A Bates number usually lands sideways, upside down or outside the visible page because the PDF page carries a rotation or a crop that the stamping tool ignored. The page displays turned or trimmed, but the stamp was placed in the page’s unrotated, uncropped coordinates. BatesBind places each label at the bottom right of the visible page, or another corner you choose, and keeps labels upright on rotated and cropped scans, so a mixed production of portrait, landscape and trimmed pages comes out stamped consistently.
This guide explains what is going on inside the file, how to spot the problem pages before you produce, and what to do about scans that are sideways in the image itself.
Stamp a folder of PDFs with labels upright on every page, rotated or not.
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What does the problem look like?
You stamp a production and page through the result. Most pages are fine, but some show one of these:
- Sideways label. The number runs up the right edge of a landscape spreadsheet instead of across the bottom.
- Upside-down label in the top-left corner. The page was scanned upside down and turned in a viewer.
- Missing label. The number is in the file but is not visible, because it sits in an area that is cropped away.
- Label inside the content. The number overlaps a table on a page that was trimmed to remove a scanner border.
Every one of these comes from two page settings defined in the PDF standard.
Why does a Bates stamp come out sideways on a rotated page?
In the PDF format, each page can carry a Rotate value. The PDF specification, ISO 32000-1, defines it as the number of degrees by which the page shall be rotated clockwise when displayed or printed, a multiple of 90, with a default of 0.
That means a landscape page can be stored two ways. It can have a wide page box with no rotation, or a tall page box with Rotate 90. Both look the same on screen. When you turn a page in a PDF viewer and save, the viewer typically records the turn as a rotation rather than redrawing the content.
A stamping tool that writes its label in the page’s own coordinates without accounting for the rotation puts the label at the bottom right of the unrotated page. After the viewer applies the 90-degree turn, the label is in a different corner and runs sideways. With Rotate 180, it ends up upside down in the opposite corner.
There is a second trap in the standard: Rotate is inheritable. It can be set once on a parent node of the document’s page tree and apply to every page below it, so a tool that looks only at each page’s own entry misses it.
Why does a stamp disappear on a cropped page?
Each page also has a MediaBox, the boundaries of the physical medium, and an optional CropBox. ISO 32000-1 says the crop box defines the visible region of the page: when the page is displayed or printed, its contents are clipped to that rectangle. If there is no crop box, it defaults to the media box.
Scans are often cropped after the fact, to trim a black scanner border or to cut a receipt down to size. The full image is still in the file, but only the crop box shows. A stamp placed relative to the media box can fall in the area that is clipped away, so it is present in the file but invisible on screen and in print. The standard also notes that the visible rectangle does not have to start at the corner of the page’s coordinate space, so a tool that assumes it does can land a label in the wrong place even on a page that looks normal.
Here is how the cases line up:
| What you see | Usual cause in the file | Correct placement uses |
|---|---|---|
| Label runs sideways | Rotate 90 or Rotate 270 on the page or a parent | The rotated, displayed page |
| Label upside down in the wrong corner | Rotate 180 | The rotated, displayed page |
| Label missing | Crop box smaller than the media box | The crop box, the visible page |
| Label over content | Crop box offset from the page origin | The crop box, the visible page |
How do you find the problem pages before you produce?
You do not need to inspect the file structure. A quick visual check finds them:
- Sort the thumbnails mentally. Page through the thumbnail view and note every landscape page and every page that looks trimmed.
- Check a few of each. Those pages are where a naive stamp goes wrong, so stamp a copy and look at them first.
- Look for sideways content too. A page whose image is sideways with no rotation applied is a different problem, covered below.
If you are stamping in a tool you have not used before, test it on a small mixed set before running the whole production.
What if the scan itself is sideways?
Sometimes the page box is portrait and has no rotation, but the scanned image inside it is turned: the scanner fed a landscape document sideways. A stamp that is correctly upright for the page will then sit at a right angle to the text, because, as far as the file is concerned, the page is portrait.
The fix is to turn the page before stamping. Rotate it in a PDF viewer or editor so the text reads correctly, save a copy, and stamp that copy. The viewer typically saves the turn as a rotation value, which is exactly the case a rotation-aware stamping tool handles. Rotating before stamping does not change the page’s content, only how it is displayed, so it is a reasonable step before production; follow any agreed production protocol on altering images.
Review the Bates ranges, then export a stamped set and index.
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How does BatesBind handle rotated and cropped pages?
BatesBind numbers a folder of PDFs and writes an index page. You choose a folder, and it lists every PDF in natural order, counts the pages and assigns one continuous Bates range across the set: a prefix you choose, zero-padded digits and a start number.
For placement, BatesBind puts each label at the bottom right of the visible page, or another corner you choose, and keeps labels upright on rotated and cropped scans. The typeface is embedded in the output, and existing page content is never moved.
You can export one bound PDF with the index in front, or a stamped copy of each file plus a separate index PDF. The index lists every file with its page count and its first and last number. Files it cannot read are listed with the reason and left out, so the numbering stays continuous for the rest.
Your files stay on your PC. BatesBind does not upload anything and has no account. The originals are never changed: it writes new files only and refuses to write where an original lives.
For the label itself, see our guide to Bates number format. If your files are locked, see Bates numbering a password-protected PDF, and if the order comes out wrong, see Bates numbers out of order.
Frequently asked questions
Which corner should a Bates number go in?
Bottom right is the common default, but follow the protocol or order in your matter. Choose a corner that does not cover content on the pages you are producing.
Does rotating a page change the evidence?
Rotating a page in a viewer usually records a display rotation rather than altering the image. If your protocol restricts any change to produced images, check before you rotate.
Why is the label fine on screen but cut off when printed?
The printer may have a non-printable margin. Move the label slightly inward or choose a different corner, and print a test page.
Can I stamp landscape and portrait pages in one run?
Yes. BatesBind numbers the whole folder in one continuous range, and each label goes in the chosen corner of each page as it is displayed.
Try BatesBind
BatesBind is a one-time purchase with a free trial in the Microsoft Store; the listing shows the current price. Run it on a copy of a mixed production with landscape and cropped pages, and check those pages first in the exported copy. More detail is on the BatesBind product page.
Number a whole folder of PDFs with one continuous range and an index.
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Last updated 23 October 2026. Published by Automata Labs, a software company in Canada.