82excel is a free (MIT) library that reads xlsx, xls and csv files and checks them against header rules. Drop your own file into the checker below: it reports passwords, corruption, format and column names right away.
Files are not uploaded. They are checked only inside this browser.
<script src="https://cdn.jsdelivr.net/npm/82excel@0.1.0/dist/cdn/82excel.min.js"></script>Alternative: https://82excel.com/cdn/v0.1.0/82excel.min.js · version 0.1.0 · install from npm
Call Excel82.check / inspect / readRows yourself. No UI, just the result object; the same functions run in Node.
<script src="https://cdn.jsdelivr.net/npm/82excel@0.1.0/dist/cdn/82excel.min.js"></script>
<input type="file" id="f">
<script>
document.getElementById('f').onchange = async (e) => {
const r = await Excel82.check(e.target.files[0], {
headers: ['Name', 'Phone', 'Amount'],
});
console.log(r.ok, r.errors);
};
</script>The checker above is this component. Rules are HTML attributes, and it plugs into form submission and upload.
<script src="https://cdn.jsdelivr.net/npm/82excel@0.1.0/dist/cdn/82excel.min.js"></script>
<form action="/save" method="post">
<excel-82 name="excel" required headers="Name,Phone,Amount" min-rows="1"
accept="xlsx,xls,csv" upload="/api/upload"></excel-82>
<button>Submit</button>
</form><excel-82> attributes and eventsFunction APIError codesDemo: try the rules
No sign-up, no key. MIT licensed, free for company sites too.
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