100% private โ€” files stay in your browser

Every PDF tool you need,
organized by workflow.

16 PDF tools in 6 categories โ€” convert, edit, compress, AI-summary, generate business docs, and learn. Free, fast, and zero signup required.

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100% Private
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Lightning Fast
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No Signup
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Works Everywhere

6 PDF tool categories, 16 tools

Organized by workflow, not by feature. Pick a category, find the right tool in 2 clicks.

More PDF utilities

Standalone tools for specific PDF jobs.

Why PDF Toolkit AI?

Built by people who use PDFs every day โ€” and hate wasting time on them.

Privacy by design

Every tool runs entirely in your browser using WebAssembly. Your PDFs are never uploaded, never stored, never seen by us.

Blazing fast

No upload, no queue. Processing starts the millisecond you drop a file. Even big 200-page PDFs finish in seconds.

Target sizes

Need exactly 100KB for a form upload? Specify a target size and we'll compress to match, no manual tweaking.

Works anywhere

iPhone, Android, Windows, Mac, Linux, Chromebook โ€” anything with a modern browser. Install as a PWA for offline use.

Multi-language OCR

Read scanned documents in 100+ languages โ€” including English, Chinese, Spanish, Japanese, Arabic, Hindi.

Batch download

Process 20 files? Get a single ZIP. No clicking through 20 download dialogs.

Frequently asked questions

Everything you need to know before uploading your first PDF.

Is PDF Toolkit AI really free?

Yes. All 10 tools are free with a generous daily limit (20 files/day on free, unlimited on Pro). Pro is $4.99/month or $39/year.

Are my files uploaded to a server?

No โ€” and we mean it. Open your browser's Network tab and you'll see zero file uploads. Everything happens locally using pdf-lib, pdf.js, and Tesseract.js. Your files never leave your device.

Do I need to create an account?

No signup required. We hate signup walls as much as you do. Just open the tool and start working.

How large a PDF can I process?

Free plan handles up to 50MB per file, Pro up to 500MB. For very large files, we recommend using a desktop browser (Chrome/Edge) on a machine with at least 8GB RAM.

What does "remove watermark" actually do?

We use two strategies: (1) strip true PDF watermark objects (the embedded overlay layer), and (2) AI-based masking of rendered watermark pixels. Strategy 1 works for true watermarks added in Acrobat/Word. Strategy 2 works for "burned-in" watermarks but is best-effort.

Can I use the AI Summary without an account?

Yes โ€” for short documents, summary runs entirely on-device. For longer documents, we route through OpenAI / Anthropic APIs but your file is sent as base64 over HTTPS, not stored, and not used for training. Set your own API key in settings to use your own account.

Is there an offline / desktop version?

The PWA (install from your browser's address bar) works fully offline for compress, merge, split, metadata, remove-pages, and extract-images. OCR and AI Summary need internet for the AI models.