Data converters and file utilities

Check the structure before converting

Separators, quoting and nested values change how data fits into columns. A CSV field can contain a comma or a line break without starting a new cell when it is correctly quoted. A JSON array inside a record needs an explicit export policy. Review the proposed headers and first rows before using a converted file, especially when missing values and explicit nulls have different meanings.

Preserve meaning as well as formatting

Postal codes, product identifiers and account numbers may need to stay text to preserve leading zeroes. Spreadsheet formula protection adds a protective prefix to potentially executable cells, which changes their exported text. List comparison also depends on whether you choose to trim whitespace or ignore case. Pick those rules according to the data rather than assuming that every difference is an error.

Inspect images after compression

A target file size is a byte limit, not a visual quality score. The image compressor measures real encoded output and may reduce dimensions to fit. JPEG removes transparency against a white background; WebP behavior depends on the browser encoder. Check fine text, edges and colors in the preview. Processing limits keep these tools practical in a browser, so very large files may need a desktop or streaming workflow.

Choose the unit definition before converting

Everyday conversions need a clear source unit. A US liquid gallon differs from an Imperial gallon; a gigabyte uses decimal powers of 1000 while a gibibyte uses binary powers of 1024. Temperature conversion includes scale offsets, and fuel consumption in litres per 100 kilometres is the reciprocal of distance per litre. Our converters name these choices, show equivalent values and offer a downloadable table. They do not infer an unknown gallon definition, include variable-length calendar months, or add measurement accuracy by displaying more decimal places.

Common questions

Read the blog

• Fix CSV Files Opening in One Column: Delimiters and Quotes
• Unit Conversion: US vs Imperial, Bytes vs Bits and Rounding
• Convert nested JSON to CSV without losing identifiers or arrays
• Compress an image below an upload limit: bytes, format and dimensions
• Unit conversion mistakes: area, temperature, speed, pressure and energy
• Create, Merge, Split and Reorder PDFs Locally
• Fit vs Center Crop: Batch Resize and Exact Image Crops
• HEIC and WebP to JPEG: Compatibility and Information Loss
• Solid Image Redaction vs Blur: A Local Sharing Workflow
• CSV to JSON and Strict JSON Validation: Preserve Leading Zeroes
• Base64 vs URL Encoding: Unicode, Plus Signs and Double Encoding
• Markdown Preview, Duplicate Lines and Unicode Text Counts
• Print Size, PPI and Fractional Inches to Millimetres
• GB vs GiB and Mbps vs MB/s: Estimate File Transfer Time
• Cups to Grams, Serving Scaling and Cake-Pan Conversions
• Days Between Dates and Date Offsets: Inclusive vs Elapsed

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