Watermark Wikipedia. A watermark is an identifying image or pattern in paper that appears as various shades of lightnessdarkness when viewed by transmitted light or when viewed by reflected light, atop a dark background, caused by thickness or density variations in the paper. Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper the dandy roll process, and the more complex cylinder mould process. Watermarks vary greatly in their visibility while some are obvious on casual inspection, others require some study to pick out. Various aids have been developed, such as watermark fluid that wets the paper without damaging it. A watermark is very useful in the examination of paper because it can be used for dating, identifying sizes, mill trademarks and locations, and determining the quality of a sheet of paper. The word is also used for digital practices that share similarities with physical watermarks. In one case, overprint on computer printed output may be used to identify output from an unlicensed trial version of a program. In another instance, identifying codes can be encoded as a digital watermark for a music, video, picture, or other file. HistoryeditThe origin of the water part of a watermark can be found back when a watermark was something that only existed in paper. At that time the watermark was created by changing the thickness of the paper and thereby creating a shadowlightness in the watermarked paper. How to remove watermark from PDF file A watermark is an identifying image or pattern in paper that appears as various shades to protect the original image. This online service is really simple. You can remove password from any PDF documents within just a couple of clicks. Add the file, enter its valid password, and get. Remove Watermark From Pdf File' title='Remove Watermark From Pdf File' />This was done while the paper was still wetwatery and therefore the mark created by this process is called a watermark. Watermarks were first introduced in Fabriano, Italy, in 1. CleverPDF offers dozens of high quality free online PDF tools, including PDF to Office, iWork and other format conversion, merge or split PDF, PDF security and more Technology keeps you connected everywhere you go, helps you capture every moment makes your life a bit easier stay uptodate with tips tricks from eHow. How to Add External SRT Subtitles to Video. SubRip caption files are named with the extension. SRT. SRT is perhaps the most basic of all subtitle formats. ProcesseseditDandy roll processedit. A perspective view of a dandy roll in accordance with the invention of a conventional paper making machine incorporating watermarks into the paper. Traditionally, a watermark was made by impressing a water coated metal stamp or dandy roll onto the paper during manufacturing. The invention of the dandy roll in 1. John Marshall revolutionised the watermark process and made it easier for producers to watermark their paper. The dandy roll is a light roller covered by material similar to window screen that is embossed with a pattern. Faint lines are made by laid wires that run parallel to the axis of the dandy roll, and the bold lines are made by chain wires that run around the circumference to secure the laid wires to the roll from the outside. Because the chain wires are located on the outside of the laid wires, they have a greater influence on the impression in the pulp, hence their bolder appearance than the laid wire lines. Remove Watermark From Pdf File' title='Remove Watermark From Pdf File' />This embossing is transferred to the pulpfibres, compressing and reducing their thickness in that area. Because the patterned portion of the page is thinner, it transmits more light through and therefore has a lighter appearance than the surrounding paper. If these lines are distinct and parallel, andor there is a watermark, then the paper is termed laid paper. If the lines appear as a mesh or are indiscernible, andor there is no watermark, then it is called wove paper. This method is called line drawing watermarks. Cylinder mould processeditAnother type of watermark is called the cylinder mould watermark. It is a shaded watermark first used in 1. Instead of using a wire covering for the dandy roll, the shaded watermark is created by areas of relief on the rolls own surface. Once dry, the paper may then be rolled again to produce a watermark of even thickness but with varying density. The resulting watermark is generally much clearer and more detailed than those made by the Dandy Roll process, and as such Cylinder Mould Watermark Paper is the preferred type of watermarked paper for banknotes, passports, motor vehicle titles, and other documents where it is an important anti counterfeiting measure. On postage stampsedit. The Crown CA watermark found on many British Commonwealth stamps. In philately, the watermark is a key feature of a stamp, and often constitutes the difference between a common and a rare stamp. Collectors who encounter two otherwise identical stamps with different watermarks consider each stamp to be a separate identifiable issue. The classic stamp watermark is a small crown or other national symbol, appearing either once on each stamp or a continuous pattern. Watermarks were nearly universal on stamps in the 1. Linksys Wusb54g Driver Vista. U. S. issues, but some countries continue to use them. A US postal stationery envelope from 1. Some types of embossing, such as that used to make the cross on oval design on early stamps of Switzerland, resemble a watermark in that the paper is thinner, but can be distinguished by having sharper edges than is usual for a normal watermark. Stamp paper watermarks also show various designs, letters, numbers and pictorial elements. The process of bringing out the stamp watermark is fairly simple. Sometimes a watermark in stamp paper can be seen just by looking at the unprinted back side of a stamp. More often, the collector must use a few basic items to get a good look at the watermark. For example, watermark fluid may be applied to the back of a stamp to temporarily reveal the watermark. Even using the simple watermarking method described, it can be difficult to distinguish some watermarks. Watermarks on stamps printed in yellow and orange can be particularly difficult to see. A few mechanical devices are also used by collectors to detect watermarks on stamps such as the Morley Bright watermark detector and the more expensive Safe Signoscope. Such devices can be very useful for they can be used without the application of watermark fluid and also allow the collector to look at the watermark for a longer period of time to more easily detect the watermark. See alsoeditReferenceseditFurther readingeditBuxton, B. H. The Buxton Encyclopedia of Watermarks. Tappan, N. Y. Buxton Stamp Co., 1. Felix, Ervin J. The Stamp Collectors Guidebook of Worldwide Watermarks and Perforations, from 1. Racine, WI. Whitman Publishing Co., 1. Repeta, Louis E. Watermarks In Postage Stamp Paper a comprehensive look at a key stamp element. Reprinted in 1. 99. The American Philatelist February 1. External linksedit. How to Insert a Watermark in a PDF File. Use the tag to embed your PDF documents. JupiterimagesCreatasGetty Images. Watermarks are images or text displayed over the top of or underneath content in your PDF files to indicate information such as who owns the document, who authored it and whether or not its contents are confidential. Adding a watermark to your businesss PDF files adds an air of professionalism and it can also prevent against other parties passing off your work as their own. Adobe Acrobat and PDF Watermark Creator are software solutions that can add watermarks to your PDF documents. PDFaid is a free website with watermarking functionality. Adobe Acrobat. 1. Launch Adobe Acrobat and open the PDF file into which you would like to insert a watermark. Click Document from the main Acrobat menu. A drop down menu appears. Click Watermark and then click Add to launch the Add Watermark dialog. Click Page Range Options and enter the pages of your document into which you would like to add a watermark. If you would like to add a watermark to all pages, skip this step. Specify the type of watermark you would like to use. To insert a text watermark, click the Text radio button and enter your watermark text in the field provided. Customize font size, face and color using the available formatting tools. To use an image or other PDF file for your watermark, click the File radio button and click Browse to locate the file you would like to use. Double click the file to select it. For the purpose of watermarking, Acrobat is compatible with JPEG, BMP and PDF file formats. Customize the appearance of your watermark. Click one of the Rotation radio buttons to adjust your watermarks orientation on the page. Click and drag the Opacity slider to adjust the watermarks transparency. Click the Appear Behind Page radio button to have your watermark display behind the content of your PDF document. Click OK to apply your watermark. PDFaid. 1. Open your Web browser and navigate to the PDFaid website see link in References. Click the PDF Watermark button. Click the Choose File button and browse to the location on your computer where your PDF file is saved. Double click the file. Insert your watermark text in the field labeled Watermark Text. Add optional styling using the tools listed under the Watermark Text Options heading. Available formatting options include font face and color, watermark orientation and transparency. Click the Watermark PDF button. The website displays a confirmation dialog when watermarking is complete. Click the Click Here link and save your watermarked PDF file to your computer. PDF Watermark Creator. Open your Web browser and navigate to the website for PDF Watermark Creator see link in References. Right click the Download button and save the installation file to your computer. Double click the installation file and follow the prompts to install PDF Watermark Creator on your computer. Launch PDF Watermark Creator. Click the Open button and browse to the location on your computer where your PDF file is saved. Double click it. Enter your watermark text in the box labeled Text to Stamp as Watermark. Customize the appearance of your watermark using the formatting tools provided. You can change the angle of the watermark, format the font color and size and change the location of the watermark on the page. Click Stamp Watermark Save PDF to save your watermarked PDF to your computer. About the Author. Andrew Tennyson has been writing about culture, technology, health and a variety of other subjects since 2. He has been published in The Gazette, DTR and ZCom. He holds a Bachelor of Arts in history and a Master of Fine Arts in writing. Photo Credits. JupiterimagesCreatasGetty Images.