LiteParse, our OSS document parser, is really good at parsing complex PDF layouts, text, and tables ...
TL;DR · AI 摘要
LiteParse 是一个开源文档解析器，擅长处理复杂 PDF 布局、文本和表格，完全基于启发式算法，无需 ML 模型且速度极快。
核心要点
- LiteParse 不依赖 VLM 或 ML 模型，而是基于启发式算法。
- 核心机制包括 Y 坐标排序、锚点提取和文本分类。
- 通过网格投影算法实现高效精准的文档解析。
The best part is it doesn't use VLMs or any ML models at all. It's entirely heuristics based and super fast ⚡️
The secret lies in our sophisticated https://t.co/WgwUbuQw8k" / X
Jerry Liu on X: "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 ⚡️ The secret lies in our sophisticated https://t.co/WgwUbuQw8k" / X
Don’t miss what’s happening
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 
The secret lies in our sophisticated grid projection algorithm. This blog post by
gives a comprehensive walkthrough on how it works: 
Sort lines based on similar Y coordinates 
Extract left, right, and center anchors 
Classify every text item into one of these anchors 
Project every text item into a grid column (the exception is any paragraph of flowing text, which is rendered separately) 
For any item projected into a grid column, that item is the forward anchor for all subsequent text items with the same anchor 
Postprocess the final outputs to remove extraneous spaces and margins As an example, take a look at the results below. You can see text in the left column, with a nicely overlaid table on the right. LiteParse is fully free and open-source, you can use it today! Either directly through the CLI or integrated into your coding agent. Blog: https://llamaindex.ai/blog/how-litep arse-turns-pdfs-into-text-a-deep-dive-into-the-grid-projection-algorithm?utm_medium=socials&utm_source=xjl&utm_campaign=2026-apr-… LiteParse repo: https://github.com/run-llama/lite parse…
Quote
LlamaIndex 
@llama_index
·
7h
LiteParse: our open-source, layout-aware PDF parser for AI agents. The secret? Grid projection. Instead of heavy ML layout models or flat text extraction, it projects text onto a monospace grid so alignment preserves structure. Full deep dive into the grid projection algorithm
·
4
8
65
71