How to convert electronic PDF to black and white scanned copy version? Batch conversion method for multiple documents

When the electronically generated PDF pages are too clear and richly colored, and do not meet the submission requirements for black-and-white photocopies or scanned archival copies, batch office software can be used for unified conversion. This article takes multiple text-based PDFs as an example to demonstrate how to access the scanned-copy effect function in a PDF tool, batch import files, select pure black and pure white mode, set 200 PPI clarity, arrange the output directory, and check the results. It also provides practical suggestions for common issues such as color seals, small text, file size, and preservation of originals.

Many office materials are exported directly to PDF from Word, docx, doc, WPS, or business systems. These files display clearly with accurate colors, but they also carry obvious electronic-document characteristics. When the receiving party requires black-and-white scanned versions, photocopy-style versions, or image-type archival copies, staff often have to print each one individually and then rescan them with a scanner. Once the number of files increases, this approach is not only slow, but also increases risks such as paper consumption, skewed scans, missed pages, and mismatched file names.

For this kind of repetitive work, you can use the "Convert PDF to Scanned Effect" feature in HeSoft Doc Batch Tool to directly batch-process multiple text-based PDFs into pages that resemble paper photocopies or scans. It is an office file batch-processing software, and its core value is not just converting a single PDF, but allowing multiple files to share one set of processing parameters and complete import, configuration, and output in a centralized way. The following explanation, combined with interface screenshots, shows how to create black-and-white scanned photocopy-style PDFs and introduces the applicable ranges of color, grayscale, and different PPI options.

1. Applicable scenarios: when a PDF scanned/photocopied version is needed

Unified electronic style for paper materials

When consolidating archives, some files may come from scanners, while others are exported directly from word-processing software. When the two types of files are placed together, the visual style difference is obvious. Converting electronic PDFs to a scanned effect can make the final materials closer to a unified paper archival style.

Batch creation of black-and-white submission copies

Course materials, application attachments, internal policies, meeting materials, or business proofs sometimes need to be provided as black-and-white photocopies. If the documents mainly consist of black text and tables, the pure black and pure white mode can quickly generate the required effect without printing dozens of files one by one.

Reducing repetitive work across many files

Manually processing a single PDF may take only a few minutes, but 100 files mean 100 rounds of opening, configuring, saving, and closing. Batch-processing tools allow centralized import of materials from a folder and continuous processing after confirming the parameters once, making them more suitable for periodic, higher-volume office tasks.

Creating delivery copies that cannot be directly re-edited

The scanned effect usually gives pages an image-like appearance, making it suitable as a final display or submission copy. However, image-like appearance does not mean encryption, nor can it replace professional information-security measures. If files contain sensitive information, you must still follow your organization's requirements for desensitization, permissions, and transmission.

2. Preview of effects before and after processing

Before conversion: pages retain electronic layout characteristics

The sample PDF before processing is a multi-page course material. The edges of the English body text in the pages are smooth, the column headings appear blue, and the header color blocks retain the original design. This is a common effect of text-based PDFs, usually generated directly from office documents.

If only online reading or full-text search is needed, this version is more convenient; however, if a black-and-white photocopy effect is required, its colors and text edges will look too "electronic." Therefore, before processing, you should clarify the final purpose and keep this original version for later editing, searching, and reconversion.

After conversion: pages present a black-and-white image-like appearance

The following image shows the result after processing using pure black and pure white mode. The blue headings have been converted to black, the header area has become a black background with white text, and the body text edges show a texture similar to a scanned image, making the whole page closer to a PDF produced by printing on paper and then scanning it.

It should be noted that the goal of the scanned effect is to change how the page is presented, not to revise the original content. After processing, you should still verify that the page count, headings, body text, and figures are complete, paying special attention to whether light-colored text, thin lines, and small-font content remain legible.

3. Operating steps: batch-generating black-and-white scanned-effect PDFs

Step 1: Open the corresponding PDF batch-processing function

Start HeSoft Doc Batch Tool , and in the left navigation bar, go to "PDF Tools." The function panel lists various PDF processing items. Find "Convert PDF to Scanned Effect" and enter it.

In the screenshot, this function is located in the PDF tools list, and its description points to batch conversion of PDF pages into image effects similar to paper scans. Here two similar needs should be distinguished: if you only want to remove color, you may consider color conversion; if you need electronic pages to have the image-like appearance of scanning or photocopying, you should use the "Convert PDF to Scanned Effect" feature shown in this tutorial.

Step 2: Import multiple PDFs to be converted

After entering the task, the software first asks you to "select the records to process." In the upper right, you can see operation entries such as "Add Files," "Import Files from Folder," "Clear," and "More."

"Add Files" is suitable for selecting specified PDFs from one or more locations; "Import Files from Folder" is suitable for batch materials that have already been organized by project. In the screenshot, the list already contains 1.pdf through 4.pdf, for a total of 4 records. The list also displays the path, extension, creation time, and modification time, making it easier to confirm the source before processing.

After importing, do not rush to click Next. It is recommended to complete three checks: first, whether the total number of records at the bottom matches the number of files planned for processing; second, whether the extensions are all pdf; third, whether the file paths and names belong to the current project. If you find incorrectly selected records, you can use the delete operation on the corresponding row; if you need to reselect everything, you can click "Clear." After confirming that everything is correct, click "Next" at the bottom.

Step 3: Choose black-and-white, color, or grayscale mode

After entering "Set Processing Options," first select the color mode. The interface provides three options: "Pure Black and Pure White," "Color," and "Grayscale." In the example, "Pure Black and Pure White" is selected.

If the goal is to generate a typical black-and-white photocopy, choose Pure Black and Pure White. This setting prevents colors such as blue and red in the pages from being presented in their original colors, so before conversion you must confirm whether colors carry critical meaning. For example, red seals, data curves in different colors, colored annotations, or status markers may need to be preserved, in which case pure black-and-white should not be used directly.

Color mode is suitable for preserving the original colors in the pages while still obtaining scanned-style pages; grayscale mode is suitable for materials with many photos, shadows, and gradients but no requirement to keep specific colors. If a batch of files varies greatly in content, it is best to classify them first: use Pure Black and Pure White for pure-text files, grayscale for files containing photos, and color for files whose colors must be preserved.

Step 4: Select PPI clarity according to content

Below the color mode is "Image Clarity." The interface shows options such as Basic (96 PPI), Normal (150 PPI), Clear (200 PPI), HD (300 PPI), and Custom. The example selects "Clear (200 PPI)," which is suitable as a starting test parameter for ordinary office text PDFs.

96 PPI can be used for files with low clarity requirements that are mainly viewed quickly on screen; 150 PPI is suitable for general text preview; 200 PPI can better balance text recognition and processing cost; 300 PPI is more suitable for small fonts, seal details, dense tables, or materials that need to be printed. Higher PPI does not mean it is more suitable in every case, because it may increase output size and processing time. In actual work, you should compare representative pages instead of directly choosing the highest value for all files.

Step 5: Set the save location

After completing the options, click "Next" to enter the "Set Save Location" stage of the workflow. It is recommended to create a separate directory for this task, for example, distinguishing output results from original files by "project name + scanned version." If there are many files, you can also keep the original file numbering or business name to facilitate later one-to-one matching.

Do not mix the save location with the temporary download directory, and do not clear the source files before checking the results. Because scanned-effect processing converts pages into an image-like style, the output file size may differ from the original text-based PDF, so you should also check the available disk space in advance.

Step 6: Start processing and spot-check the results

Follow the workflow to the "Start Processing" stage and execute the batch task. During processing, keep the source files accessible, and do not move the files being processed or disconnect the storage device where they are located. After completion, open the output directory and check the generated files.

When spot-checking, you may prioritize the first page, pages with colored content, pages with the smallest fonts, and the last page. Focus on checking whether the page count is consistent, whether the page orientation is correct, whether the body text is clear, whether black areas are too heavy, and whether light-colored lines are lost. If problems are found, you can adjust the color mode or PPI and process again; if the samples meet the requirements, then batch-convert similar files with the same parameters.

4. How to choose a conversion plan for different documents

Contracts, notices, and ordinary reports

These documents generally consist mainly of black text, so you can first test "Pure Black and Pure White + 200 PPI." If the seal is colored and its color must be preserved, switch to color mode and pay special attention to the seal area.

Exam papers, handouts, and training materials

When there is a large amount of text and lines, 200 PPI is usually a practical starting point. If they contain very small superscripts, subscripts, formulas, or thin-line diagrams, you can further test 300 PPI. Do not check only the first page; choose the most complex page to evaluate.

Photos, ID images, and pages with shadows

Pure black-and-white tends to compress light and dark gradations, which may cause dark areas to merge together and light-colored details to weaken. For such materials, grayscale can be used first; if the colors themselves need to be identified, use color mode.

PDFs generated from Excel spreadsheets

PDFs exported from Excel, xlsx, or xls files may contain thin grid lines, light-colored fills, and data markers in different colors. Before conversion, confirm whether these elements are important. If only print-style archiving is needed, you can test pure black-and-white; if colors are used to distinguish data categories, choose color or grayscale and check the table borders.

5. Common questions and precautions

Why can't the text be selected as before after conversion?

The scanned effect makes PDF pages closer to image-type content, so the original text selection, copying, and searching experience may change. This is a common result of page image conversion. When full-text search is needed, keep the original text-based version at the same time, or consider a text-recognition process separately according to later needs.

What is the difference between pure black-and-white and grayscale?

Pure black and pure white emphasizes black-and-white contrast and is suitable for text, wireframes, and photocopy-style effects; grayscale can preserve intermediate tones from light to dark and is more suitable for images, shadows, and gradients. Neither is absolutely better; the key lies in the page content.

Why should different types of files be processed in batches separately?

Batch operations are suitable for applying unified rules, but unified rules must match the characteristics of the files. If a batch contains pure text as well as color charts and photos, a single parameter setting may not handle all of them well. Classifying first and then batch processing is usually more reliable than applying one mode to everything.

Can conversion replace real stamping or paper scanning?

No. This feature is used to generate a page effect similar to a scanned copy. It does not change the business facts represented by the document, nor can it replace signatures, seals, authentication, or other formal procedures. Whether the converted version can be submitted should be determined by the receiving party's requirements.

Do I need to back up before processing?

Backup is recommended. The original text-based PDF has better editing, searching, and copying capabilities and should be retained long-term as the source file. The output scanned-effect version can be used for specific submission and archiving scenarios. Keeping the two versions separate is more convenient for later management.

6. Summary

When electronic PDFs need to be made into black-and-white scanned photocopy versions, there is no need to print and scan them one by one. Through HeSoft Doc Batch Tool , you can select "Convert PDF to Scanned Effect" in PDF Tools, add multiple files at once, and uniformly set Pure Black and Pure White, Color, or Grayscale mode as well as different PPI clarity levels according to the material type. For common text materials, you can first run a sample test with Pure Black and Pure White at 200 PPI, then adjust according to small fonts, images, and file size.

What batch processing really saves is not only conversion time, but also the repetitive cost of file selection, parameter configuration, output organization, and manual checking. It is recommended to first organize the PDFs to be processed, classify them into pure text, grayscale images, and color content, select one or two samples for trial conversion, confirm the effect, and then perform the full batch conversion while keeping the original text-based files.