If the document size is more than 2 MB, compress the file. Scan and upload your multiple page document, such as your I-864, as one file. jpegĮach individual file (scanned document) must be no larger than 2 MB (megabytes). In order to ensure your case does not experience delays in processing, follow these guidelines when scanning your documents:Īcceptable file types include .pdf (preferred). If you do, you will delay the processing of your case and risk losing any documents you send. Unless specifically directed to do so by the National Visa Center (NVC) please do not mail any documents to NVC. Note: If you choose to use a public computer, be sure to delete your scanned documents once you have finished uploading them. If you do not have access to these, common places with this type of equipment are libraries, community centers, internet cafés, and copy shops. In order to scan your documents, you will need access to a computer and scanner or a smartphone with an internet connection. Selecting a region changes the language and/or content on you have collected all the necessary documents, you must scan and save them. If characters are separated, use a lower (darker) setting. If characters are touching, use a higher (brighter) setting.
PDF SCANNER MANUAL
If your scanner has a manual brightness control, adjust it so that characters are clean and well-formed. Or if the text isn’t crisp or drops out, try adjusting scanner contrast and brightness to clarify the scan. If your scanner has the color-filtering capability, consider using a filter or lamp that drops out the background color. These settings can improve the appearance of photographs, but they make it difficult to recognize text.įor text printed on colored paper, try increasing the brightness and contrast by about 10%. At 600 dpi, both scanning and processing typically are about four times slower than at 300 dpi.Īvoid dithering or halftone scanner settings. Your system may require 50 MB of virtual memory or more to scan the image. (21.59-by-27.94 cm) result in large images (25 MB) before compression. Pages scanned in 24-bit color, 300 dpi, at 8-1/2–by-11 in. For Adaptive Compression, 300 dpi is recommended for grayscale or RGB input, or 600 dpi for black-and-white input.
PDF SCANNER FULL
When Recognize Text Using OCR is disabled, full 10-to-3000 dpi resolution range may be used, but the recommended resolution is 72 and higher dpi. Scan in black and white whenever possible. If a page has many unrecognized words or small text (9 points or smaller), try scanning at a higher resolution. At 150 dpi, OCR accuracy is slightly lower, and more font-recognition errors occur at 400 dpi and higher resolution, processing slows, and compressed pages are bigger.
PDF SCANNER PDF
If you save the PDF using Save As, the scanned image may be compressed.įor most pages, black-and-white scanning at 300 dpi produces text best suited for conversion. If this image is appended to a PDF document, and you save the file using the Save option, the scanned image remains uncompressed. Lossless compressions can only be applied to monochrome images. To apply lossless compression to a scanned image, select one of these options under the Optimization Options in the Optimize Scanned PDF dialog box: CCITT Group 4 or JBIG2 (Lossless) for monochrome images. Also, input resolution higher than 600 dpi is downsampled to 600 dpi or lower. If you select Searchable Image or ClearScan for PDF Output Style, input resolution of 72 dpi or higher is required. Additional checks in the Preflight toolĪcrobat scanning accepts images between 10 dpi and 3000 dpi.Analyzing documents with the Preflight tool.Automating document analysis with droplets or preflight actions.Correcting problem areas with the Preflight tool.Viewing preflight results, objects, and resources.PDF/X-, PDF/A-, and PDF/E-compliant files.Playing video, audio, and multimedia formats in PDFs.Add audio, video, and interactive objects to PDFs.Edit document structure with the Content and Tags panels.
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