How to convert a PDF drawing into an editable DXF (without uploading your drawings)
If you work with construction or survey drawings, you have probably received a PDF and needed the same drawing in CAD. Print shops and cloud convert…
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I Built a Browser-Local PDF Redaction Tool Because a Black Rectangle Isn't Redaction
A black rectangle can hide text on screen without removing the text stored inside a PDF. Someone may still be able to select, copy, search, or recov…
How to Parse Resume PDFs Extract Text and Structure Model Ready Fields
Short answer: extract positioned text with a real PDF parser, normalize it without destroying evidence, ask a model for typed candidate fields, and…
The black box in your PDF is a shape, not a delete key
There are two ways to black out a name in a PDF. The first deletes the text and then draws a black rectangle where it used to be. The second just dr…
PDF Tamper Detection API for C#: ASP.NET Core Integration Guide
Originally published at htpbe.tech . The version on htpbe.tech stays in sync with the latest detection algorithm — refer to it for the canonical tex…
I built a client-side trade document validator — no upload, no server, just the browser
The problem I kept hitting: an international invoice with a line total that's off by a cent, or an HS code that appears in the commercial invoice bu…
A Practical Three-State Validation Model for User-Generated PDFs
Most form validation libraries answer one question: is this field valid? Document-generation products need to answer a harder question: is this file…
I kept rebuilding the same PDF plumbing — so I turned it into one API
Every app eventually needs documents. Invoices. Reports. Exports. Parsing whatever a user uploads. And every single time, you end up doing the same…
Snappt Alternative: A Self-Serve PDF Fraud Detection API for Rental & Beyond
Originally published at htpbe.tech . The version on htpbe.tech stays in sync with the latest detection algorithm — refer to it for the canonical tex…
PDF Tamper Detection API for Java: Spring Boot Integration Guide
Originally published at htpbe.tech . The version on htpbe.tech stays in sync with the latest detection algorithm — refer to it for the canonical tex…
SBA-7a Loan Stip Fraud Detection: Post-PPP Lessons
Originally published at htpbe.tech . The version on htpbe.tech stays in sync with the latest detection algorithm — refer to it for the canonical tex…
How to Make a PDF Look Scanned in the Browser
Making a PDF look scanned is a surprisingly practical document-processing problem. Users often want a digital PDF to resemble a printed, signed, and…
Generate, read, and merge PDFs in PHP — no GPL, no FPDI
Every PHP project eventually needs a PDF — an invoice, a ticket, a report, a signed contract. And every time, you hit the same two walls: Generating…
Why HTML-to-PDF Breaks in Production (and What to Use Instead)
Almost every "generate a PDF" feature starts the same way. You already have HTML. You already have CSS. So you reach for the obvious move: render th…
The case for deterministic PDF filling
AI can read almost any document now. The harder question is what writes the answer back — and for anything an auditor might ever look at, that write…
Why Building a PDF Engine in Go Will Help You Understand Go Concepts Better
There is a class of projects that teaches you more about a language than any tutorial ever could. Building a PDF engine from scratch in Go is one of…
I built a small tool to make PDFs easier to read at night
I read a lot of PDFs at night, especially on my phone. And honestly, PDFs are not great for that. Most of them still feel like digital paper: white…
I Built pretext-pdf: Serverless PDFs Without Chromium
I Built pretext-pdf: Serverless PDFs Without Chromium I got frustrated with PDF generation in Node.js. Every tool had trade-offs, and none of them f…
I Needed to Remove a QR Code from an Image, But Every Solution Was Complicated
A few weeks ago, I was updating some marketing assets for one of my projects. Everything looked good until I noticed a small problem. The image cont…
Generating PDFs shouldn't be this hard in 2026
There's a moment every developer knows. You need to generate a PDF. It looks simple. You've done harder things. Three hours later, you're reading a…