Free Online PDF Editor with Correct Thai Text
Type text, sign, tick boxes and rearrange pages in your browser. No sign-up, and your file is never uploaded.
Your file is not uploaded — everything happens on your device
Edit PDFs and fill in forms in Thai or English, free and without uploading
Open a PDF and type text, sign, tick or cross boxes, add images, draw and rearrange pages right in your browser. Free, no account, and your file is never uploaded to a server.
Most online PDF editors break Thai: vowels and tone marks float in the wrong place, stack on top of each other or turn into boxes. This editor shapes Thai text the same way a browser does and embeds the Thai font (Sarabun or Noto Sans Thai) in the file, so the text looks right in every PDF reader and can still be searched and copied.
Everything runs on your own device — opening, editing and building the new file. Nothing is sent to a server, which makes it suitable for application forms, government paperwork and anything else with personal details on it.
Tools for filling forms and marking up documents: text with font, size and colour; whiteout boxes; signatures you draw, type or upload; PNG/JPG images; rectangles, ellipses, lines and arrows; pen and highlighter; check marks, crosses and dots; and page rotate, delete, reorder and insert-blank. Every step can be undone.
Good to know: “Cover existing text” places a white box over the old text and lets you type new text in the same spot. The old text is still in the file underneath, so it is not a way to remove confidential information. Password-protected PDFs are not supported.
How to use
- Drop a PDF on the page or choose one (up to 100 MB).
- Pick a tool, such as Text, and click where you want to type.
- Sign, add marks, or rearrange pages from the page panel.
- Press “Download PDF” to save the edited file to your device.
Frequently asked questions
Is it free? Do I need an account?+
It is completely free. No sign-up, no login and no coins.
Will Thai vowels and tone marks display correctly?+
Yes. Thai text is shaped before it is written and the Thai font is embedded, so marks sit where they belong in every PDF reader.
Is my file uploaded anywhere?+
No. The file is opened and edited in your browser, and the downloaded file is created on your device.
Can I change text that is already in the PDF?+
Use “Cover existing text”: it covers the old text with a white box and lets you type replacement text in the same place. The original text remains underneath the box.
How do I sign a PDF?+
Choose the Signature tool, then draw with your mouse or finger, type your name in a handwriting font, or upload an image of your signature. Drag it into place and resize it.
Can it open password-protected PDFs?+
Not yet. Remove the password first, then open the file here.