Document Stamp Online

Using browser capabilities to process, your files will not be uploaded to the cloud.

Online document stamping tool, open PDF or image files, and add stamps or image watermarks to the files. PDF files are stamped to support high fidelity and will not reduce the clarity of the PDF file.

1. File : Open the PDF or image file to be stamped. VIP membership is required if the file size exceeds 10MB. If it is an image file, the pixel width of the image shall not exceed 65535, the pixel height of the image shall not exceed 65535, and the width * height of the image shall not exceed 16384 * 16384.
2. Seal Image : Open the seal image and support adjusting the scaling factor, rotation angle, transparency, and other parameters of the seal image.
3. Stamp Type : Support full seal and paging seal. Full Seal : Each stamped page is stamped with a complete seal. Paging Seal : Only support stamping PDF files with a paging seal. Stamp one seal to multi pages. The seal is automatically placed in the middle right position on the stamped page.
4. First-Last Percent : Applicable to the paging seal, with a range of [0,100].
5. Opacity : The transparency level of the seal, with a transparency value range of [0,1].
6. Position : Select the position where seals are displayed. This tool supports adding watermarks at nine positions: top, bottom, left, right, center, top left, top right, bottom left, and bottom right.
7. Margin : The position of the seal from the edge of the PDF page. The top, bottom, left, and right positions support setting one parameter, while the top left, top right, bottom left, and bottom right positions support setting two parameters separated by English commas. The center position does not use margin parameters.
8. Rotate : The angle of seal rotation, measured in degrees, with a range of rotation angle values of [0,360]. Angle rotation starts from the bottom left corner of the watermark and rotates clockwise.
9. Pages : Select which pages to add seal to, the supported formats are 1-10,2n+1,3,5. For the format of an+b, a and b are integers and support both positive and negative numbers. n is a natural number starting from 0. The number of pages filled in cannot exceed the total number of pages in the PDF document.
10. Scale : Set the scaling factor for the seal image, with a scaling value greater than 0. When it is less than 1, the image will be reduced in size. When greater than 1, the image will be enlarged.
11. Stamp : After adjusting the parameters for stamping, click on Stamp to generate the stamped file.
12. Download：Download the stamped file locally.
13. Clear : Clear the currently open file.
14. Full Seal Example Image
    
15. Paging Seal Example Image