How to batch remove images and text in the same position across multiple PDFs? A fixed-area bulk processing tutorial

When multiple PDFs have figure images, old logos, QR codes, marginal text, or scanning artifacts appearing at the same location, there is no need to manually edit each file or page one by one. This article explains, with actual before-and-after results, how to use HeSoft Doc Batch Tool to create a rectangular deletion area, batch import PDFs, and execute the task by all pages, odd pages, even pages, or custom pages. The tutorial focuses on explaining how to select units such as coordinates in the upper-left corner of the page, percentages, and centimeters, and also provides suggestions for backup, trial processing, layout grouping, and result spot-checking to help users more safely complete batch removal of localized content in PDFs.

In the process of organizing e-books, updating teaching materials, archiving corporate documents, and cleaning up scanned copies, users often need to delete content at the same position across multiple PDFs. For example, a batch of lecture notes may have outdated character illustrations placed on the left side of each page, a set of product manuals may contain expired QR codes on every page, historical reports may have old names in the page margins, or scanned PDFs may have binding shadows in fixed areas. When the number of files is small, manual modification is possible, but when the task expands to dozens of PDFs, each with hundreds of pages, processing page by page takes up a great deal of time.

The common feature of these tasks is not that the content names are the same, but that the content positions on the pages are the same. Therefore, a more efficient approach is to define a fixed rectangle: starting from the upper-left corner of the page, set the rectangle's distance from the left and top edges, then specify the width and height, and let the office software batch-delete the page elements within that range. This article will combine the operating interface of HeSoft Doc Batch Tool to fully explain the workflow from function selection, file import, and area configuration to result verification.

Applicable scenarios: batch cleanup of fixed-position content

"Delete content in a specified area of a PDF" is suitable for handling tasks with clear coordinate patterns. As long as the objects to be deleted in different PDFs are located at the same or similar positions, one set of parameters can be reused without needing to reselect the area in each file.

Typical scenarios include:

• Repeated character illustrations, decorative images, and prompt images in textbooks, e-books, or course lecture notes;
• Old logos, old names, addresses, phone numbers, or promotional slogans in corporate PDF templates;
• QR codes, URLs, version markers, and fixed notes in page corners;
• Answer, explanation, or teacher prompt areas with uniform positions in exam papers and workbooks;
• Black edges, binding marks, stray marks outside the page, and invalid images on scanned PDFs;
• Documents where only fixed areas on the first few pages, last few pages, odd pages, or even pages need to be cleaned.

This method does not require the deleted object to be a standalone image. As long as the content falls within the configured rectangular range, it can be handled as an area cleanup task. However, this also means that normal content within the rectangle also needs to be carefully protected. Before execution, you should check whether there is body text, page numbers, table borders, or other elements that must be preserved around the target area.

Effect preview: from character image to blank area

PDF page before processing

In the example page, there is a large character image on the left side, a body text area with a green border on the right side, a chapter title at the top of the page, and a page number at the bottom. The goal of this operation is only to remove the character image without changing the text content on the right or other layout elements.

It can be seen that the range occupied by the target image is relatively independent, with a certain amount of blank space between it and the body text on the right. This kind of layout is very suitable for batch processing according to rectangular coordinates. If a batch of PDFs follows a unified template, the position of the character image can be converted into left distance, top distance, area width, and area height.

PDF page after processing

After the batch task is completed, the position where the character image was on the left becomes blank, while the title, the text box on the right, the page number, and other content outside the rectangle remain.

This comparison shows that fixed-area deletion does not reflow the PDF layout, nor does it automatically move the body text on the right to the left. Its function is to clear the content within the specified range, while the original page size and the rest of the layout remain in their original positions. Therefore, if users want other content to automatically fill the space after the object is deleted, that belongs to another type of layout rearrangement requirement and should not be confused with area clearing.

Operation step 1: Find the feature for deleting content in a specified area of a PDF

After launching HeSoft Doc Batch Tool , go to "PDF Tools" in the left navigation bar. The software is a batch processing tool for office documents, and its feature list is organized into categories such as content processing, merging and splitting, security protection, page processing, headers and footers, and format conversion.

After selecting "Content Processing", find "Delete content in a specified area of a PDF" in the list. The description below this feature states that it batch-deletes all content within a specified rectangular area of PDF files, which matches the current requirement.

When selecting the feature, do not confuse it with adjacent tools. For example, "Delete images in PDF" focuses on deleting image objects, and "Remove links in PDF" is used to process links, while "Delete content in a specified area of a PDF" is centered on page position. If the target area contains images, text, or lines at the same time, processing by area usually better matches the requirement.

Operation step 2: Import the PDFs to be batch processed

After entering the feature page, the workflow first stays at "Select records to process". Click "Add files" to select one or more PDFs; if the files are already gathered in a certain directory, you can also use "Import files from folder". For dozens of files of the same type, importing them all from a folder can reduce the effort of repeated selection.

The file list in the screenshot already contains 4 imported PDFs, named 1.pdf, 2.pdf, 3.pdf, and 4.pdf. The list also shows the path, extension, creation time, and modification time, with the total record count summarized as 4 at the bottom. When there are many files, you can use this information to check the source directory and avoid adding test files, old versions, or unrelated documents to the formal task.

It is recommended to organize the folder before importing: put PDFs that need to use the same set of rectangle parameters together, and place files with different sizes or different templates separately. This makes importing easier and also reduces the risk of batch mishandling. If there are incorrect records in the list, you can remove them through the operation on the right; if the overall selection is wrong, you can clear it and add files again.

After checking the number of files and paths, click "Next" at the bottom of the page to proceed to processing options.

Operation step 3: Determine which pages need content deletion

On the processing options page, the first section is "Processing range". The current interface provides choices such as all pages, the first few pages, the last few pages, odd pages, even pages, and custom.

When choosing the page range, you can make judgments according to the following ideas:

• All pages: Use when content to be deleted exists at the same position on every page;
• First few pages: Suitable for cleaning fixed elements on covers, tables of contents, or the beginning of documents;
• Last few pages: Suitable for processing appendices, back covers, or promotional areas on the last pages;
• Odd pages and even pages: Suitable for PDFs with double-sided layout and different left-right page structures;
• Custom: Use when modifying only specific page numbers or a certain page range.

Incorrect page range settings will cause pages that do not need modification to be processed as well. For example, if the content to be deleted exists only on even pages, but all pages are selected, then normal content at the same coordinates on odd pages may be affected. Therefore, before configuring the rectangle area, the page numbers to be processed should first be confirmed clearly.

Operation step 4: Set the deletion rectangle starting from the upper-left corner of the page

The processing options page clearly states: "The rectangle area starts from the upper-left corner of the page." This sentence is key to understanding the parameters. A PDF page can be regarded as a coordinate plane, with the upper-left corner as the starting position, extending rightward horizontally and downward vertically to determine the rectangle to be deleted.

The software requires four parameters:

1. Distance from left edge of page: Determines where the rectangle starts horizontally on the page;
2. Distance from top edge of page: Determines where the rectangle starts vertically on the page;
3. Area width: Determines the range covered by the rectangle to the right;
4. Area height: Determines the range covered by the rectangle downward.

For example, the screenshot uses percentage as the length unit, with a left distance of 20, a top distance of 40, an area width of 20, and an area height of 60. This can be understood as: starting from about 20% of the page width from the left and about 40% of the page height from the top, create a rectangular area with a width of about 20% of the page and a height of about 60% of the page. These values are used to demonstrate the current case. When processing other PDFs, they should be remeasured according to the actual layout and should not be mechanically copied.

In addition to percentage, the interface also provides centimeters, inches, and points. Each unit has its applicable conditions:

• If the page proportions of the files are consistent but actual paper sizes may differ, percentage can be tested first;
• If all PDFs are fixed A4 or another uniform size, and the precise physical distance is known, centimeters can be used;
• If the source documents were produced with imperial measurements, inches can be selected;
• If fine adjustment based on PDF page points is needed, points can be used.

When configuring, it is recommended to first estimate the upper-left corner position of the target object, and then leave a reasonable margin for the width and height. If the margin is too small, edge residue may remain; if it is too large, adjacent body text may be deleted. If the target is very close to the body text, test with one file first, make multiple fine adjustments, and then execute in batch.

Operation step 5: Select the output location and execute the task

After the parameters are set, click "Next". According to the workflow prompts at the top of the page, the subsequent steps include "Set save location" and "Start processing". For the save location, it is recommended to select a new empty folder and use an easily recognizable directory name to distinguish source files from result files.

Keeping the original files is very important. Deleting content in a specified area is a content modification operation. If the coordinates, page range, or unit selection are inappropriate, the relevant content in the output files may not meet expectations. As long as the source files remain, you can adjust the parameters and process again; if the only original copy is overwritten directly, the cost of correction will increase significantly.

After completing the save settings, enter the start processing stage. Wait for the software to finish batch execution, and then open the output PDFs to check the effect. When there are many files, it is not necessary to browse all results page by page, but at least spot-check different files, and examine the first page, middle pages, last page, and pages where the template changes.

How to measure rectangle parameters more reliably

If the precise parameters are not yet known, you can use a "small first, then large" testing method. First set an area slightly smaller than the target object, observe the remaining position after output, and then adjust the left distance, top distance, width, and height. After one or two tests, it is usually possible to gradually approach a suitable range.

You can also estimate based on the ratio between the target object and the page edges. For example, if the left edge of the object is located at about one-fifth of the page width from the left, you can first set the left distance to a value close to 20%; if the object starts from the upper-middle part of the page, set the top distance according to its relative height. Percentage is not equal to pixel value, but is calculated relative to the entire page size, making it especially suitable for batch tasks with a unified template.

If there is a small deviation in the target position among different files, the rectangle can be expanded appropriately, provided that there is no important content around it. If the deviation is large, do not use one overly large area to barely cover all files. Instead, group them by layout and execute multiple tasks separately. Although this adds a small amount of configuration work, it can reduce the risk of deleting body text by mistake.

Common questions and precautions

Can one task process multiple PDFs at the same time?

Yes. The file selection page supports adding multiple files and also supports importing from a folder. The core value of batch processing lies in reusing the same set of page range and rectangle parameters across multiple PDFs, thereby reducing repeated configuration.

What if the target is on the left side of odd pages and the right side of even pages?

The task can be split into two executions. The first time, select odd pages and set the left-side area; the second time, select even pages and set the right-side area. Do not set a large rectangle spanning the entire page just to cover both sides at once, otherwise the body text in the middle may be deleted.

Why is there still some residue near the target after processing?

It may be because the rectangle width or height is insufficient, or because there is a deviation in the left or top distance. Return to the processing options, fine-tune the parameters, and regenerate the results from the source PDF. If the target object has shadows, borders, or decorative lines, these peripheral parts should also be included in the area.

Can the software automatically find the position to delete based on keywords?

The feature used in this article works according to rectangular coordinates, and the screenshot does not show any keyword positioning settings. If the target positions on different pages are not fixed, you cannot rely solely on the same set of area parameters. You should first evaluate the file layout and group the files for processing when necessary.

After deletion, will other content automatically move to fill the blank space?

No. The example results show that after the character image is removed, the original position remains blank, and the body text on the right does not reflow. This feature is used for partial content deletion on the page, not paragraph reflowing in Word, doc, or docx documents.

Are all PDFs suitable for one-time batch processing?

Not necessarily. Files that mix landscape and portrait orientation, have different page sizes, or show obvious changes in template positions should not directly share the same parameters. It is recommended to classify them by paper orientation, page size, and layout, and create separate tasks.

What preparations should be made before formal processing?

First, back up the source files. Second, select a representative PDF for testing, and then confirm the page range and rectangle parameters. After processing, check the number of output files and randomly open multiple results for verification. For contracts, financial statements, archives, or other important materials, it is recommended to increase the sampling ratio.

Summary

When images, text, watermarks, QR codes, or scanned edge marks exist at the same position across multiple PDFs, manually deleting them file by file creates a large amount of repetitive work. Through the "Delete content in a specified area of a PDF" feature of HeSoft Doc Batch Tool , you can define the target position as a rectangle and apply unified rules to multiple PDFs. The entire workflow includes selecting the feature, batch importing files, setting the page range, selecting the length unit, filling in the left distance and top distance, setting the area width and height, and saving and executing the processing.

To balance efficiency and safety, it is recommended to first organize files by layout, test coordinates with a copy, confirm that the before-and-after effects meet expectations, and then execute the batch task on all PDFs. Now you can select a typical file and measure the target area based on the upper-left corner of the page; after the test is accurate, import the remaining PDFs with the same layout, and you will be able to complete fixed-position content cleanup more efficiently.