Nelvumo

Nelvumo

Everyday file tools that work on your device.

Nelvumo makes focused tools that run in your web browser. They open the files you choose on your own device, so you do not upload them for processing.

GuidesSee the toolsVisit ⁨Nelvumo Docs⁩

By task

What do you need to do?

Pick the job in front of you. Each one leads to a short guide from the tool that does it, with a button to open that tool in your browser.

  • Merge PDFs into one file

    Combine PDFs and JPEG or PNG images, put the pages in order and save one new PDF.

    With ⁨Nelvumo Docs⁩

  • Resize or crop a photo

    Change a photo’s pixel size, crop or orientation, then save the result as a new file.

    With ⁨Nelvumo Images⁩

  • Turn photos of paper into a PDF

    Straighten photographed pages from their corners, choose how they look and save them as one PDF.

    With ⁨Nelvumo Scan⁩

  • Clean up a spreadsheet

    Trim spaces, drop empty rows and remove duplicate rows from a CSV or Excel sheet, then save a clean copy.

    With ⁨Nelvumo Table⁩

  • Add a visible signature to a PDF

    Draw a signature or place a picture of one on a page. It is a visible mark, not a certificate-based digital signature.

    With ⁨Nelvumo Docs⁩

  • Make a photo fit an upload form

    Enter the pixel size, shape, format and file-size limit a form asks for, then see which ones the new photo meets.

    With ⁨Nelvumo Images⁩

  • Keep a scanned PDF under a size limit

    Enter the largest file size a form accepts. Pages are reduced only as far as needed, and the result says what changed and whether the PDF fits.

    With ⁨Nelvumo Scan⁩

  • Convert a CSV to Excel

    Turn a CSV or TSV file into an Excel workbook that keeps leading zeros and long numbers as text.

    With ⁨Nelvumo Table⁩

The tools

One family, each tool on its own.

Every Nelvumo tool has its own site and its own browser app. Open the one that fits the task.

Guides

Start with the file you have and the result you need.

These worked examples explain which tool fits, what to check and where a conversion can lose information. The numbers are examples, not requirements for every recipient.

Combine several documents into one readable PDF

Use Nelvumo Docs for existing PDFs and JPEG or PNG pages. For example, a one-page cover letter, a two-page CV and two certificate photos should become a five-page PDF. Use Scan first if a photo needs its paper edges straightened.

  1. Open the sources together. Check the page count and rotate sideways pages before deciding the final order.
  2. Arrange the thumbnails in reading order. Remove duplicates deliberately; a printed page number does not change when you move its page.
  3. Save all five pages as PDF, then reopen the downloaded copy. Check names, dates, small text and the last page before sending it.

If the recipient needs searchable text, keep existing text PDFs as PDF. Photos remain pictures without OCR. A rectangle drawn over private text does not securely redact it, and a visual signature does not certify identity.

Merge and arrange PDFsPrepare application documents

Prepare a photo for an upload form

Use Nelvumo Images when a form specifies pixels, shape, format or file size. Suppose it asks for a square 600 × 600 JPG below 200 kB: dimensions and bytes are separate requirements, so resizing alone may not be enough.

  1. Read the form’s exact requirements and enter them in the workspace. Choose a source with enough detail for the requested dimensions.
  2. Position the square crop so it keeps the subject. Choose JPG and the byte limit; changing the format can also change transparency.
  3. Create the result and read each requirement’s status. Inspect the downloaded picture at its actual size, then submit that copy yourself.

If the target cannot be met, check the missed bound instead of repeatedly exporting. Enlarging a small photo cannot restore detail. The tool checks file properties, not official rules about pose or lighting. Removing metadata also leaves everything visible in the picture.

Meet photo upload requirementsRemove photo metadata

Turn photographed paper into a readable PDF

Use Nelvumo Scan when the paper in a photo is tilted or surrounded by a table. For example, three photos of a letter should become three upright pages. Docs can combine images, but Scan lets you correct the paper corners and choose a cleaning look.

  1. Photograph flat paper with all four corners visible and even light. Check focus before importing; glare and blur cannot be repaired by cleaning.
  2. Check every suggested corner and move it to the paper edge if needed. Compare the cleaned preview with Original, especially around faint writing and coloured stamps.
  3. Put the three pages in order. If the portal has a PDF size cap, enter it in Save, read any quality reductions and inspect small text in the downloaded PDF.

If pale text disappears, switch that page back to Original or choose a gentler look. Retake a blurred or glared photo. The PDF contains page images without OCR; straightening a flat page does not flatten curved book paper.

Turn photos of paper into a PDFKeep a scanned PDF under a size

Local-first

Your files stay with you.

Nelvumo tools do their work in your browser, on your device. That shapes how each one is built.

  1. Opened in your browser

    A tool reads the files you choose on your device. They are not uploaded to a server for processing.

  2. New files, originals untouched

    You download the result as a new file. The file you started with stays as it was.

  3. Kept apart from this website

    Each tool runs on its own address. This website never receives your files, their names or your edits, and it has no advertising or analytics.

Start with ⁨Nelvumo Docs⁩.

Prepare PDFs and document photos locally in the browser.

Open ⁨Docs⁩