OPENVIST TOOLS · FREE TO USE
CSV Comparator
Compare two CSV files by an identifier column and find added, removed and modified rows.
Runs locally in your browserMaximum 2 MiB per input. Selected Base64 and SHA-256 files are read as exact bytes. CSV: 20,000 data rows and 100 columns. Text comparisons preserve case, whitespace and Unicode spelling.
Comma-separated CSV with a header row. Headers must be nonempty and unique; each row must have the same column count. Identifiers must be nonempty and unique in each file.
Load an example or provide your input to begin.
Result
Downloads contain your processed data. Review them before sharing.
What this tool does
Comma-separated CSV with a header row. Headers must be nonempty and unique; each row must have the same column count. Identifiers must be nonempty and unique in each file.
Use the example to understand the accepted input. Field names, when applicable, are literal. Inputs are not executed, and Sitemap Inspector never requests the listed URLs.
Worker processing stops after 20 seconds; results are limited to 5 MiB. Initial sitemap XML parsing runs locally before that worker timeout. Inputs and results are cleared when you reload the page. Nothing is executed from the supplied files.
A practical example
Check how an exported table changed between two snapshots using a unique identifier column.
Example input
Before: id,name\n1,Alpha\n2,Beta After: id,name\n1,Alpha\n2,Gamma
What to expect
With id as the identifier, record 2 is modified and record 1 is unchanged. The example above uses literal \n to show CSV line endings.
Use the controls above to enter this example. Load example may use a different sample; check the selected operation and options.
Continue with a related recipe
These scripts address related tasks. Review each recipe’s runtime, inputs, recorded tests and limits; its behavior may differ from this browser tool.