ROB: Handle missing font bounding boxes gracefully #3600
Merged
+17
−4
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
LudovA
changed the title
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #3600 +/- ##
=======================================
Coverage 97.35% 97.35%
=======================================
Files 55 55
Lines 9815 9816 +1
Branches 1791 1792 +1
=======================================
+ Hits 9555 9556 +1
Misses 153 153
Partials 107 107 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
|
Some PDFs (e.g., Google Docs exports with emojis) have fonts without valid bounding boxes in their font descriptors. pypdf now gracefully uses the default bbox when /FontBBox is missing instead of crashing with KeyError: 'bbox'.
Adds test_extract_text_with_missing_font_bbox() which tests that PDFs with fonts lacking valid bounding boxes don't cause KeyError. Includes the missing_font_bbox.pdf test file from Google Docs that originally triggered the issue.
LudovA
force-pushed
the
fix-missing-font-bbox
branch
from
218bf2a to
5acf8a7
Compare
stefan6419846
requested changes
Jan 14, 2026
Collaborator
stefan6419846
left a comment
stefan6419846
left a comment
There was a problem hiding this comment.
Thanks for the PR. I have left some comments, which hopefully should be rather straightforward to solve.
stefan6419846
approved these changes
Jan 14, 2026
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes crash when extracting text from PDFs with fonts missing bounding boxes.
Problem
pypdf crashed with
KeyError: 'bbox'when encountering fonts without a/FontBBoxentry in their descriptor. This commonly occurs with PDFs exported from Google Docs containing emoji characters.Solution
Modified
_parse_font_descriptor()in_font.pyto check if the bbox key exists before accessing it.Changes
/FontBBoxgracefully in font descriptor parsingCloses #3599