diff --git a/public/main.js b/public/main.js
index 9adf58f..264ab9b 100644
--- a/public/main.js
+++ b/public/main.js
@@ -36,7 +36,7 @@ async function pollJob(jobId) {
     if (j.status === 'done') {
       bar.style.width = '100%';
       bar.innerText = '100%';
-      resEl.innerHTML = `Concluído. <a href="/download/${jobId}">Baixar CSV processado</a>`;
+      resEl.innerHTML = `Concluído. <a href="/download/${jobId}">Baixar arquivo processado</a>`;
       return;
     }
     if (j.status === 'error') {
@@ -110,4 +110,4 @@ document.addEventListener("DOMContentLoaded", () => {
     link2.click();
     link2.remove();
   });
-});
\ No newline at end of file
+});
diff --git a/service/csvService.js b/service/csvService.js
index 237c09d..41aba2c 100644
--- a/service/csvService.js
+++ b/service/csvService.js
@@ -9,6 +9,8 @@ const {
   finishJob
 } = require('./jobStore.service');
 
+const RESULT_HEADERS = ['Provedor', 'Distancia', 'Dedicado', 'Nao Dedicado', 'Erro'];
+
 function normalizeHeader(value) {
   return String(value || '')
     .trim()
@@ -92,7 +94,7 @@ function readExcelRows(filePath) {
 
   return XLSX.utils.sheet_to_json(workbook.Sheets[firstSheetName], {
     header: 1,
-    blankrows: false,
+    blankrows: true,
     defval: ''
   }).map(row => row.map(cell => String(cell ?? '').trim()));
 }
@@ -105,6 +107,11 @@ function findFirstHeaderIndex(headers, predicate) {
   return headers.map(normalizeHeader).findIndex(predicate);
 }
 
+function hasHeaderAlias(headers, aliases) {
+  const normalizedAliases = aliases.map(normalizeHeader);
+  return headers.map(normalizeHeader).some(header => normalizedAliases.includes(header));
+}
+
 function hasCepHeader(headers) {
   return headers.map(normalizeHeader).some(header => /\bcep\b/.test(header) || header === 'codigo postal');
 }
@@ -116,9 +123,8 @@ function hasAddressOrNumberHeader(headers) {
 }
 
 function hasGeoHeaders(headers) {
-  const normalizedHeaders = headers.map(normalizeHeader);
-  return normalizedHeaders.some(header => header.includes('latitude'))
-    && normalizedHeaders.some(header => header.includes('longitude'));
+  return hasHeaderAlias(headers, ['latitude', 'lat'])
+    && hasHeaderAlias(headers, ['longitude', 'long', 'lng', 'lon']);
 }
 
 function findHeaderRowIndex(rows) {
@@ -137,8 +143,8 @@ function resolveColumnIndexes(headers) {
     idxCep: findFirstHeaderIndex(headers, header => /\bcep\b/.test(header) || header === 'codigo postal'),
     idxNumero: exactIndex(['numero', 'número', 'num', 'nº', 'n°']),
     idxEndereco: findFirstHeaderIndex(headers, header => header.includes('endereco') || header.includes('logradouro')),
-    idxLatitude: findFirstHeaderIndex(headers, header => header.includes('latitude')),
-    idxLongitude: findFirstHeaderIndex(headers, header => header.includes('longitude'))
+    idxLatitude: exactIndex(['latitude', 'lat']),
+    idxLongitude: exactIndex(['longitude', 'long', 'lng', 'lon'])
   };
 }
 
@@ -227,6 +233,82 @@ function formatApiErrorResponse(error) {
   return error && (error.message || String(error));
 }
 
+function buildSuccessResultColumns(viab) {
+  const provedor = viab.provedor ?? '';
+  const distancia = viab.distancia ?? (viab.raw && (viab.raw.distancia || viab.raw.distance)) ?? '';
+  const dedicado = viab.dedicado ? 'Viavel' : 'Nao Viavel';
+  const naoDedicado = viab.naoDedicado ? 'Viavel' : 'Nao Viavel';
+  const error = viab.error ? cleanCsvValue(viab.error) : '';
+
+  return [provedor, distancia, dedicado, naoDedicado, error];
+}
+
+function buildErrorResultColumns(err) {
+  return ['', '', '', '', cleanCsvValue(formatApiErrorResponse(err))];
+}
+
+function shiftCellAddress(address, colOffset) {
+  const decoded = XLSX.utils.decode_cell(address);
+  decoded.c += colOffset;
+  return XLSX.utils.encode_cell(decoded);
+}
+
+function shiftRange(range, colOffset) {
+  const decoded = typeof range === 'string' ? XLSX.utils.decode_range(range) : range;
+  return {
+    s: { r: decoded.s.r, c: decoded.s.c + colOffset },
+    e: { r: decoded.e.r, c: decoded.e.c + colOffset }
+  };
+}
+
+function prependResultColumnsToWorksheet(worksheet, headerRowIndex, rowResults) {
+  const colOffset = RESULT_HEADERS.length;
+  const shiftedWorksheet = {};
+
+  Object.keys(worksheet).forEach(key => {
+    if (key[0] === '!') return;
+    shiftedWorksheet[shiftCellAddress(key, colOffset)] = worksheet[key];
+  });
+
+  const originalRange = worksheet['!ref']
+    ? XLSX.utils.decode_range(worksheet['!ref'])
+    : { s: { r: 0, c: 0 }, e: { r: headerRowIndex, c: 0 } };
+
+  shiftedWorksheet['!ref'] = XLSX.utils.encode_range({
+    s: { r: Math.min(originalRange.s.r, headerRowIndex), c: 0 },
+    e: { r: originalRange.e.r, c: originalRange.e.c + colOffset }
+  });
+
+  if (worksheet['!cols']) {
+    shiftedWorksheet['!cols'] = Array(colOffset).fill({ wch: 16 }).concat(worksheet['!cols']);
+  }
+
+  if (worksheet['!merges']) {
+    shiftedWorksheet['!merges'] = worksheet['!merges'].map(merge => shiftRange(merge, colOffset));
+  }
+
+  if (worksheet['!autofilter'] && worksheet['!autofilter'].ref) {
+    shiftedWorksheet['!autofilter'] = {
+      ...worksheet['!autofilter'],
+      ref: XLSX.utils.encode_range(shiftRange(worksheet['!autofilter'].ref, colOffset))
+    };
+  }
+
+  RESULT_HEADERS.forEach((value, index) => {
+    const address = XLSX.utils.encode_cell({ r: headerRowIndex, c: index });
+    shiftedWorksheet[address] = { t: 's', v: value };
+  });
+
+  rowResults.forEach(({ rowIndex, values }) => {
+    values.forEach((value, index) => {
+      const address = XLSX.utils.encode_cell({ r: rowIndex, c: index });
+      shiftedWorksheet[address] = { t: 's', v: String(value ?? '') };
+    });
+  });
+
+  return shiftedWorksheet;
+}
+
 async function countValidLines(inputPath) {
   await discoverDataType(inputPath);
   const rows = readRows(inputPath);
@@ -251,11 +333,44 @@ async function processCsvFile(jobId, inputPath, originalName) {
   const headers = rows[headerRowIndex] || [];
   const indexes = resolveColumnIndexes(headers);
   const baseName = path.parse(originalName || inputPath).name;
-  const outputFilename = `processed_${Date.now()}_${baseName}.csv`;
+  const isExcel = isExcelFile(inputPath);
+  const outputFilename = `processed_${Date.now()}_${baseName}${isExcel ? '.xlsx' : '.csv'}`;
   const outputPath = path.join(__dirname, '..', 'outputs', outputFilename);
+  fs.mkdirSync(path.dirname(outputPath), { recursive: true });
+
+  if (isExcel) {
+    const workbook = XLSX.readFile(inputPath, { cellDates: false, raw: false, cellStyles: true });
+    const firstSheetName = workbook.SheetNames[0];
+    const worksheet = workbook.Sheets[firstSheetName];
+    const rowResults = [];
+
+    for (let rowIndex = headerRowIndex + 1; rowIndex < rows.length; rowIndex++) {
+      const cols = rows[rowIndex];
+      const geoPayload = buildGeoPayload(cols, indexes);
+      const cepPayload = buildCepPayload(cols, indexes);
+      if (!geoPayload && !cepPayload) continue;
+
+      try {
+        const viab = await consultarComFallback(geoPayload, cepPayload);
+        rowResults.push({ rowIndex, values: buildSuccessResultColumns(viab) });
+        incrementProcessed(jobId);
+      } catch (err) {
+        rowResults.push({ rowIndex, values: buildErrorResultColumns(err) });
+        incrementErrors(jobId);
+        incrementProcessed(jobId);
+      }
+    }
+
+    workbook.Sheets[firstSheetName] = prependResultColumnsToWorksheet(worksheet, headerRowIndex, rowResults);
+    XLSX.writeFile(workbook, outputPath, { bookType: 'xlsx' });
+    finishJob(jobId, path.basename(outputPath));
+
+    return outputPath;
+  }
+
   const outStream = fs.createWriteStream(outputPath, { encoding: 'utf8' });
   outStream.write('\uFEFF');
-  outStream.write(['Provedor', 'Distancia', 'Dedicado', 'Nao Dedicado', 'Erro', ...headers].join(';') + '\n');
+  outStream.write([...RESULT_HEADERS, ...headers].join(';') + '\n');
 
   for (const cols of rows.slice(headerRowIndex + 1)) {
     const geoPayload = buildGeoPayload(cols, indexes);
@@ -264,18 +379,11 @@ async function processCsvFile(jobId, inputPath, originalName) {
 
     try {
       const viab = await consultarComFallback(geoPayload, cepPayload);
-      const provedor = viab.provedor ?? '';
-      const distancia = viab.distancia ?? (viab.raw && (viab.raw.distancia || viab.raw.distance)) ?? '';
-      const dedicado = viab.dedicado ? 'Viavel' : 'Nao Viavel';
-      const naoDedicado = viab.naoDedicado ? 'Viavel' : 'Nao Viavel';
-      const error = viab.error ? cleanCsvValue(viab.error) : '';
-
-      const outCols = [provedor, distancia, dedicado, naoDedicado, error, ...cols].map(cleanCsvValue);
+      const outCols = [...buildSuccessResultColumns(viab), ...cols].map(cleanCsvValue);
       outStream.write(outCols.join(';') + '\n');
       incrementProcessed(jobId);
     } catch (err) {
-      const errMsg = cleanCsvValue(formatApiErrorResponse(err));
-      const outCols = ['', '', '', '', errMsg, ...cols].map(cleanCsvValue);
+      const outCols = [...buildErrorResultColumns(err), ...cols].map(cleanCsvValue);
       outStream.write(outCols.join(';') + '\n');
       incrementErrors(jobId);
       incrementProcessed(jobId);
diff --git a/service/viabilidadeService.js b/service/viabilidadeService.js
index 49e23fe..8a14fe8 100644
--- a/service/viabilidadeService.js
+++ b/service/viabilidadeService.js
@@ -67,7 +67,7 @@ function readExcelHeaders(filePath) {
 
   const rows = XLSX.utils.sheet_to_json(workbook.Sheets[firstSheetName], {
     header: 1,
-    blankrows: false,
+    blankrows: true,
     defval: ''
   });
 
@@ -105,8 +105,8 @@ function hasAddressOrNumberHeader(headers) {
 }
 
 function hasGeoHeaders(headers) {
-  return headers.some(header => header.includes('latitude'))
-    && headers.some(header => header.includes('longitude'));
+  return hasHeader(headers, ['latitude', 'lat'])
+    && hasHeader(headers, ['longitude', 'long', 'lng', 'lon']);
 }
 
 async function consultarViabilidade(data) {