TopicSplit — offline semantic text grouper

🔓 Unlock Batch Mode

You're about to split multiple files at once. Batch mode saves researchers and writers hours — processing entire folders of articles in one click.

📄 article1.txt4 segments

📄 article2.txt7 segments

📄 transcript.txt12 segments

One-time tip, no subscription. Your support builds more free tools. 🙏

Split text by meaning, not word count

Paste any article, transcript, or notes → get clean topic segments. Perfect for Obsidian, Logseq, Notion, and PKM workflows.

🚀 Try Demo — No Paste Needed For Researchers →

🔒 100% offline — nothing leaves your browser ⚡ Zero install — just paste and split 💰 Free — MIT licensed, forever

For Obsidian → For Logseq → For Researchers → How to split articles → Pro CLI → Split text by meaning → Bookmarklet → Meeting Splitter → Obsidian Plugin →

"I paste every article I want to remember into TopicSplit. It finds the topic boundaries I'd spend 10 minutes deciding. The markdown export drops straight into Obsidian."

— A note-taker who wanted atomic notes without the manual work

1 · Paste your text

Sensitivity 55 skip tiny segments

Ready.

📖 New: How to break down articles into atomic notes ·

💡 Know someone who uses Obsidian, Logseq, or Notion? Send them TopicSplit — free, no install, solves a real problem.

2 · Topic segments

Result appears here.

⚡ This split took ~1 second

If it saved you 10 minutes of manual work, a $1 tip keeps me building free, private tools like this.

☕ Tip $1 Ko-fi 💳 PayPal $3

100% of tips fund the next free tool. Thank you for supporting independent open-source.

📊 Share this result card

segments

sentences

words

Split with TopicSplit — free, offline, no tracking

⬇️ Download image

🔒 Batch Mode (up to 3 files in trial)

Paste multiple texts separated by --- or upload .txt files.

📎 Embed TopicSplit on your site

Drop this iframe on any page — your visitors can split text without leaving your site.

<iframe src="https://andrwspt.github.io/topicsplit/" width="100%" height="500" frameborder="0" title="TopicSplit — free offline text grouper"></iframe>

✓ Copied!

🏷️ Add a "Powered by TopicSplit" badge

Link back to TopicSplit with a clean badge for your blog or documentation site.

<a href="https://andrwspt.github.io/topicsplit/" target="_blank" rel="noopener" style="display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:#161b22;border:1px solid #2b3340;border-radius:20px;font-family:system-ui,sans-serif;font-size:12px;color:#8b98a5;text-decoration:none;"><span style="color:#4dd0a7;font-weight:700;">💚</span> Powered by TopicSplit</a>

✓ Copied!

☕ Keep the tools coming

TopicSplit is free and MIT licensed. If it saved you time, a $1 tip keeps me building more free, private tools. Every dollar goes to the next project.

☕ $1 Ko-fi 💳 PayPal

Need to batch-process files?

TopicSplit Pro is a CLI tool that splits entire folders of articles in one command. Same algorithm, same privacy — just for power users.

Also available: Obsidian plugin — split text directly inside your vault.

View Pro CLI → Obsidian Plugin →