diff --git a/perun/cli_groups/__init__.py b/perun/cli_groups/__init__.py
index b127cd76..828a2f35 100644
--- a/perun/cli_groups/__init__.py
+++ b/perun/cli_groups/__init__.py
@@ -1 +1,5 @@
 """Collection of CLI groups that are not part of the standalone commands"""
+
+import lazy_loader as lazy
+
+__getattr__, __dir__, __all__ = lazy.attach_stub(__name__, __file__)
diff --git a/perun/cli_groups/__init__.pyi b/perun/cli_groups/__init__.pyi
new file mode 100644
index 00000000..0651caf0
--- /dev/null
+++ b/perun/cli_groups/__init__.pyi
@@ -0,0 +1,59 @@
+from . import check_cli as check_cli
+from . import collect_cli as collect_cli
+from . import config_cli as config_cli
+from . import import_cli as import_cli
+from . import run_cli as run_cli
+from . import shared_options as shared_options
+from . import showdiff_cli as showdiff_cli
+from . import utils_cli as utils_cli
+
+from .check_cli import (
+    check_group as check_group,
+    check_head as check_head,
+    check_all as check_all,
+    check_profiles as check_profiles,
+)
+
+from .collect_cli import collect as collect
+
+from .config_cli import (
+    config as config,
+    config_get as config_get,
+    config_set as config_set,
+    config_edit as config_edit,
+    config_reset as config_reset,
+)
+
+from .import_cli import (
+    import_group as import_group,
+    perf_group as perf_group,
+    from_binary as from_binary,
+    from_text as from_text,
+    from_stacks as from_stacks,
+    elk_group as elk_group,
+    from_json as from_json,
+)
+
+from .run_cli import (
+    run as run,
+    matrix as matrix,
+    job as job,
+)
+
+from .shared_options import (
+    flamegraph_cli_options as flamegraph_cli_options,
+    profile_postprocess_cli_options as profile_postprocess_cli_options,
+    profile_aggregation_cli_option as profile_aggregation_cli_options,
+)
+
+from .showdiff_cli import (
+    perun_profile_list_options as perun_profile_list_options,
+    common_html_options as common_html_options,
+    flamegraph_diff_cli_options as flamegraph_diff_cli_options,
+    showdiff_group as showdiff_group,
+    short_diff as short_diff,
+    flamegraph_diff as flamegraph_diff,
+    report_group as report_group,
+    report_native as report_native,
+    report_folded as report_folded,
+)
diff --git a/perun/cli_groups/import_cli.py b/perun/cli_groups/import_cli.py
index c2d4c7f9..21c7f158 100755
--- a/perun/cli_groups/import_cli.py
+++ b/perun/cli_groups/import_cli.py
@@ -10,8 +10,7 @@
 
 # Perun Imports
 from perun.logic import commands, config
-from perun.profiles import native as profile
-from perun.profiles.conversions import perf_native, elk_native
+from perun.profiles import native as profile, conversions
 from perun.utils.common import cli_kit
 
 
@@ -187,7 +186,7 @@ def from_binary(ctx: click.Context, import_entries: list[str], **kwargs: Any) ->
     that combines the --stats-headers option and profile entries.
     """
     kwargs.update(ctx.obj)
-    perf_native.import_perf_from_record(import_entries, **kwargs)
+    conversions.perf_native.import_perf_from_record(import_entries, **kwargs)
 
 
 @perf_group.command("script")
@@ -214,7 +213,7 @@ def from_text(ctx: click.Context, import_entries: list[str], **kwargs: Any) -> N
     that combines the --stats-headers option and profile entries.
     """
     kwargs.update(ctx.obj)
-    perf_native.import_perf_from_script(import_entries, **kwargs)
+    conversions.perf_native.import_perf_from_script(import_entries, **kwargs)
 
 
 @perf_group.command("stack")
@@ -242,7 +241,7 @@ def from_stacks(ctx: click.Context, import_entries: list[str], **kwargs: Any) ->
     that combines the --stats-headers option and profile entries.
     """
     kwargs.update(ctx.obj)
-    perf_native.import_perf_from_stack(import_entries, **kwargs)
+    conversions.perf_native.import_perf_from_stack(import_entries, **kwargs)
 
 
 @import_group.group("elk")
@@ -272,4 +271,4 @@ def from_json(ctx: click.Context, import_entries: list[str], **kwargs: Any) -> N
     Each import entry may specify a JSON path 'file_path.json'.
     """
     kwargs.update(ctx.obj)
-    elk_native.import_elk_from_json(import_entries, **kwargs)
+    conversions.elk_native.import_elk_from_json(import_entries, **kwargs)
diff --git a/perun/cli_groups/meson.build b/perun/cli_groups/meson.build
index de396c8e..2590a7e2 100644
--- a/perun/cli_groups/meson.build
+++ b/perun/cli_groups/meson.build
@@ -2,6 +2,7 @@ perun_cli_groups_dir = perun_dir / 'cli_groups'
 
 perun_cli_groups_files = files(
     '__init__.py',
+    '__init__.pyi',
     'check_cli.py',
     'collect_cli.py',
     'config_cli.py',
diff --git a/perun/cli_groups/showdiff_cli.py b/perun/cli_groups/showdiff_cli.py
index c771dcfe..14d52bc4 100644
--- a/perun/cli_groups/showdiff_cli.py
+++ b/perun/cli_groups/showdiff_cli.py
@@ -21,8 +21,8 @@
     DEFAULT_TRACE_THRESHOLD,
     HeaderDisplayStyle,
 )
-from perun.view_diff import flamegraph, short
-from perun.view_diff.report import native, folded
+from perun import view_diff
+from perun.view_diff import report
 
 if TYPE_CHECKING:
     from perun.profiles.native import Profile
@@ -178,7 +178,7 @@ def short_diff(profile_list: tuple[Profile, Profile], *_: Any, **kwargs: Any) ->
 
     Supports only perun-native profiles.
     """
-    short.compare_profiles(*profile_list, **kwargs)
+    view_diff.short.compare_profiles(*profile_list, **kwargs)
 
 
 @showdiff_group.command("flamegraph")
@@ -221,7 +221,7 @@ def flamegraph_diff(profile_list: tuple[Profile, Profile], *_: Any, **kwargs: An
 
     Supports only perun-native profiles.
     """
-    flamegraph.generate_flamegraph_difference(*profile_list, **kwargs)
+    view_diff.flamegraph.generate_flamegraph_difference(*profile_list, **kwargs)
 
 
 @showdiff_group.group("report")
@@ -327,7 +327,7 @@ def report_native(
         perun showdiff report native -m HEAD~1 0@i 1@i
     """
     kwargs.update(ctx.obj)
-    native.generate_report_from_native_profiles(*profile_list, **kwargs)
+    report.native.generate_report_from_native_profiles(*profile_list, **kwargs)
 
 
 @report_group.command("folded")
@@ -507,4 +507,4 @@ def report_folded(ctx: click.Context, baseline: str, target: str, **kwargs: Any)
 
     """
     kwargs.update(ctx.obj)
-    folded.generate_report_from_folded_profiles(baseline, target, **kwargs)
+    report.folded.generate_report_from_folded_profiles(baseline, target, **kwargs)
diff --git a/perun/fuzz/__init__.pyi b/perun/fuzz/__init__.pyi
index 1d99baf3..4f639b81 100644
--- a/perun/fuzz/__init__.pyi
+++ b/perun/fuzz/__init__.pyi
@@ -1 +1,7 @@
+from . import filesystem as filesystem
+from . import filetype as filetype
+from . import helpers as helpers
+from . import interpret as interpret
+from . import randomizer as randomizer
+
 from .factory import run_fuzzing_for_command as run_fuzzing_for_command
diff --git a/perun/profiles/conversions/__init__.pyi b/perun/profiles/conversions/__init__.pyi
index b5a9ed45..22d17b98 100644
--- a/perun/profiles/conversions/__init__.pyi
+++ b/perun/profiles/conversions/__init__.pyi
@@ -1,3 +1,13 @@
+from . import (
+    elk_native as elk_native,
+    folded_polars as folded_polars,
+    native_folded as native_folded,
+    native_pandas as native_pandas,
+    native_polars as native_polars,
+    perf_native as perf_native,
+    polars_folded as polars_folded,
+)
+
 from .elk_native import import_elk_from_json as import_elk_from_json
 
 from .folded_polars import (
diff --git a/perun/profiles/folded/__init__.pyi b/perun/profiles/folded/__init__.pyi
index a49f6062..06e0d87f 100644
--- a/perun/profiles/folded/__init__.pyi
+++ b/perun/profiles/folded/__init__.pyi
@@ -1,3 +1,6 @@
+from . import parser as parser
+from . import postprocess as postprocess
+
 from .parser import (
     parse_resources_from_stream as parse_resources_from_stream,
     parse_events_from_stream as parse_events_from_stream,
diff --git a/perun/profiles/native/__init__.pyi b/perun/profiles/native/__init__.pyi
index 2eedf077..406d56b4 100644
--- a/perun/profiles/native/__init__.pyi
+++ b/perun/profiles/native/__init__.pyi
@@ -1,3 +1,7 @@
+from . import factory as factory
+from . import helpers as helpers
+from . import query as query
+
 from .factory import (
     Profile as Profile,
     pass_profile as pass_profile,
diff --git a/perun/profiles/polars/__init__.pyi b/perun/profiles/polars/__init__.pyi
index ca7897d0..bd20779a 100644
--- a/perun/profiles/polars/__init__.pyi
+++ b/perun/profiles/polars/__init__.pyi
@@ -1,3 +1,7 @@
+from . import convert as convert
+from . import parser as parser
+from . import structs as structs
+
 from .convert import (
     create_polars_pair_profile as create_polars_pair_profile,
     merge_and_filter_polars_profiles as merge_and_filter_polars_profiles,
diff --git a/perun/utils/log.py b/perun/utils/log.py
index 1b4fe21c..5cb7b2c6 100644
--- a/perun/utils/log.py
+++ b/perun/utils/log.py
@@ -17,8 +17,6 @@
 import traceback
 
 # Third-Party Imports
-import numpy as np
-import progressbar
 import termcolor
 
 # Perun Imports
@@ -713,6 +711,8 @@ def aggregate_intervals(
     :return: list of the aggregated partial intervals to print
     """
     # Fixme: This is baaaad. But the partial intervals are somewhat broken (sometimes list, sometimes narray)
+    import numpy as np
+
     intervals = np.array(input_intervals) if isinstance(input_intervals, list) else input_intervals
 
     def get_indices_of_intervals() -> Iterable[tuple[int, int]]:
@@ -867,6 +867,8 @@ def progress(collection: Iterable[T], description: str = "") -> Iterable[T]:
     :param collection: any iterable
     :param description: tag on the left side of the output of the bar
     """
+    import progressbar
+
     widgets: list[progressbar.widgets.WidgetBase | str] = [
         (description + ": ") if description else "",
         progressbar.Percentage(),
diff --git a/perun/view/flamegraph/__init__.pyi b/perun/view/flamegraph/__init__.pyi
index 69c85664..92898206 100644
--- a/perun/view/flamegraph/__init__.pyi
+++ b/perun/view/flamegraph/__init__.pyi
@@ -1,3 +1,7 @@
+from . import core as core
+from . import grid as grid
+from . import run as run
+
 from .core import (
     generate_flamegraph as generate_flamegraph,
     generate_title as generate_title,
diff --git a/perun/view/flamegraph/grid.py b/perun/view/flamegraph/grid.py
index e51215cb..11b38bf9 100644
--- a/perun/view/flamegraph/grid.py
+++ b/perun/view/flamegraph/grid.py
@@ -25,6 +25,62 @@
     from types import TracebackType
 
 
+# SVG-escaping patterns.
+# Function patterns.
+_FUNC_PATTERN = re.compile(
+    r"(?<!\w)"
+    r"(apply_hover_highlight|clear_hover_highlights|clearzoom"
+    r"|find_child|find_frames|find_group"
+    r"|get_params|g_to_func|g_to_text"
+    r"|init|is_event_still_in_group|is_hover_highlighted"
+    r"|orig_load|orig_save|parse_params"
+    r"|removeExclusiveView|reset_search_hover|reset_search"
+    r"|restore_frame_after_hover"
+    r"|searchout|searchover|search_hover_show_stats|search_hover"
+    r"|search_prompt|search"
+    r"|toggleExclusive|unzoom|updateExclusiveView|update_text"
+    r"|zoom_child|zoom_parent|zoom_reset|zoom"
+    r"|c|s)\("
+)
+
+# Literal patterns.
+_LITERAL_KEYS = [
+    '"search"',
+    "#search",
+    '"background"',
+    "#background",
+    '"frames"',
+    "#frames",
+    "#excToggle",
+    '"excToggle"',
+    "#unzoom",
+    '"unzoom"',
+    '"matched"',
+    '"matchedhover"',
+    "details",
+    "nameTypeLabel",
+    "inclusiveLabel",
+    "exclusiveLabel",
+    "searchbtn",
+    "unzoombtn",
+    "currentSearchTerm",
+    "hoverSearchTerm",
+    "ignorecase",
+    "searching",
+    "exclusiveMode",
+    "isDiff",
+]
+_LITERAL_PATTERN = re.compile(
+    "|".join(re.escape(k) for k in sorted(_LITERAL_KEYS, key=len, reverse=True))
+)
+
+# Misc patterns.
+_SVG_VAR_PATTERN = re.compile(r"svg(\.| =|,)")
+_WS_PATTERN = re.compile(r">\s*\n<")
+_GET_ELEMENTS_PATTERN = re.compile(r'getElementsByTagName\("svg"\)\[0\]')
+_SVG_TAG_PATTERN = re.compile(r'<svg version="1.1" width="[0-9]+" height="[0-9]+"')
+
+
 @dataclasses.dataclass
 class FlameGraphGrid:
     """A collection of flamegraphs that form a 2x2 grid of baseline, target and their diffs.
@@ -460,96 +516,46 @@ def escape_flamegraph_svg(tag: str, content: str, _tag_to_index: dict[str, int]
     :return: the escaped content
     """
     tag_index = _tag_to_index.setdefault(tag, len(_tag_to_index))
-    functions = [
-        r"(?<!\w)(c)\(",
-        r"(?<!\w)(get_params)\(",
-        r"(?<!\w)(parse_params)\(",
-        r"(?<!\w)(find_child)\(",
-        r"(?<!\w)(find_group)\(",
-        r"(?<!\w)(g_to_func)\(",
-        r"(?<!\w)(g_to_text)\(",
-        r"(?<!\w)(init)\(",
-        r"(?<!\w)(orig_load)\(",
-        r"(?<!\w)(orig_save)\(",
-        r"(?<!\w)(reset_search)\(",
-        r"(?<!\w)(reset_search_hover)\(",
-        r"(?<!\w)(s)\(",
-        r"(?<!\w)(search)\(",
-        r"(?<!\w)(search_hover)\(",
-        r"(?<!\w)(search_prompt)\(",
-        r"(?<!\w)(find_frames)\(",
-        r"(?<!\w)(searchout)\(",
-        r"(?<!\w)(searchover)\(",
-        r"(?<!\w)(clearzoom)\(",
-        r"(?<!\w)(unzoom)\(",
-        r"(?<!\w)(update_text)\(",
-        r"(?<!\w)(zoom)\(",
-        r"(?<!\w)(zoom_child)\(",
-        r"(?<!\w)(zoom_parent)\(",
-        r"(?<!\w)(zoom_reset)\(",
-        r"(?<!\w)(toggleExclusive)\(",
-        r"(?<!\w)(removeExclusiveView)\(",
-        r"(?<!\w)(updateExclusiveView)\(",
-        r"(?<!\w)(is_event_still_in_group)\(",
-        r"(?<!\w)(is_hover_highlighted)\(",
-        r"(?<!\w)(restore_frame_after_hover)\(",
-        r"(?<!\w)(clear_hover_highlights)\(",
-        r"(?<!\w)(apply_hover_highlight)\(",
-        r"(?<!\w)(search_hover_show_stats)\(",
-    ]
-    other = [
-        (r"\"search\"", f'"{tag}_search"'),
-        (r"#search", f"#{tag}_search"),
-        (r"\"background\"", f'"{tag}_background"'),
-        (r"#background", f"#{tag}_background"),
-        (r"\"frames\"", f'"{tag}_frames"'),
-        (r"#frames", f"#{tag}_frames"),
-        (r"#excToggle", f"#{tag}_excToggle"),
-        (r"\"excToggle\"", f'"{tag}_excToggle"'),
-        (r"#unzoom", f"#{tag}_unzoom"),
-        (r"\"unzoom\"", f'"{tag}_unzoom"'),
-        (r"\"matched\"", f'"{tag}_matched"'),
-        (r"\"matchedhover\"", f'"{tag}_matchedhover"'),
-        (r"details", f"{tag}_details"),
-        (r"nameTypeLabel", f"{tag}_nameTypeLabel"),
-        (r"inclusiveLabel", f"{tag}_inclusiveLabel"),
-        (r"exclusiveLabel", f"{tag}_exclusiveLabel"),
-        (r"matched", f"{tag}_matched"),
-        (r"searchbtn", f"{tag}_searchbtn"),
-        (r"unzoombtn", f"{tag}_unzoombtn"),
-        (r"currentSearchTerm", f"{tag}_currentSearchTerm"),
-        (r"hoverSearchTerm", f"{tag}_hoverSearchTerm"),
-        (r"ignorecase", f"{tag}_ignorecase"),
-        (r"ignorecaseBtn", f"{tag}_ignorecaseBtn"),
-        (r"searching", f"{tag}_searching"),
-        (r"matchedtxt", f"{tag}_matchedtxt"),
-        (r"matchedHoverTxt", f"{tag}_matchedHoverTxt"),
-        (r"exclusiveMode", f"{tag}_exclusiveMode"),
-        (r"isDiff", f"{tag}_isDiff"),
-        (r"svg\.", f"{tag}_svg."),
-        (r"svg =", f"{tag}_svg ="),
-        (r"svg,", f"{tag}_svg,"),
-        (r">\s*\n<", r"><"),
-        (
-            r"getElementsByTagName\(\"svg\"\)\[0\]",
-            f'getElementsByClassName("svg-content")[{tag_index}]',
-        ),
-        (r"document.", f"{tag}_svg."),
-        (f"{tag}_svg.createElementNS", "document.createElementNS"),
-        (
-            f"({tag}_(svg|details|detailsName|detailsIncl|detailsExcl|matchedHoverCount|matchedHoverIncl|matchedHoverExcl|matchedSearchCount|matchedSearchIncl|matchedSearchExcl|nameTypeLabel|inclusiveLabel|exclusiveLabel|matchedHoverLabel|matchedSearchLabel|searchbtn|matchedtxt|matchedHoverTxt|ignorecaseBtn|unzoombtn)) = {tag}_svg.",
-            "\\1 = document.",
-        ),
-        # Huge thanks to following article:
-        # https://chartio.com/resources/tutorials/how-to-resize-an-svg-when-the-window-is-resized-in-d3-js/
-        # Which helped to solve the issue with non-resizable flamegraphs
-        (
-            '<svg version="1.1" width="[0-9]+" height="[0-9]+"',
-            '<svg version="1.1" preserveAspectRatio="xMinYMin meet" class="svg-content"',
-        ),
-    ]
-    for func in functions:
-        content = re.sub(func, f"{tag}_\\1(", content)
-    for unit, sub in other:
-        content = re.sub(unit, sub, content)
+
+    content = _FUNC_PATTERN.sub(rf"{tag}_\1(", content)
+
+    def _literal_repl(m: re.Match[str]) -> str:
+        s = m.group(0)
+        if s[0] == '"':
+            return f'"{tag}_' + s[1:]
+        if s[0] == "#":
+            return f"#{tag}_" + s[1:]
+        return f"{tag}_" + s
+
+    content = _LITERAL_PATTERN.sub(_literal_repl, content)
+
+    content = re.sub(r"matched", f"{tag}_matched", content)
+
+    content = _SVG_VAR_PATTERN.sub(rf"{tag}_svg\1", content)
+    content = _WS_PATTERN.sub("><", content)
+    content = _GET_ELEMENTS_PATTERN.sub(
+        f'getElementsByClassName("svg-content")[{tag_index}]', content
+    )
+
+    # Replace 'document.' references, then revert specific cases.
+    content = re.sub(r"document.", f"{tag}_svg.", content)
+    content = content.replace(f"{tag}_svg.createElementNS", "document.createElementNS")
+    content = re.sub(
+        f"({tag}_(svg|details|detailsName|detailsIncl|detailsExcl"
+        f"|matchedHoverCount|matchedHoverIncl|matchedHoverExcl"
+        f"|matchedSearchCount|matchedSearchIncl|matchedSearchExcl"
+        f"|nameTypeLabel|inclusiveLabel|exclusiveLabel"
+        f"|matchedHoverLabel|matchedSearchLabel"
+        f"|searchbtn|matchedtxt|matchedHoverTxt"
+        f"|ignorecaseBtn|unzoombtn)) = {tag}_svg.",
+        r"\1 = document.",
+        content,
+    )
+    # Huge thanks to following article:
+    # https://chartio.com/resources/tutorials/how-to-resize-an-svg-when-the-window-is-resized-in-d3-js/
+    # Which helped to solve the issue with non-resizable flamegraphs
+    content = _SVG_TAG_PATTERN.sub(
+        '<svg version="1.1" preserveAspectRatio="xMinYMin meet" class="svg-content"',
+        content,
+    )
     return content
diff --git a/perun/view_diff/__init__.pyi b/perun/view_diff/__init__.pyi
index cbdedc16..019fc728 100644
--- a/perun/view_diff/__init__.pyi
+++ b/perun/view_diff/__init__.pyi
@@ -1,4 +1,6 @@
 from . import report as report
+from . import short as short
+from . import flamegraph as flamegraph
 
 from .chatbot import generate_initial_prompt as generate_initial_prompt
 
diff --git a/perun/view_diff/report/__init__.pyi b/perun/view_diff/report/__init__.pyi
index 26246b8e..1c1e4a08 100644
--- a/perun/view_diff/report/__init__.pyi
+++ b/perun/view_diff/report/__init__.pyi
@@ -1,3 +1,6 @@
+from . import folded as folded
+from . import native as native
+
 from .core import (
     ProfileMisc as ProfileMisc,
     SelectionRow as SelectionRow,