PDF files are commonly used for resumes, invoices, application forms, business proposals, product catalogues, reports, and official documents. Their main advantage is that the layout usually stays consistent across different devices. However, making changes inside a PDF can sometimes feel difficult, especially when you need to add a new image or replace an existing one.
You may want to insert a company logo, add a profile photograph, place a scanned signature, update a product image, or remove an outdated graphic. Fortunately, you do not always need expensive desktop software. A reliable online PDF editor can help you add, move, resize, replace, or remove images directly from your web browser.
In this guide, you will learn how to add or replace images in a PDF online while maintaining good quality and keeping the document properly formatted.
Why Would You Need to Add an Image to a PDF?
Images can make a PDF more informative, professional, and visually appealing. There are many situations in which adding or replacing an image becomes necessary.
- Adding a company logo to an invoice or business document
- Inserting a photograph into a resume or application form
- Adding a scanned signature to an agreement
- Updating product photos in a catalogue
- Replacing an old logo with a new brand identity
- Adding a stamp, seal, icon, or certification mark
- Removing an incorrect or outdated image
- Moving an image that is covering important text
An online PDF editor can make these changes without requiring you to convert the document into Word or recreate the entire file.
What You Need Before Editing the PDF
Prepare the following items before you begin:
- The PDF file you want to edit
- The image you want to add or use as a replacement
- A modern browser such as Chrome, Edge, Firefox, or Safari
- A stable internet connection when using an online service
For the best result, use a clear and properly cropped image. PNG files are generally suitable for logos, signatures, icons, and graphics with transparent backgrounds. JPG or JPEG files are usually better for normal photographs and product images.
How to Add an Image to a PDF Online
The exact buttons may vary depending on the PDF editor you use, but the basic process is normally similar.
Step 1: Open an Online PDF Editor
Open a PDF editing website in your browser. Make sure you choose an actual PDF editor rather than a basic PDF viewer. A viewer may allow you to read the document, but it may not provide tools for adding or replacing images.
Look for an option such as Edit PDF, Upload PDF, Select PDF File, or Open Document.
Step 2: Upload Your PDF File
Click the upload button and select the PDF from your computer, phone, or tablet. Many editors also support drag-and-drop uploading.
Wait until every page has loaded completely. A large document or a PDF containing many high-quality images may take slightly longer to open.
Step 3: Select the Image Tool
Once the PDF opens, check the editor toolbar for an image-related option. It may be labelled as:
- Add Image
- Insert Image
- Upload Image
- Photo
- Image
Click the appropriate option and select the image from your device.
Step 4: Place the Image on the PDF Page
After uploading, the image should appear on the PDF page. Click and drag it to the required position.
For example, you can place:
- A logo at the top of an invoice
- A photograph beside the contact details in a resume
- A signature above a signature line
- A product image inside a catalogue section
- A stamp near an approval area
Check that the image is not covering any important text unless that is your intention.
Step 5: Resize the Image
Most PDF editors display small handles around the selected image. Drag one of the corner handles to make the image larger or smaller.
Resizing from a corner usually maintains the original proportions. Avoid stretching only one side because this may make the image look distorted.
Step 6: Move and Align the Image
Click the image and drag it until it is properly aligned. Leave enough space between the image, page edges, headings, and paragraphs.
Some advanced editors may also provide options to:
- Rotate the image
- Change its opacity
- Bring it forward
- Send it behind another element
- Duplicate it
- Align it with other content
Step 7: Review and Apply the Changes
Once the image is in the correct position, click outside the image or choose an option such as Apply, Done, Save, or Finish.
Review the complete page carefully before exporting the document.
Step 8: Download the Edited PDF
Click the download, save, or export button. Save the updated document with a new file name so that the original PDF remains available.
Example file names include:
- invoice-updated.pdf
- resume-with-photo.pdf
- signed-application.pdf
- catalogue-new-images.pdf
How to Replace an Existing Image in a PDF
There are two common ways to replace an image inside a PDF.
Method 1: Replace the Image Directly
Some advanced PDF editors can recognise an existing image as a separate object. Click the old image and check for an option such as Replace, Change Image, or Swap Image.
Select the new image from your device. The editor may automatically keep the same size and position as the previous image. You can then make any necessary adjustments.
Method 2: Remove or Cover the Old Image
If direct replacement is not available, first try selecting and deleting the old image.
When the old image cannot be selected, use a whiteout tool or a shape with the same colour as the page background. Cover the existing image completely and then place the new image over the same area.
This method works best on a plain white background. It may be more difficult when the image is placed over a coloured or patterned background.
How to Remove an Image from a PDF
Click the image you want to remove. If a selection border appears, press the Delete key or choose the delete option from the editor toolbar.
If the image cannot be selected, it may be part of a flattened or scanned PDF. In that case, you may need to:
- Cover the image using a whiteout tool
- Crop the page when the image is close to an edge
- Use an advanced PDF content editor
- Use OCR when the entire page is stored as an image
After removing the image, check whether the empty area affects the document layout.
How to Maintain Good Image Quality
An image may look clear before uploading but appear blurry after it is added to a PDF. The following tips can help you maintain better quality.
Use a High-Quality Original Image
Avoid enlarging a very small image. When a low-resolution image is made much larger, it can become blurry or pixelated.
Choose the Correct File Format
Use PNG for:
- Logos
- Signatures
- Icons
- Transparent graphics
- Screenshots containing text
Use JPG or JPEG for:
- Photographs
- Product images
- Scanned pictures
- Images containing many colours
Maintain the Original Proportions
Resize the image using a corner handle whenever possible. This helps prevent stretching and keeps the image looking natural.
Avoid Unnecessary Compression
Some online tools reduce image quality to decrease the PDF file size. After downloading the edited file, zoom in and confirm that the image remains clear.
Review the Exported PDF
Open the downloaded PDF and verify that:
- The image is visible
- The image position is correct
- The image is not blurry
- No important text is covered
- The page layout remains unchanged
- All original pages are included
How to Add a Signature Image to a PDF
Adding a signature is one of the most common reasons for inserting an image into a PDF.
Sign your name on clean white paper and take a clear photograph or scan it. Crop the image closely so there is not too much empty space around the signature. A transparent PNG usually provides the cleanest result.
Open the PDF in an editor, select the image tool, and upload the signature. Resize it until it looks natural and place it above the required signature line.
Keep in mind that an image of a handwritten signature is not always the same as a verified digital signature. Some legal, banking, or government documents may require a certificate-based digital signature.
You can also read our guide on how to sign a PDF online for additional information.
Can You Add Images to a PDF on a Mobile Phone?
Yes. Many online PDF editors work on Android phones, iPhones, and tablets.
- Open the PDF editor in your mobile browser
- Upload the PDF from your device
- Select the image tool
- Choose an image from your gallery or file manager
- Move and resize the image
- Download the edited PDF
Editing on a small screen may be less precise. For professional documents, using a desktop or laptop is generally more convenient.
Privacy and Security When Editing PDFs Online
PDF documents may contain personal, financial, employment, medical, or business information. Always check how an online editor handles uploaded documents.
Before uploading a sensitive PDF, verify:
- Whether the website uses HTTPS
- Whether files are processed inside the browser
- Whether files are uploaded to an external server
- How long uploaded documents are stored
- Whether files are automatically deleted
- Whether the privacy policy explains file handling clearly
Avoid uploading confidential files to unknown or untrusted websites.
Common Problems When Adding Images to PDFs
The Image Is Too Large
Use the corner handles to reduce its size. You can also resize or compress the image before uploading it.
The Image Looks Blurry
Use a higher-resolution original image and avoid enlarging a small image beyond its natural dimensions.
The Image Covers Existing Text
Move the image to an empty section or reduce its size. Some editors also allow you to send the image behind other content.
The Existing Image Cannot Be Selected
The PDF may be scanned or flattened. In such cases, the entire page may be stored as one image rather than separate editable objects.
The Downloaded PDF Is Too Large
Compress the image before inserting it or use a PDF compression tool after completing the edits.
The Transparent Background Appears White
Make sure the image is saved as a proper PNG file. Some editors may not fully support transparency, so always test the exported PDF.
Frequently Asked Questions
Can I add a JPG image to a PDF?
Yes. Most online PDF editors support JPG and JPEG files. Upload the PDF, choose the image tool, select the JPG file, and place it on the required page.
Can I replace a company logo in a PDF?
Yes. If the existing logo is selectable, you can delete or replace it directly. Otherwise, cover the old logo and place the new one over the same area.
Can I add multiple images to one PDF?
Yes. You can usually add several images to one or more pages. Review the position and quality of every image before downloading the PDF.
Can I edit an image inside a scanned PDF?
A scanned PDF often stores the complete page as a single image. Individual elements may not be directly editable without OCR or advanced content-editing software.
Will adding an image reduce PDF quality?
It depends on the original image quality and the export settings used by the editor. Use a clear image and check the final downloaded PDF before sharing it.
Is it safe to add images to a PDF online?
It can be safe when the website uses HTTPS, provides a clear privacy policy, and deletes uploaded files promptly. Avoid using unknown websites for confidential documents.
Final Thoughts
Adding or replacing an image in a PDF does not have to be complicated. With a suitable online PDF editor, you can upload a document, insert a photograph, logo, signature, or graphic, resize it, position it correctly, and download the updated file within a few minutes.
For the best results, always use a high-quality image, maintain its original proportions, review every page, and keep a backup copy of the original PDF.
Jobscrib helps users work with PDF documents through a simple browser-based experience. You can also read our guide on how to edit text in a PDF.