Edit PDF
Open a PDF, add text, signatures and marks, then save. Your file never leaves your device.
Pick a tool, then click or drag on the page.
What you add is drawn on top of the original pages. White out covers text but does not remove it from the file.
Saving your signature for next time is a Premium feature (¥980/month). Learn more
PremiumSave your signature to reuse it next time. The same Premium also unlocks extra features in our other tools. Learn more
Install Kitbench as an app to open PDFs and images with right-click
PDFs are edited in this page only. Nothing is uploaded. What you add is drawn on top of the original pages; the original text is kept. Uses pdf.js (Apache-2.0) to show pages and pdf-lib (MIT License) to save.
How to use
- 1. Open a PDFDrop it on the box or click to choose.
- 2. Add what you needPick Text, White out, Highlight, Pen, Box, Line, Arrow, Image or Signature, then click or drag on the page. Use Select to move or resize.
- 3. SaveClick “Save PDF” to download the edited file.
What each tool does
| Tool | Use it to |
|---|---|
| Text | Fill in forms, add notes, dates and names |
| White out | Paint white over text or marks so they don’t show (the text stays in the file, so don’t use it to hide secrets) |
| Highlight | Mark important parts |
| Pen, Box, Line, Arrow | Point things out, circle mistakes |
| Image, Signature | Add a stamp, logo or handwritten signature |
Private by design
Your PDF is never sent to a server. It is shown and saved inside your browser, so documents with business or personal information stay on your device.
Pages are shown with pdf.js (Mozilla, Apache-2.0) and saved with pdf-lib (MIT License).
Sources: pdf.js (Apache-2.0), pdf-lib (MIT License)
FAQ
Who is this tool for?
It suits people filling in a PDF form with their name, address and date, freelancers and small business owners signing and returning contracts or consent forms, teachers, students and reviewers who mark up documents, office staff adding a stamp or logo image, and anyone editing PDFs with personal details (nothing is uploaded).
When is it most useful?
For example, when you want to fill in a form without printing it, sign the last page of a contract, add highlights and notes to lecture slides or a draft, rotate a page that was scanned sideways, or drop pages you don’t need before saving.
What do I gain from using it?
No more printing, writing by hand and scanning again. There’s no account to create and nothing to install; open your browser and start. Text you add is saved with a clean font, so the result is easy for the recipient to read.
Are my files uploaded?
No. Editing happens in your browser, so contracts and forms with personal details never leave your device. When you save added text, the font is loaded from this site, but the text you typed is not sent. If you use Premium, the page checks once a day that your subscription is active; only your Premium key is sent for that, never your PDFs.
Can I change the text that is already in the PDF?
Not directly. Cover it with White out, then add new text on top with Text. The original text is still inside the file under the white box.
Is White out safe for hiding private information?
No. White out only covers what you see; the original text can still be copied or found by search. Don’t use it to remove confidential information.
How do I sign a PDF?
Click Signature, draw it with your mouse or finger, then press Add. The signature is placed on the page you’re looking at. Drag it to move it, and drag the round handle to change its size.
Can I add a stamp or logo image?
Yes. Click Image and choose a PNG or JPEG file. It’s placed on the page you’re viewing, and resizing with the round handle keeps its proportions. JPEG images have no transparency, so their white background covers what’s underneath; a PNG with a transparent background won’t hide the text or lines below.
Does it work on a phone?
Yes. Tap to add text and drag to draw boxes and lines. With any tool other than Select, dragging draws on the page, so switch back to Select to scroll. To change text you added, select it and tap it again.
Can I edit protected PDFs?
No. PDFs with a password or editing restrictions can’t be opened here, even if they open without a password elsewhere. Ask the sender for an unrestricted copy.
Can I fill in a PDF with form fields?
There’s no way to type into the form fields themselves; add text on top of them with Text. When you save with additions, the form fields are flattened into the page, so they can’t be filled in as fields afterwards.
Can I change the text size and color?
Yes. Choose a size of 10, 12, 14, 18, 24 or 36 and pick a color. To change something you already added, select it first, then change the size or color. For pen, boxes, lines and arrows, the size sets the line thickness.
Can I undo a mistake?
Yes. Use Undo and Redo (up to 100 steps back). On a computer, Ctrl+Z (⌘+Z on a Mac) undoes and adding Shift redoes. To remove one item, select it and press Delete or the Delete key.
Can I rotate or delete pages?
Yes. Use Rotate under each page to turn it 90 degrees, and Delete page to remove it. A deleted page is shown faded, and pressing the button again brings it back. You can’t delete every page.
Can I add text in languages other than English?
Yes. Japanese is saved with the BIZ UDPGothic font, basic Latin text such as English with Helvetica, and languages like Polish, Russian and Vietnamese with Noto Sans. For the embedded fonts, only the characters you used are included, so the file stays light.
Can I open long PDFs?
There is no set limit. All pages are drawn when the file opens, so long or large PDFs can be slow or heavy on phones and tablets.
Can I save my signature for next time?
That’s a Premium feature. With Premium, your signature is saved in this browser and you can reuse it with “Use saved”. On the free plan you can still draw and add a signature each time.
What happens to my original PDF?
It isn’t changed. The edited PDF is saved as a new file with “_edited” added to the original name. If you try to leave the page while it has additions, you’ll be asked to confirm.
Premium
One Premium. Every upgrade, as much as you like.
- Save your signature to reuse it next time
- All paid features in every extension
- Premium features in Kitbench web tools
- Extensions we release later are included
- Monthly¥980/month
- Yearly¥9,800/year (about ¥817/month)
- Lifetime¥14,800 once
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