Show HN: Why is my PDF so big? – See every byte of a PDF as a treemap

Category: devtools

Tags: pdf, visualization, treemap, browser-based, file-analysis

Score: 6.0/10 (Innovation: 6, Technical: 6, Documentation: 8, Utility: 6)

A browser-based tool that analyzes PDF files and visualizes their internal structure as an interactive treemap, revealing what consumes space (images, fonts, metadata, etc.). It also compares two versions to show what changed after optimization. The project is interesting for its practical utility and privacy-focused client-side analysis.

Target audience: developers, designers, devops, anyone working with PDFs

Repository: https://www.whyismypdfsobig.com/

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