare two CSV files by full row and see counts only in A, only in B, or in both — in your browser.

Merge Excel files

Combine multiple Excel files into one .xlsx in your browser. Stacks rows from each workbook’s first sheet.

Remove duplicate Excel rows

Remove duplicate rows from an Excel sheet in your browser. Optionally dedupe on selected columns only.

Filter Excel with SQL

Run SQL SELECT queries on an Excel sheet in your browser (table name data). Export matching rows.

Compare Excel files

Compare two Excel workbooks by full row on each file’s first sheet — only in A, only in B, or both.

Privacy Friendly FAQs

How are tags used on ReallyUseful.Tools?

Tags group tools by shared traits such as file converter, in browser, or privacy friendly so you can filter the directory by feature.