thumbor/thumbor

4.3

Adjusted Score

4.3

Raw Score

100%

Time Factor

2026-08-07

Last Push

10.5K

Stars

Python

Language

170.9K

Lines of Code

279

Files

626

Pattern Hits

2026-08-09

Scan Date

0.01

HC Hit Rate

What These Metrics Mean

Adjusted Score: Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score: The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor: The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits: Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate: High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files: Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 3HIGH 0MEDIUM 4LOW 619

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 626 distinct pattern matches across 11 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Hyper-Verbose Identifiers543 hits · 618 pts

Severity	File	Line	Snippet	Context
LOW	integration_tests/pil_test.py	28	# def test_combined_params__with_pil(self):	COMMENT
LOW	tests/test_point.py	17	def test_default_alignment_percentages(self):	CODE
LOW	tests/test_point.py	26	def test_new_point_default_weight(self):	CODE
LOW⚡	tests/test_point.py	59	def test_new_point_square_point(self):	CODE
LOW⚡	tests/test_point.py	65	def test_aligned_point_center_middle(self):	CODE
LOW⚡	tests/test_point.py	71	def test_aligned_point_top_left(self):	CODE
LOW⚡	tests/test_point.py	77	def test_aligned_point_bottom_right(self):	CODE
LOW	tests/test_utils.py	34	def test_can_get_content_type():	CODE
LOW⚡	tests/test_utils.py	95	def test_logger_should_be_instance_of_python_logger():	CODE
LOW⚡	tests/test_utils.py	99	def test_logger_should_not_be_null():	CODE
LOW⚡	tests/test_utils.py	103	def test_logger_should_not_be_an_error():	CODE
LOW⚡	tests/test_utils.py	107	def test_get_color_space_handles_invalid_icc():	CODE
LOW⚡	tests/test_utils.py	115	def test_get_color_space_handles_null_xcolor_space(image_cms_profile_mock):	CODE
LOW⚡	tests/test_utils.py	123	def test_get_color_space_missing_imagecms_returns_none():	CODE
LOW⚡	tests/test_utils.py	129	def test_ensure_srgb_handles_invalid_icc():	CODE
LOW⚡	tests/test_utils.py	136	def test_ensure_srgb_missing_imagecms_runtimeerror():	CODE
LOW⚡	tests/test_utils.py	143	def test_ensure_srgb_keeps_existing_srgb_profile():	CODE
LOW⚡	tests/test_utils.py	152	def test_ensure_srgb_returns_none_for_unsupported_color_space(color_space):	CODE
LOW⚡	tests/test_utils.py	160	def test_ensure_srgb_returns_none_for_animated_cmyk():	CODE
LOW	tests/test_console.py	18	def test_can_get_default_server_parameters(self):	CODE
LOW	tests/test_console.py	29	def test_can_get_custom_server_parameters(self):	CODE
LOW	tests/test_url_composer.py	47	def test_fails_when_no_config_or_key(self, load_mock, mock_stdout):	CODE
LOW	tests/test_url_composer.py	76	def test_get_thumbor_params_with_crop(self):	CODE
LOW	tests/test_url_composer.py	96	def test_get_thumbor_params_full_adaptive_fitin_false(self):	CODE
LOW	tests/test_url_composer.py	118	def test_get_thumbor_params_full_adaptive_fitin(self):	CODE
LOW	tests/test_url_composer.py	137	def test_get_thumbor_params_adaptive_fitin(self):	CODE
LOW	tests/test_url_composer.py	156	def test_get_thumbor_params_full_fitin(self):	CODE
LOW	tests/test_url_composer.py	175	def test_get_thumbor_params_fitin(self):	CODE
LOW	tests/test_url_composer.py	214	def test_get_options_from_sys(self):	CODE
LOW	tests/test_url_composer.py	235	def test_get_options_fails_when_no_url(self):	CODE
LOW	tests/test_signal_handler.py	18	def test_setup_signal_handler_sets_handler(self, signal_mock):	CODE
LOW	tests/test_signal_handler.py	31	def test_signal_handler_calls_add_callback_from_signal(self, ioloop_mock):	CODE
LOW	tests/test_doctor.py	26	def test_get_doctor_output_no_config(capsys, doctor_output_no_config):	CODE
LOW	tests/test_importer.py	40	def test_import_item_should_be_proper_item(self):	CODE
LOW	tests/test_importer.py	69	def test_single_item_should_equal_file_storage():	CODE
LOW	tests/test_importer.py	79	def test_multiple_items_can_be_imported():	CODE
LOW	tests/test_threadpool.py	22	async def test_can_get_threadpool_instance():	CODE
LOW	tests/test_threadpool.py	37	async def test_can_run_task_in_foreground():	CODE
LOW	tests/test_threadpool.py	49	async def test_can_run_task_in_foreground_and_exception_happens():	CODE
LOW	tests/test_threadpool.py	62	async def test_queueing_task_when_no_pool_runs_sync():	CODE
LOW	tests/test_threadpool.py	74	async def test_queueing_task_when_no_pool_runs_sync_and_exception_happens():	CODE
LOW	tests/test_threadpool.py	100	async def test_can_run_async_with_queue():	CODE
LOW⚡	tests/test_server.py	33	def test_can_get_value_as_integer(self):	CODE
LOW⚡	tests/test_server.py	39	def test_can_get_config_from_path(self):	CODE
LOW⚡	tests/test_server.py	47	def test_can_get_config_with_env_enabled(self):	CODE
LOW	tests/test_server.py	58	def test_can_configure_log_from_config(self, basic_config_mock):	CODE
LOW⚡	tests/test_server.py	71	def test_can_configure_log_from_dict_config(self, dict_config_mock):	CODE
LOW⚡	tests/test_server.py	81	def test_can_import_default_modules(self):	CODE
LOW⚡	tests/test_server.py	88	def test_can_import_with_custom_error_handler_class(self):	CODE
LOW	tests/test_server.py	101	def test_validate_config_security_key(self):	CODE
LOW	tests/test_server.py	112	def test_validate_config_security_key_from_config(self):	CODE
LOW	tests/test_server.py	120	def test_validate_config_warns_about_legacy_allowed_sources(	CODE
LOW	tests/test_server.py	134	def test_validate_gifsicle_path(self, which_mock):	CODE
LOW	tests/test_server.py	144	def test_validate_null_gifsicle_path(self, which_mock):	CODE
LOW	tests/test_server.py	180	def test_can_run_server_with_default_params(self, server_mock):	CODE
LOW	tests/test_server.py	196	def test_can_run_server_with_multiple_processes(self, server_mock):	CODE
LOW	tests/test_server.py	212	def test_can_run_server_with_fd(self, socket_mock, server_mock):	CODE
LOW	tests/test_server.py	229	def test_can_run_server_with_fd_non_blocking(	CODE
LOW	tests/test_server.py	253	def test_can_run_server_with_unix_socket(	CODE
LOW	tests/test_server.py	274	def test_run_server_returns_server(self, server_mock):	CODE
483 more matches not shown…

Hallucination Indicators3 hits · 30 pts

Severity	File	Line	Snippet	Context
CRITICAL	thumbor/transformer.py	171	self.context.modules.importer.error_handler.handle_error(	CODE
CRITICAL	thumbor/handlers/__init__.py	684	self.context.modules.importer.error_handler.handle_error(	CODE
CRITICAL	thumbor/handlers/__init__.py	1060	self.context.modules.importer.error_handler.handle_error(	CODE

Excessive Try-Catch Wrapping20 hits · 20 pts

Severity	File	Line	Snippet	Context
LOW	integration_tests/urls_helpers.py	147	except Exception as err: # pylint: disable=broad-except	CODE
LOW	tests/filters/test_convolution.py	66	except Exception as exc: # pylint: disable=broad-except	CODE
LOW	thumbor/url_composer.py	232	except Exception: # pylint: disable=broad-except	CODE
LOW	thumbor/utils.py	34	except Exception:	CODE
MEDIUM	thumbor/utils.py	31	def _get_flag(flags, name):	CODE
LOW	thumbor/transformer.py	165	except Exception: # pylint: disable=broad-except	CODE
LOW	thumbor/filters/watermark.py	213	except Exception as error:	CODE
LOW	thumbor/filters/__init__.py	233	except Exception:	CODE
LOW	thumbor/engines/gif.py	157	except Exception:	CODE
LOW	thumbor/engines/__init__.py	203	except Exception as error: # pylint: disable=broad-except	STRING
LOW	thumbor/engines/__init__.py	275	except Exception as error:	STRING
LOW	thumbor/engines/__init__.py	332	except Exception as error:	STRING
LOW	thumbor/engines/pil.py	144	except Exception:	CODE
MEDIUM	thumbor/engines/pil.py	103	def create_image(self, buffer):	CODE
LOW	thumbor/detectors/feature_detector/__init__.py	33	except Exception as error:	CODE
LOW	thumbor/handlers/__init__.py	146	except Exception as error:	CODE
LOW	thumbor/handlers/__init__.py	253	except Exception as error:	CODE
LOW	thumbor/handlers/__init__.py	283	except Exception as error:	CODE
LOW	thumbor/handlers/__init__.py	679	except Exception as error: # pylint: disable=broad-except	CODE
LOW	thumbor/handlers/__init__.py	999	except Exception as error:	CODE

Redundant / Tautological Comments9 hits · 16 pts

Severity	File	Line	Snippet	Context
LOW	thumbor/handlers/image_resource.py	22	# Check if image exists	COMMENT
LOW⚡	thumbor/handlers/image_resource.py	50	# Check if image overwriting is allowed	COMMENT
LOW⚡	thumbor/handlers/image_resource.py	55	# Check if the image uploaded is valid	COMMENT
LOW⚡	thumbor/handlers/image_resource.py	62	# Check if image deleting is allowed	COMMENT
LOW⚡	thumbor/handlers/image_resource.py	67	# Check if image exists	COMMENT
LOW	thumbor/handlers/upload.py	25	# Check if the image uploaded is a multipart/form-data	COMMENT
LOW	thumbor/handlers/upload.py	38	# Check if the image uploaded is valid	COMMENT
LOW	thumbor/handlers/__init__.py	1081	# Check if image is valid	COMMENT
LOW	thumbor/handlers/imaging.py	34	# Check if an image with an uuid exists in storage	COMMENT

Over-Commented Block14 hits · 14 pts

Severity	File	Line	Snippet	Context
LOW	docs/conf.py	1	# -- coding: utf-8 --	COMMENT
LOW	docs/conf.py	61		COMMENT
LOW	docs/conf.py	81	# non-false value, then it is used:	COMMENT
LOW	docs/conf.py	101	# If true, sectionauthor and moduleauthor directives will be shown in the	COMMENT
LOW	docs/conf.py	121		COMMENT
LOW	docs/conf.py	141	# The name of an image file (within the static path) to use as favicon of the	COMMENT
LOW	docs/conf.py	161	# typographically correct entities.	COMMENT
LOW	docs/conf.py	181	# html_show_sourcelink = True	COMMENT
LOW	docs/conf.py	221	"manual",	COMMENT
LOW	docs/conf.py	281	# How to display URL addresses: 'footnote', 'no', or 'inline'.	COMMENT
LOW	thumbor/url.py	1	# -- coding: utf-8 --	COMMENT
LOW	thumbor/lib/__init__.py	1	# -- coding: utf-8 --	COMMENT
LOW	.github/workflows/codeql-analysis.yml	1	# For most projects, this workflow file will not need changing; you simply need	COMMENT
LOW	.github/workflows/codeql-analysis.yml	41	uses: actions/checkout@v7	COMMENT

Deep Nesting14 hits · 14 pts

Severity	File	Line	Context
LOW	thumbor/importer.py	148	CODE
LOW	thumbor/url_composer.py	169	CODE
LOW	thumbor/transformer.py	114	CODE
LOW	thumbor/filters/watermark.py	57	CODE
LOW	thumbor/filters/redeye.py	35	CODE
LOW	thumbor/engines/__init__.py	107	CODE
LOW	thumbor/engines/__init__.py	292	CODE
LOW	thumbor/engines/pil.py	245	CODE
LOW	thumbor/loaders/http_loader.py	82	CODE
LOW	thumbor/loaders/http_loader.py	137	CODE
LOW	thumbor/handlers/__init__.py	307	CODE
LOW	thumbor/handlers/__init__.py	496	CODE
LOW	thumbor/handlers/__init__.py	573	CODE
LOW	thumbor/handlers/__init__.py	614	CODE

Unused Imports8 hits · 8 pts

Severity	File	Line	Context
LOW	tests/conftest.py	7	CODE
LOW	thumbor/url.py	10	CODE
LOW	thumbor/doctor.py	184	CODE
LOW	thumbor/doctor.py	185	CODE
LOW	thumbor/compatibility/__init__.py	10	CODE
LOW	thumbor/url_signers/__init__.py	14	CODE
LOW	thumbor/detectors/__init__.py	13	CODE
LOW	thumbor/detectors/__init__.py	14	CODE

AI Structural Patterns8 hits · 8 pts

Severity	File	Line	Context
LOW	tests/loaders/test_file_loader_http_fallback.py	34	CODE
LOW	tests/loaders/test_file_loader_http_fallback.py	45	CODE
LOW	thumbor/context.py	228	CODE
LOW	thumbor/storages/mixed_storage.py	77	CODE
LOW	thumbor/storages/mixed_storage.py	82	CODE
LOW	thumbor/storages/mixed_storage.py	87	CODE
LOW	thumbor/storages/mixed_storage.py	92	CODE
LOW	thumbor/result_storages/file_storage.py	109	CODE

Self-Referential Comments2 hits · 6 pts

Severity	File	Line	Snippet	Context
MEDIUM	tests/compatibility/legacy_file_result_storage.py	10	# This file is copied from legacy way of using thumbor result storages,	COMMENT
MEDIUM	docs/conf.py	6	# This file is execfile()d with the current directory set to its	COMMENT

Slop Phrases4 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	tests/conftest.py	172	Don't forget to copy this log and add it to the description.	CODE
LOW	thumbor/doctor.py	466	print_info("Don't forget to copy this log and add it to the description.")	STRING
LOW	.github/ISSUE_TEMPLATE/bug_report.yml	12	⚠️ Don't forget to replace your `SECURITY_KEY` in the config with a	CODE
LOW	.github/ISSUE_TEMPLATE/bug_report.yml	61	Paste your `thumbor.conf` contents here. **Make sure to replace your	CODE

AI Slop Vocabulary1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	thumbor/engines/pil.py	296	# Can't simply set options['progressive'] to the value	COMMENT

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings