OmniDocHow to deal with the background becoming white after converting PDF to PPT
After the PDF is converted to PPT, the background becomes white, often because the background color is split into white rectangles, the whole page image or the master is missing. This article teaches you how to determine the source of white and use color, transparency, or the original page image to blend the white background with the original background.
Key points of this article
- First determine which layer the white color comes from: the independent white shape, the white border of the picture, or the slide master background color.
- When the slide background is a solid color or gradient, use the original page color to set the master background and process all pages uniformly.
- After selecting the white rectangle, delete it or set it to no fill, and the background color will be naturally exposed.
- For pages with complex patterns, the original PDF page can be exported as a high-definition picture as the background, and the text layer can be placed on top.
- The scanned PDF needs to be OCRed first and then converted, so that the text and background color can be aligned more easily. However, it still needs to be checked page by page after conversion.
After converting PDF to PPT, a common situation is: the original page with gradient color, dark background or pattern is converted into a white background. The text and pictures are still there, but the overall style is lost. This article is written for those who need to change presentation materials, training courseware or product manuals into editable PPT.
After reading, you will be able to determine where the white color comes from, and remove or replace it as appropriate, so that the white background blends with the original background, and the page is close to its original appearance again.
In most cases, the problem is not "conversion failure", but that the background in the PDF is split into different elements: a full-page image, a white rectangle, or a background color that is not recognized at all. The idea is to first find where the white color comes from, and then choose the corresponding method.
How to combine the white background with the original background? One sentence conclusion: first find out which layer the white color belongs to, then replace or remove the white layer with the original background
| your situation | Recommended practices | reason |
|---|---|---|
| The original page is a solid color or gradient, and the entire page is white after conversion. | Use the color picker tool to pick colors on the original page and set the same background in the slide master | The background color belongs to the entire set of layouts, so unified setting saves trouble. |
| The original page has a pattern, texture or photo background | Export the page as a high-definition image, place it as the background on the bottom layer, and place the text layer on top | The pattern is difficult to restore to its shape, and the entire page is close to the original |
| There is a white rectangle on the page covering the background color | Find it in the selection pane and delete or set to no fill | The white color is an independent shape, and the background color will naturally be revealed after removal. |
| The white comes from the white border surrounding the illustration | Set a transparent color for the picture, or change it to a picture with a transparent background | The white border belongs to the picture itself and needs to be processed at the picture layer. |
First determine what kind of problem it is
| symptoms | Common causes | How to confirm |
|---|---|---|
| The entire page is white, with both text and pictures | The background color is not recognized and the master background is white. | Click on a blank space in the PPT to see if the background is white and there is no picture |
| There is a white frame around the page or a certain area | The white rectangle covers the background color | Click on the white box. If you select a complete rectangle, it will be a shape. |
| The white edge is close to the edge of the picture. | The picture has its own white background | Click on the picture, and if the white edge moves with the picture, it is part of the picture. |
| Background thickening or tensile deformation | The resolution of the whole page picture is low or the proportion is inconsistent. | Check whether the size of the picture matches the proportion of the slide. |
| The background has color, but the text can't be seen clearly. | Insufficient contrast between the text color and the new background | Check the comparison of text color and background color against the original PDF |
# item-by-item troubleshooting and repair
In the order from easy to difficult, do the following four checks:
- Click on the background area in the PDF reader. If the text can be selected, the background color may be a vector shape; if the whole block is selected into a picture, the background is a picture.
two. Click on the blank space in the PPT to confirm that the background of the slide is white. If so, fix the master instead of changing it page by page.
- Open the selection pane, check each page for abnormal white shapes, and make a note of their location and hierarchy.
- Check the contrast between the text and the background color, and adjust the text color if necessary.
when white is a separate shape
Find the white rectangle in the selection pane and delete it directly; if it is responsible for the separation of the layout, it will be changed to no fill. It is recommended that you make a copy before deletion for fallback.
when white is the white edge of the picture
Select the picture, use "set transparent Color" in the picture tool, and click on the white edge area to remove the white. If there are more white edges, or the picture has a gradient, and the transparent color effect is not good, you can switch to a version of the transparent background, or only intercept the content when exporting the original page.
when the background color of the whole page is lost
Solid color or gradient background, use the color tool to take color on the original PDF, and then set the background in the master view, all pages will be updated together. For a page with a complex pattern, use a reader or system screenshot tool to export the page as a high-definition picture, insert it as a background and place it at the bottom. Note: if there is already text in the background image, the editable text layer will overlap it. At this time, delete the text area in the background image, or only use the picture as decoration, and the text will still be retypeset with a text box.
The scanned PDF text is a picture, and it is easy to mismatch the text and background color after conversion. You can first use the PDF editor of the OmniDoc Desktop client (download.omnidoc.top) to do OCR, then export to PowerPoint, and then deal with the background.
# how to avoid the next occurrence
-confirm the PDF type before conversion: digital version or scanned version, and the scanned version is OCR first. -if you can get the original PPT or Word files, the source file conversion is preferred, and the restoration of the background and layout is usually more complete than extrapolating from PDF. -convert and check one or two pages first, confirm the background treatment, and then batch process other pages. -unify the background color into the master to avoid modifying each page separately and facilitate replacement in the future. -keep the original PDF as control. There may be text errors in machine conversion and OCR. Please check the text and numbers page by page before formal report.
# frequently asked questions (FAQ)
1. Can I change the background image directly to the original background image when the background is all white when PDF is converted to PPT?
Sure. Export the original PDF page as a high-definition picture, insert it as a slide background and put it at the bottom. If there is more text on the page, it is recommended to only use the picture as a decoration, and the editable text is still retained in the text box to avoid overlap between the two layers of text.
2. How to quickly tell whether the background is a shape or a picture?
Click on the background area in PPT. If a complete rectangle or full-page picture is selected, it is a separate object; if there is no selected object in the blank, the background may be the background color of the slide itself.
3. What should I do if I can't see the text clearly after removing the white background?
First check the contrast between the text color and the new background color, and change the text to a color with a greater contrast to the background color. If the background color is dark, you can change the title to white and keep the text light or neutral.
4. Each page of the whole courseware is on a white background. Can you change it at once?
Yes. Set a uniform background color in the slide master, and all pages that use the master are updated synchronously. If the background of the original page is different, you need to set it by page or by category.
# Summary
The background turns white after PDF to PPT, mostly caused by the loss of white rectangle, white-edged picture or master background. First find out which layer the white belongs to, and then delete the white shape, set the transparent color, or restore the background with the original page color and picture, you can make the white background fit with the original background.
