Formatting Issues

Why Compressing Pictures Does Not Reduce Word File Size & How to Fix It

John Wilson Sep 30, 2026 870 views

Question details

The user needs to reduce a large Word document's file size, but the built-in 'Compress Pictures' option only reduces the size by a negligible amount despite having all compression settings enabled.

Why Compressing Pictures Does Not Reduce Word File Size

Product: Microsoft Word
Device & OS: not provided
Scenario: Attempting to shrink the file size of a large document containing multiple images to save storage space or share the file via email.
Observed behavior: The document's file size remains largely unchanged after applying picture compression, likely because Word retains underlying image data or handles the edits inefficiently.

Before you start

Check your document's current file size to establish a baseline, and make sure you save a backup copy in case you need to revert any permanent image cropping or resolution changes.

Solution 1Recommended

Discard Editing Data and Delete Cropped Areas

Force Word to delete cached edits and cropped image sections, which often bloat the file size even after compression.

Microsoft Word typically retains original image data so that you can undo edits or restore cropped areas later. Because of this, standard compression does not actually delete the hidden pixel data. To see a noticeable file size reduction, you must tell Word to permanently discard this data.

Open Image Quality Options

Click on 'File' in the top-left corner of Microsoft Word, select 'Options' at the bottom, and click on the 'Advanced' tab.

Discard Editing Data

Scroll down to the 'Image Size and Quality' section. Check the box that says 'Discard editing data' and uncheck 'Do not compress images in file'.

Access Compress Pictures

Select any image in your document. Go to the 'Picture Format' tab on the ribbon and click 'Compress Pictures'.

Apply Final Compression

In the pop-up window, check 'Delete cropped areas of pictures' and uncheck 'Apply only to this picture' (to apply to the whole document). Choose your target resolution and click 'OK'. Save the document.

Discard Editing Data and Delete Cropped Areas

Finalize Edits First: Only perform this step after you have completely finished resizing and cropping the images in your document, as you will not be able to restore the original image sizes afterward.

Solution 2

Compress Images Externally Before Inserting

Use a dedicated image editing program to reduce the image file size before bringing it into Microsoft Word.

Solution 3

Use the Cut and Paste Special Method

Convert images with heavy edit data into flat JPEG or PNG formats directly inside the document.

Efficient Document Management Tool

Effortlessly Compress Document Size with WPS Writer

If Microsoft Word fails to properly compress your file, try WPS Writer. It features a built-in, dedicated File Compression tool that intelligently handles image resolution and discarded data, reducing your document's footprint in just a few clicks without compromising visual clarity.

1. Open Your Document: Launch WPS Writer and open the large document you need to compress.
2. Access File Compression: Navigate to the 'Tools' tab on the top ribbon and click on 'File Compress'.
3. Select Compression Level: In the File Compress dialog, choose your desired image quality and compression level based on whether you need the file for standard viewing or high-quality printing.
4. Apply and Save: Click the 'Compress' button. WPS Office will process all images efficiently and save the optimized, smaller version of your document.

Dedicated File Compressor for highly efficient document size reductionPerfectly compatible with Microsoft Word document formats (.docx, .doc)Intuitive and lightweight application that runs smoothly on any device

microsoft office alternative - wps office

Frequently Asked Questions

Does cropping an image in Word reduce the file size?

By default, no. Microsoft Word retains the cropped areas of the image so that you can reset or adjust the crop later. To reduce the file size, you must use the Compress Pictures tool and explicitly check 'Delete cropped areas of pictures'.

What is the best picture resolution setting for standard Word documents?

For documents that will primarily be viewed on screens or shared via email, the 'Web (150 ppi)' or 'Email (96 ppi)' settings are usually sufficient and provide the best balance between visual quality and small file size.

Why does Word retain original image editing data?

Word retains original editing data as a non-destructive editing feature. This allows users to undo picture effects, reset contrast/brightness, or restore original dimensions even after saving and reopening the document. However, this caching process heavily inflates the document's total file size.

Are there limits to how small Word can compress a picture?

Yes. Word's built-in compression only adjusts the DPI (dots per inch) and removes crop data. It does not employ advanced compression algorithms used by dedicated image editors like Photoshop. If an image is inherently complex, external tools are required for deeper compression.

Document & File Issues