---
title: "LiteParse is really neat! It does a great job of extracting text from annoying layouts in PDFs (mult..."
source_name: "Simon Willison(@simonw)"
original_url: "https://x.com/simonw/status/2047434783962354130"
canonical_url: "https://www.traeai.com/articles/ff9c3879-564a-4d3d-a915-8c10fbd3c47a"
content_type: "tweet"
language: "中文"
score: 5
tags: []
published_at: "2026-04-23T21:57:46+00:00"
created_at: "2026-04-24T01:33:26.016098+00:00"
---

# LiteParse is really neat! It does a great job of extracting text from annoying layouts in PDFs (mult...

Canonical URL: https://www.traeai.com/articles/ff9c3879-564a-4d3d-a915-8c10fbd3c47a
Original source: https://x.com/simonw/status/2047434783962354130

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Title: Simon Willison on X: "LiteParse is really neat! It does a great job of extracting text from annoying layouts in PDFs (multiple columns for example)

It's only available as a Node.js CLI app, so I vibe-coded up this version that runs in a browser https://t.co/xdawwDV7Kq" / X

URL Source: http://x.com/simonw/status/2047434783962354130

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LiteParse is really neat! It does a great job of extracting text from annoying layouts in PDFs (multiple columns for example) It's only available as a Node.js CLI app, so I vibe-coded up this version that runs in a browser

[![Image 1: Screenshot of the LiteParse browser demo web page. Header reads "LiteParse" with subtitle "Browser demo of LiteParse — parse PDFs in your browser. Nothing leaves your machine." A dashed-border drop zone says "Drop a PDF here or click to choose / Your file stays in your browser." with a file pill labeled "19720005243.pdf". Below are a checked "Run OCR" checkbox, an unchecked "Render page screenshots" checkbox, and a blue "Parse" button. Status text: "Parsed 86 pages." Two side-by-side panels follow. Left panel titled "Text" with a Copy button shows monospace extracted text beginning "Apollo 5 was an unmanned system, both propulsion systems ascent and descent stages". Right panel titled "JSON", also with a copy button, contains JSON showing the dimensions and position and detected font of each piece of text.](https://pbs.twimg.com/media/HGnzE6HbIAA1mA8?format=jpg&name=small)](https://x.com/simonw/status/2047434783962354130/photo/1)

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Quote

Jerry Liu

@jerryjliu0

Apr 22

LiteParse, our OSS document parser, is really good at parsing complex PDF layouts, text, and tables into a clean spatial grid. The best part is it doesn't use VLMs or any ML models at all. It's entirely heuristics based and super fast ![Image 2: ⚡️](https://abs.twimg.com/emoji/v2/svg/26a1.svg) The secret lies in our sophisticated  x.com/llama_index/st…

[![Image 3: Image](https://pbs.twimg.com/media/HGiM2qQa0AA57Ww?format=jpg&name=small)](https://x.com/jerryjliu0/status/2047041129326194882/photo/1)