Photo

Signature cleaner

Sign on plain white paper with a dark pen and take a photo. ANURUP evens out shadows, separates ink from paper and trims the empty margin.

How to make a clean signature image for a form

  1. Upload the photo or scan of your signature.
  2. Choose the ink colour (black, blue or original) and the background (white JPG or transparent PNG).
  3. Move the threshold slider if thin strokes disappear or grey smudges stay.
  4. Download it, or continue to Resize to size & KB to match the form's limits.

Questions

What size should a signature image be?
It depends on the form. A common request is about 140×60 pixels and 10-20 KB. Use the signature preset in Resize to size & KB and check it against your form.

More Photo & Signature

  • Passport Size Photo Maker

    Crop a photo to 35×45 mm, 2×2 inch and other sizes, set the background and DPI, and print a 4×6 sheet.

  • Resize Image to KB & Pixels

    Set exact pixels, cm or mm at a DPI, then keep the file between a minimum and maximum KB. Made for photo and signature uploads.

  • Compress Image to KB

    Shrink JPG, PNG or WebP photos to a target like 100 KB, or by quality. Works on many images at once.

  • Crop, Rotate & Flip Image

    Crop freely or to a ratio like 1:1 or 35×45 mm, rotate by 90° and mirror. Works with a mouse or touch.

  • Remove Image Background

    Remove a photo's background with on-device AI and replace it with white, blue, any colour or transparency.

  • JPG, PNG & WebP Converter

    Convert images between JPG, PNG and WebP, one at a time or in a batch.