About PDF Tools
PDF is the document format we exchange most — contracts, reports, resumes, receipts. Yet handling it often hits a "do I need paid software?" wall; Adobe Acrobat runs about $20/month.
JiniTools PDF tools cover the most common jobs — merge, compress, split, sign, edit pages — free and without sign-up. More importantly, your PDF never goes to a server, so the "where does my uploaded contract go?" worry disappears.
Under the hood it uses vetted open-source libraries like pdf-lib, and everything runs in browser memory. It works the same on mobile.
What people use it for
Merge several PDFs into one
When attachments arrive split across files, or travel receipts need tidying into one file, drag them into the merge tool and set the order.
Shrink a PDF that exceeds an upload limit
When a portal caps uploads at 10 MB or an email bounces, the compress tool recompresses only the photos and scans inside — text stays text, so copy and search still work.
Sign or stamp a contract
Skip print → sign → scan: draw a signature or upload a stamp photo and place it on the page.
Pull only the pages you need
Extract 5 pages from a 200-page manual, or just the pages you must submit, with the split tool.
Watermark documents for sharing
Add a diagonal "Confidential" or company watermark to deter leaks. The watermark tool supports Korean text, opacity, and angle.
Which tool to pick
- Many files into one PDF merge. Drag to reorder.
- Make it smaller Compress PDF. Light, Recommended or Strong — text stays intact.
- One file into many PDF split. Page ranges or every N pages.
- Rotate or remove pages PDF page editor (rotate, delete, reorder, grayscale).
- Sign or stamp Sign PDF.
- Number the pages Add page numbers (skip the cover, 1 / 10 style).
- See what changed Compare PDFs (changes in red, text side by side).
- Photos ↔ PDF Image to PDF, PDF to image.
- Add a mark PDF watermark (text, diagonal, opacity, rotation).
FAQ
Can it handle password-protected PDFs?
No. Remove the password in a PDF viewer first, then use the tool.
Is there a file-size limit?
Since processing is in-browser, there is effectively no hard limit, but it depends on device memory — roughly 500 MB on a PC, 200 MB on mobile.
Can I reorder pages when merging?
Yes, drag the cards in the merge tool to reorder. Touch is supported on mobile.
