This is my hack solution for converting Verilator/Spyglass logs into browseable HTML reports. It allows you to browse all your errors and warnings, and sort/filter them any way you like.
The core Javascript code used is taken from https://github.com/chestercharles/excel-bootstrap-table-filter As my knowledge on frontend web development is nonexistent and mostly based on copy/paste and stackoverflow, feel free to improve.

The dist/ files in my repo are taken from the following version:
https://raw.githubusercontent.com/chestercharles/excel-bootstrap-table-filter/4a88f70bb6857131d6b048cd4ff78da327064532/dist/excel-bootstrap-table-filter-bundle.min.js
https://raw.githubusercontent.com/chestercharles/excel-bootstrap-table-filter/4a88f70bb6857131d6b048cd4ff78da327064532/dist/excel-bootstrap-table-filter-bundle.min.js.map https://raw.githubusercontent.com/chestercharles/excel-bootstrap-table-filter/4a88f70bb6857131d6b048cd4ff78da327064532/dist/excel-bootstrap-table-filter-style.css

Due to adding support for additional log formats other than Verilator, the repo and tool name will porobably change soon.