Screenshots
Free local tools, no AI or account required
Open and View PDF
Thumbnail bar, page navigation; password-protected files can be opened by entering the password.
Page Management
Merge, split, rotate, delete, and reorder pages; long-press a page to select.
Encryption, Decryption, and Password Removal
Encryption uses AES-256. Password removal is limited to files where you already know the password and wish to remove it.
Compression
Reduce file size for easier transfer and sharing.
Watermark
Add text watermarks to indicate document usage.
Annotation
Pen, highlighter, text, redaction, and stamps; stamps can be imported via camera or photo library with automatic background removal.
Handwritten Signature and Recording
Handwritten signature with an optional synchronized recording of the signing process. Signature strokes, recordings, and signing metadata remain only on your device.
File Library
Centralized management of generated files; share, open in other apps, or save to your photo library.
Use your own AI account and quota, no subscription
Supports Google Gemini, OpenAI ChatGPT, and Anthropic Claude. Choose one and enter your own API key to use. Costs are settled between you and the provider based on their billing; we do not charge you and do not have access to your keys.
What you can do after entering your key
- Summarize entire documents
- Q&A based on document content, with page references for verification
- Convert PDF to Word documents
- Convert PDF to presentations
Your documents are not sent to our servers
This app does not have our own servers that receive your documents. Only when you use AI features are documents sent directly from your phone to the AI provider you have selected and logged into.
Signature strokes, live recordings, and signing metadata remain only on your phone and are not sent to AI or any servers.
When the app launches, it fetches a configuration file from our server, which is used only to adjust file size and page count limits.
FAQ
Is there a fee?
The app is completely free. Local tools do not require a key or an account; AI features use your own API key, and costs are billed by the provider. We do not charge any fees.
Will my documents be uploaded?
They will not be sent to our servers. Only when you trigger an AI feature are documents sent directly from your phone to the AI provider you have selected.
Can I use it without an AI key?
Yes. Reading, page management, encryption/decryption, compression, watermarking, annotation, and signing do not require a key.
Which AI models are supported?
Choose between Google Gemini, OpenAI, or Anthropic Claude, and enter your key in the settings page. Gemini keys can be applied for free; see the tutorial.
Can password removal unlock other people's files?
No. Password removal is limited to files where you already know the password and wish to remove it; it does not provide functionality to process others' files.
Are AI results always accurate?
AI-generated summaries, Q&A, and conversion results may contain errors. Please verify them yourself before formal use.
What languages are supported?
The app interface supports 37 languages and follows your phone's system language.
Other Apps and Services by AutoIt Studio
AI Card to Contacts
Snap a business card, let AI read the name, company and contact details, then save it to your phone contacts in one tap. No account; uses your own AI key.
Quietune
One tap silences calls, texts and notifications while you practice; built-in metronome, tuner and practice log.
NPatrol
Multi-company NFC/QR patrol check-in: scan a tag with your phone, GPS-backed, and review patrol records live in the back office.
SpotPing
Set a destination and get notified as soon as a parking space opens up nearby. Covers many cities and counties across Taiwan, with web push, email, LINE and Telegram alerts.
Taiwan Parking Live
No login needed: check live remaining spaces in car parks and roadside bays across Taiwan. One tap finds spots within 500 m to 5 km, using open data from local governments, updated every minute.
AutoIt Studio
AI as your IT department: websites, apps, SEO/AEO, databases and AI customer service.
Keith Lin
Hands-on notes on actually using AI tools and APIs, every step tried with screenshots.