Life & fun · February 22, 2022
Annotate PDFs in Markdown
In plain words
Annotate PDFs in Markdown is a tool for marking up PDF documents using Markdown formatting. It allows users to add notes and annotations directly to PDFs while working in Markdown syntax. The application is designed for anyone who needs to comment on or highlight content in PDF files while maintaining structured, text-based annotations. It launched in 2022.
written from the facts on this page · September 2026
More life & fun this month
the category →- TL
Life & fun · 10d ago · louisabraham.github.io
Photosynthesis fires two of your iPhone
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SoloUno▲310Take control of hair pulling, nail biting & skin picking
Life & fun · 28d ago · solouno.io
Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
Life & fun · 26d ago · everycube.alen.is
Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io
Launched alongside, February 2022
the whole month →
- S2
Life & fun · 2022 · sha256algorithm.com
- E1EdgeDB 1.0▲947
Life & fun · 2022 · edgedb.com
