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CrabTools: free
PDF & QR tools, right in your browser.

Merge and split PDFs, generate WiFi QR codes with your logo and convert images. Everything runs in your browser: your files never leave your device.

PDF tools

Merge, split, compress and create documents without uploading them to any server.

01 PDF

Merge PDF

Combine documents in the exact order you choose.

POST /api/pdf/merge
02 PDF

Split PDF

Extract ranges like 1‑3, 5, 8‑ or blocks of N pages.

POST /api/pdf/split

QR tools

Branded codes, exportable as vector and ready to print.

01 QR

WiFi QR code with logo

Share your network with one scan, with your brand in the middle.

POST /api/qr/wifi

Currently available in Spanish only. Español →

Custom development

Need a system, an app, AI agents, automations or a custom solution for your business?

We build it. Tell us what you need and Crabsoft will make it happen.

Contact us