HTPBE.TECH
Detect if a PDF was tampered with — in seconds
What it does
HTPBE analyzes the binary structure of PDF files to detect post-creation modifications. Upload any PDF and get a verdict — intact, modified, or inconclusive — based on metadata timestamps, Creator/Producer fields, xref revisions, and digital signature status. Free web tool, no account required. REST API available for automated workflows.
Does the same job
all alternatives →- MYMake your PDF look scanned in browser2022 · lookscanned.io · ▲579
Implement scanyourpdf.com in JavaScript. No backend servers needed.
- PDPDF Debugger – Inspect Structure of PDF Files2023 · pdf.hyzyla.dev · ▲157
- PDPDF-Diff - Visualize any differences between two PDFs2022 · github.com · ▲169
More work this month
the category →
The app store for voice native apps that lives in your notch
Work · 28d ago · voiceos.com
Mac-native app for screenshots, recordings and collaboration
Work · 5d ago · cleanshot.com
Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
- IB
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
- BC
Life & fun · Apr 2026 · sam-burns.com
- IB
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app