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fix(plugin-import-export): adds UTF-8 BOM support to csv exports #14044

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fix(plugin-import-export): adds UTF-8 BOM support to csv exports #14044

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fix(plugin-import-export): adds utf-8 BOM to csv exports
PatrikKozak Oct 2, 2025
424646d
Merge branch 'main' of github.com:payloadcms/payload into fix/plugin-…
PatrikKozak Oct 2, 2025
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15 changes: 11 additions & 4 deletions packages/plugin-import-export/src/export/createExport.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,11 @@ export const createExport = async (args: CreateExportArgs) => {
columns: allColumns,
})

// Add UTF-8 BOM for Excel compatibility on Windows
if (isFirstBatch) {
this.push(new Uint8Array([0xef, 0xbb, 0xbf]))
}

this.push(encoder.encode(csvString))
} else {
// --- JSON Streaming ---
Expand Down Expand Up @@ -319,7 +324,7 @@ export const createExport = async (args: CreateExportArgs) => {
return new Response(stream as any, {
headers: {
'Content-Disposition': `attachment; filename="${name}"`,
'Content-Type': isCSV ? 'text/csv' : 'application/json',
'Content-Type': isCSV ? 'text/csv; charset=utf-8' : 'application/json',
},
})
}
Expand Down Expand Up @@ -403,7 +408,9 @@ export const createExport = async (args: CreateExportArgs) => {
)
}

const buffer = Buffer.from(format === 'json' ? `[${outputData.join(',')}]` : outputData.join(''))
const buffer = Buffer.from(
format === 'json' ? `[${outputData.join(',')}]` : '\uFEFF' + outputData.join(''),
)
if (debug) {
req.payload.logger.debug(`${format} file generation complete`)
}
Expand All @@ -415,7 +422,7 @@ export const createExport = async (args: CreateExportArgs) => {
req.file = {
name,
data: buffer,
mimetype: isCSV ? 'text/csv' : 'application/json',
mimetype: isCSV ? 'text/csv; charset=utf-8' : 'application/json',
size: buffer.length,
}
} else {
Expand All @@ -429,7 +436,7 @@ export const createExport = async (args: CreateExportArgs) => {
file: {
name,
data: buffer,
mimetype: isCSV ? 'text/csv' : 'application/json',
mimetype: isCSV ? 'text/csv; charset=utf-8' : 'application/json',
size: buffer.length,
},
user,
Expand Down
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