山田ツール
読み込み中...
山田ツール
読み込み中...
No registration. No file upload. No installation.
Type on any PDF directly in your browser. Add text, electronic Japanese stamps, and auto-fill dates. Fill in application forms, contracts, and resumes — completely free with zero server upload.
Open PDF Editor (Free) →Japanese UI • Tool opens in Japanese — functionality is the same
All PDF processing happens 100% client-side using PDF.js. No server upload means zero privacy risk — safe for confidential contracts, tax documents, and personal records.
Generate a circular Japanese-style red seal from any 1-4 character name. Unique to Yamada Tools — no other free PDF tool offers this. Perfect for Japanese business documents.
One click inserts today's date in Japanese Reiwa era format (令和8年3月25日) or Western format. Essential for Japanese government applications and administrative forms.
No registration. No login. No premium tier. No file size limits for basic use. Unlike Adobe Acrobat Online or iLovePDF, Yamada Tools requires no account creation whatsoever.
Works in Chrome, Firefox, Safari, and Edge. No app download, no plugin, no extension required. Open the page and start editing immediately.
50-step undo history (Ctrl+Z). Multi-page PDF navigation. Drag to reposition any text or stamp. Copy/paste elements. Full editing workflow in the browser.
Click 'Select PDF' or drag and drop your PDF file. No upload — the file stays in your browser.
Click the 'Add Text' button, then click anywhere on the PDF. Type your text, adjust font size and color.
Click the 'Download' button. Your edited PDF is generated locally and saved directly to your device.
| Feature | Yamada Tools | Adobe Acrobat Online | iLovePDF | PDF24 |
|---|---|---|---|---|
| Completely free | ✅ | ❌ Premium required | ❌ Limited | ✅ |
| No registration | ✅ | ❌ Login required | ❌ Limited | ✅ |
| No server upload | ✅ | ❌ | ❌ | ❌ |
| Electronic stamp | ✅ | ❌ | ❌ | ❌ |
| Japanese era dates | ✅ | ❌ | ❌ | ❌ |
| Multi-page support | ✅ | ✅ | ✅ | ✅ |
All PDF processing in Yamada Tools runs entirely client-side using PDF.js (Mozilla) and pdf-lib — two trusted open-source libraries. Your PDF file is loaded directly into browser memory. No data is transmitted to any server at any point.
This means you can safely use this tool for: confidential business contracts, tax return documents, medical forms, personal identification documents, and any other sensitive materials.
When you close the browser tab, all data in memory is gone. The site uses HTTPS encryption for the connection itself. No cookies are set by the PDF tool.
Yes. Yamada Tools PDF text input is 100% free with no hidden costs, no premium tier, and no registration required.
No. You can use the tool immediately without signing up, logging in, or installing anything. Just open the page in your browser.
No. All processing happens entirely in your browser using PDF.js. Your file never leaves your device. This makes it safe for confidential documents.
Google Chrome, Microsoft Edge, Firefox, and Safari (latest versions). Chrome and Edge provide the best experience.
Yes. The hanko feature generates a circular red Japanese-style seal from 1-4 characters you enter. You can choose from 5 sizes and place it anywhere on the PDF.
Yes. The date auto-insert button can insert today's date in either Western format (e.g., 2026年3月25日) or Japanese Reiwa era format (e.g., 令和8年3月25日).
Yes. You can navigate between pages and add text, stamps, or highlights to each page individually. All pages are saved in one PDF on download.
Yes. Use Ctrl+Z (or the undo button) to undo the last action. Up to 50 steps of undo history are supported.
Any PDF document — application forms, contracts, invoices, resumes, worksheets, insurance documents, and more. Both scanned and text PDFs are supported.
For basic text entry, stamp placement, and date insertion tasks, yes. Yamada Tools handles these common use cases entirely free in your browser, without Adobe Acrobat's subscription cost or login requirement.
Free. No sign-up. Your file stays in your browser.
Open Free PDF Editor →Note: The PDF editor interface is in Japanese. All features work the same regardless of language.