How to batch convert text-based PDFs into photocopied scanned effects? A tutorial for unified multi-file processing

When a batch of electronically generated text-based PDFs need to be submitted as photocopies, scanned archives, or image-type documents, printing and scanning them one by one is not only time-consuming but also prone to omissions. This article explains how to use the "Convert PDF to Scanned Effect" feature in office software to import multiple PDF files at once, choose pure black and white, color, or grayscale modes, and set page clarity to complete batch conversion. The tutorial combines before-and-after effects with the actual operation interface to help users quickly establish a stable and efficient PDF batch processing workflow.

In the process of archiving materials, organizing teaching documents, submitting contract attachments, and circulating business materials, we often encounter a need: we already have many text-based PDFs directly exported from Word, WPS, or other layout software, but the recipient requires a version that looks like it was printed and then rescanned. If we really print each file one by one and then rescan them with a scanner, it not only consumes paper and toner, but also requires repeated naming, page count checking, and file organization, which is especially time-consuming when processing dozens or even hundreds of PDFs.

A more efficient approach is to use office software to directly convert PDF pages into an image effect similar to paper scans. This article uses HeSoft Doc Batch Tool to demonstrate the complete method. It is a batch tool for daily office document processing that can add multiple PDFs at once and process them with a unified color mode and clarity, thereby reducing the repetitive work of opening files, configuring settings one by one, and exporting one by one. This article focuses on solving the problem of "how to batch convert many text-based PDFs into a copy-scan effect" and explains parameter selection, effect differences, and precautions during processing.

1. Which scenarios are suitable for converting text-based PDFs into a scan effect

1. Electronic materials need to simulate paper copies

Although some materials are originally electronic documents, when submitting, displaying, or circulating them internally, they need to present a visual effect similar to printing and photocopying. By converting to a PDF scan effect, originally sharp-edged, brightly colored electronic text can be made to look closer to a paper document, without actually printing and scanning.

2. Multiple materials need a unified visual style

When files come from different people or different systems, the font colors, graphic colors, and clarity in the pages may be inconsistent. Batch converting these PDFs to pure black and white, grayscale, or color scan effects can unify the appearance of a batch of materials. Especially for files with a high proportion of text and tables, processing them with unified parameters is more convenient for archiving and printing.

3. Wanting to turn PDF pages into an image-based effect

Characters in text-based PDFs can usually be selected, copied, or searched. After converting to a scan effect, the pages will look more like image-based pages generated by scanning devices. It should be noted that this kind of processing may affect text selection, full-text search, and copying, so it is suitable for final submission versions, display versions, or archived copies, and is not recommended as a direct replacement for original files that still need to be edited and searched.

4. Large batches of files are not suitable for manual one-by-one conversion

If there is only one file, printing or other conversion methods may be enough; but if the number of files is large, setting colors, resolution, and output locations for each one creates a lot of repetitive work. The value of batch office software lies in one-time import, one set of parameters, and continuous processing of multiple files, thereby reducing the probability of missed processing, incorrect naming, or inconsistent parameters.

2. Effect preview: what changes before and after processing

Before processing: standard electronic text-based PDF

The image below shows the PDF before conversion. The page text and lines are relatively smooth, colors such as blue titles can be displayed normally, and the overall appearance clearly has the characteristics of an electronically typeset document. From the page number in the reader, it can be seen that this is a multi-page PDF.

This type of file is usually directly exported from doc, docx, WPS documents, or other electronic materials. Its advantages are clear display and possibly searchable and copyable text, but its appearance is not like paper material that has been printed and rescanned. If the business requirement is a copy-scan style, further processing is needed.

After processing: page effect close to a black-and-white copy scan

After conversion, the page takes on a visual style closer to a black-and-white photocopy. The original blue title is unified into black, the text edges show image-like characteristics, and the page overall resembles a PDF regenerated after scanning a paper document.

From the before-and-after comparison, it can be seen that this function does not simply modify the reader's display mode, but rather converts PDF pages into a scan effect. The example uses the "pure black and pure white" color mode and "clear (200 PPI)" image clarity, which is more suitable for course materials, notices, forms, and ordinary archived documents that are mainly black text.

3. Steps for batch converting text-based PDFs into a copy-scan effect

Step 1: Enter the PDF tools and find the scan conversion function

After opening HeSoft Doc Batch Tool , select "PDF Tools" from the function categories on the left. The page will display various PDF batch processing functions, including page cropping, page layout adjustment, page to image, color PDF to black and white, and more. Find and click "Convert PDF to scan effect".

The purpose of this step is to enter the dedicated scan effect conversion process. The function description in the screenshot is to batch convert PDF pages into an image effect similar to paper scans, so it is suitable for the current need to uniformly convert multiple text-based PDFs into image-based, scan-like pages. Do not mistakenly select "Convert color PDF to black and white": the latter mainly changes color, while "Convert PDF to scan effect" better matches the goal of scan-like page processing.

Step 2: Add multiple PDFs to be processed at once

After entering the function page, the first stage is "Select records to process". The upper right corner of the interface provides two entry points: "Add files" and "Import files from folder". If the files are scattered in different directories, you can use "Add files"; if the PDFs to be processed are already concentrated in the same folder, using "Import files from folder" will be more efficient.

After the files are added, the list will display information such as name, path, extension, creation time, and modification time. In the screenshot, 4 PDFs were imported at once, and the total record count at the bottom is 4. At this point, you should first check the number and names of the files to confirm there are no omissions or wrong selections. If a file does not need to be processed, you can remove it from the current task using the delete icon on the right side of the corresponding record; if you need to reselect, you can also use "Clear" at the top. After confirming everything is correct, click "Next".

Batch import is the most time-saving part of the whole process. Users do not need to open 1.pdf, 2.pdf, 3.pdf, and 4.pdf separately and repeat operations; instead, these files can share the subsequent processing parameters.

Step 3: Select the color mode for the scanned document

The second stage is "Set processing options". The required option "Color mode" in the interface provides three methods: "Pure black and pure white", "Color", and "Grayscale".

Pure black and pure white: suitable for text, black-and-white tables, notices, exam papers, and general office materials. The example screenshot selects this mode, and after conversion, colored titles will become black, making the page closer to a common black-and-white photocopy.

Color: suitable for documents that must retain colored seals, images, annotations, or chart distinctions. It can also produce a scan-like page, but it does not actively convert all colors to black and white.

Grayscale: suitable for materials that do not require preserving color but still need to retain light and dark gradations. For example, pages containing photos, shadows, or gradient graphics usually preserve details better with grayscale than with pure black and white.

The choice should be based on the file content and submission requirements. If the document contains colored annotations or seals that must be identifiable, it is not appropriate to directly use pure black and pure white; if the file is mainly ordinary text and the goal is to create a black-and-white copy-scan effect, then pure black and pure white can be preferred.

Step 4: Set image clarity

On the same settings page, you can also choose image clarity. The interface provides options such as "Basic (96 PPI)", "Normal (150 PPI)", "Clear (200 PPI)", "HD (300 PPI)", and "Custom". The screenshot uses "Clear (200 PPI)".

Basic or normal clarity is suitable for scenarios mainly viewed on screen and sensitive to file size; 200 PPI usually balances ordinary text reading and processing efficiency; 300 PPI is more suitable for small text, complex tables, or materials with higher printing clarity requirements, but the higher the clarity, the larger the data volume after conversion usually becomes, and batch processing time and output file size may also increase accordingly. When processing a certain type of material for the first time, it is recommended to first select one representative PDF for a trial conversion, and then decide whether to apply the same parameters to all files.

Step 5: Set the save location and start batch processing

After completing the color mode and image clarity settings, click "Next" and follow the interface process to enter "Set save location". To avoid confusing output files with source files, it is recommended to select a separate target folder and ensure there is enough disk space. Then enter the "Start processing" stage, launch the batch task, and wait for the software to finish.

Here you should keep the original text-based PDF and do not delete the source files before confirming the effect. After processing is complete, you can spot-check the first file, one in the middle, and the last file from the output location to confirm that the page count, orientation, text clarity, and color mode meet expectations. If the contents of different files vary greatly, for example some are pure text and some contain color charts, it is recommended to split them into two batches and set parameters separately.

4. How to choose more appropriate parameters

Ordinary text materials

For notices, policies, course handouts, text reports, and similar content, "pure black and pure white + clear (200 PPI)" can be used. This combination is the same as the example and usually produces a more intuitive black-and-white copy-scan effect.

Materials with photos or gradient graphics

Pure black-and-white mode may reduce intermediate tones, and details in photos and light-colored areas need special attention. In this case, you can try grayscale first; if the color itself carries information, choose color mode.

Small fonts or dense tables

If the page contains small-font annotations, dense data, or thin-line tables, you can test HD (300 PPI). However, you should not simply pursue higher values; you should also consider output size, processing time, and the actual reading device comprehensively.

5. Common problems and precautions

1. Can the text still be edited directly after conversion?

The core of scan effect conversion is to make the page present an image-like appearance, so the conversion result is usually not suitable as a working draft for continued editing. When content needs to be modified, you should go back to the original Word, docx, doc, WPS, or original text-based PDF to make changes, and then regenerate the scan effect version.

2. Why does the colored title turn black after conversion?

This is a normal result after selecting the "pure black and pure white" mode. This mode converts the page into a black-and-white effect. If blue titles, red seals, or color charts must be preserved, switch to "Color"; if only light and dark gradations need to be retained, you can test "Grayscale".

3. Is higher clarity always better?

Not necessarily. Higher PPI is suitable for fine content, but it may also bring larger files and longer processing time. For ordinary office text, you can start testing from 200 PPI, and only increase to 300 PPI when details are insufficient.

4. Why should sampling tests be performed before batch processing?

Different PDFs have different font sizes, backgrounds, image proportions, and color compositions. The same set of parameters may not be suitable for all materials. First convert one or a small number of files as a trial, so that problems such as loss of light-colored text, insufficient image gradation, or oversized files can be discovered in advance and the entire batch can be prevented from needing rework.

5. How to avoid overwriting or confusing the original files?

It is recommended to create two folders, "original text version" and "scan effect version", and maintain a clear naming rule after output. Do not delete the source files before verification is complete, and confirm that the page count of the output files is consistent with the original files.

6. Summary

To make a large number of text-based PDFs into a copy-scan effect, there is no need to print and rescan them one by one. Using HeSoft Doc Batch Tool , you can enter "PDF Tools" and then "Convert PDF to scan effect", add files in batch, and uniformly select pure black and pure white, color, or grayscale mode, and set 96 PPI, 150 PPI, 200 PPI, 300 PPI, or custom clarity. Compared with manual one-by-one conversion, this batch processing method can significantly reduce repetitive clicking and file organization work, while keeping the same output standard consistent across the same batch of materials.

In actual operation, it is recommended to first select one sample according to the document content and test it with appropriate parameters such as 200 PPI; after confirming that text, tables, images, and page counts are all normal, import all PDFs to execute the batch task. Now you can organize the PDF files that need to be processed, create an independent output directory, and complete the conversion according to the steps in this article.