Why Word Pastes Screenshots as Bitmap Instead of PNG From Snipping Tool

When you take a screenshot using the Snipping Tool and paste it directly into Word, the image often appears as a Bitmap file rather than the expected PNG format. This behavior results in larger file sizes and reduced image quality compared to PNG. The root cause lies in how Word handles clipboard data and the specific image format the Snipping Tool places on the clipboard. This article explains why Word prioritizes Bitmap over PNG during paste, the technical details behind the clipboard format negotiation, and how to force Word to paste screenshots as PNG.

Why Word Selects Bitmap Over PNG From the Clipboard

The clipboard in Windows supports multiple data formats for the same piece of content. When you capture a screenshot with the Snipping Tool, the tool places the image on the clipboard in several formats simultaneously. These formats include Bitmap, PNG, and sometimes a device-independent bitmap. Word, when you press Ctrl+V, does not simply pick the smallest or highest-quality format. Instead, Word uses a format negotiation process based on the target device format list stored internally. This list ranks formats by their suitability for editing and compatibility with Word’s internal image engine.

Bitmap is ranked higher than PNG in this list for several reasons. Bitmap is an uncompressed format, which means Word can edit it directly without decompression overhead. PNG is compressed, and while it produces smaller files, Word must decompress it before allowing any image manipulation such as cropping, resizing, or color adjustments. Word prioritizes editing flexibility over file size during the paste operation. As a result, even though the Snipping Tool provides a PNG version, Word ignores it and inserts the Bitmap version.

The Role of the Clipboard Data Object

The Snipping Tool uses the Windows clipboard API to create a data object that contains multiple format entries. When you copy a screenshot, the data object includes CF_DIB (device-independent bitmap), CF_BITMAP, and a custom format for PNG. Word queries the data object for available formats and matches them against its internal supported format list. The first match in Word’s priority order wins. Since CF_DIB and CF_BITMAP appear before PNG in Word’s list, the Bitmap format gets selected. This behavior is by design and is not a bug in either the Snipping Tool or Word.

How to Force Word to Paste Screenshots as PNG

To override the default format selection, you must use the Paste Special command instead of the standard Ctrl+V. Paste Special lets you choose the exact format Word uses when inserting clipboard content. The following steps work in Word for Microsoft 365, Word 2021, Word 2019, and Word 2016 on Windows 10 and Windows 11.

1. Capture the screenshot with Snipping Tool
   Open Snipping Tool, take a screenshot, and click the Copy button in the Snipping Tool toolbar. This places the image on the clipboard with multiple formats.
2. Position the cursor in Word
   Click at the location in your Word document where you want the screenshot inserted.
3. Open the Paste Special dialog
   On the Home tab, click the arrow below the Paste button to open the Paste menu. Select Paste Special from the dropdown list. Alternatively, press Alt+Ctrl+V on your keyboard.
4. Select PNG as the paste format
   In the Paste Special dialog, select the Paste option. In the As list, scroll down and choose PNG. The exact text may appear as PNG or Portable Network Graphics depending on your Word version. Click OK.
5. Verify the inserted image format
   Right-click the pasted image and select Size and Position. On the Size tab, look at the file type listed near the bottom of the dialog. It should indicate PNG instead of Bitmap. The document file size will also be smaller compared to a Bitmap paste.

Alternative Method: Paste as Picture With PNG Default

If you paste screenshots frequently, you can add the Paste as Picture command to the Quick Access Toolbar. This command inserts the image using the last selected format in Paste Special. After you use Paste Special to select PNG once, the Paste as Picture button will reuse the PNG format for subsequent pastes until you change it.

1. Add Paste as Picture to the Quick Access Toolbar
   Click the Customize Quick Access Toolbar arrow at the top of the Word window. Choose More Commands. In the Choose commands from dropdown, select All Commands. Scroll to Paste as Picture, select it, and click Add. Click OK.
2. Set the PNG format once
   Use Paste Special to paste a screenshot as PNG as described above. Word remembers this format for the Paste as Picture button.
3. Use the button for future pastes
   After copying a screenshot, click the Paste as Picture button on the Quick Access Toolbar. Word inserts the image as PNG without opening the Paste Special dialog.

If Word Still Pastes Screenshots as Bitmap After Using Paste Special

Paste Special Shows No PNG Option

If the Paste Special dialog does not list PNG, the Snipping Tool may not have placed a PNG format on the clipboard. This can happen if you are using an older version of the Snipping Tool that does not support PNG. Update Windows to the latest version to ensure the Snipping Tool includes PNG support. Alternatively, use the Snip & Sketch tool, which always includes PNG in the clipboard data object.

Paste Special Shows PNG but Word Still Inserts Bitmap

In rare cases, Word may ignore the selected format due to an add-in conflict or a corrupted Normal.dotm template. Test by starting Word in safe mode. Press the Windows key, type winword /safe, and press Enter. Try the Paste Special steps again. If PNG works in safe mode, disable add-ins one by one to find the conflicting add-in. Go to File > Options > Add-Ins, select COM Add-ins from the Manage dropdown, and click Go. Clear the checkboxes for all add-ins, then re-enable them one at a time while testing paste behavior.

Word Converts PNG to Bitmap After Saving and Reopening

If you paste a screenshot as PNG but Word converts it to Bitmap after you save and reopen the document, the issue is likely the image compression setting in Word. Go to File > Options > Advanced. Under Image Size and Quality, clear the checkbox for Do not compress images in file. Set the Default resolution to 220 ppi or higher. This prevents Word from recompressing and converting the image to Bitmap. Note that this setting applies to the current document only unless you check the Apply to all new documents checkbox at the top of the section.

Word Paste Format Behavior: Bitmap vs PNG vs JPEG

Item	Bitmap	PNG
Compression	None (uncompressed)	Lossless compression
File size in document	Large	Small
Transparency support	No	Yes
Editable in Word without decompression	Yes	No (decompression required)
Default paste format in Word	Yes	No (must use Paste Special)
Quality degradation after multiple saves	None	None

The table above summarizes the key differences between Bitmap and PNG formats when pasted into Word. Bitmap offers immediate editability at the cost of file size, while PNG provides smaller file sizes and transparency support but requires an extra step to insert via Paste Special.

You can now control whether Word pastes screenshots from the Snipping Tool as Bitmap or PNG by using Paste Special or the Paste as Picture button. For documents where file size matters, such as reports with many screenshots, always use Paste Special and select PNG. To make this your default behavior, add the Paste as Picture command to the Quick Access Toolbar and set the format once. As an advanced tip, you can also automate PNG pasting using a simple VBA macro that runs the PasteSpecial command with the PNG format argument. This macro can be assigned to a keyboard shortcut for one-key PNG insertion.