Need to show a clear date on every page of a PDF before you send it out? The Add Date to PDF tool stamps a short line of date text onto each page. It runs in your browser and saves a new copy of the file.
This tool is for people who sign, file, or share dated documents. Think of invoices, contracts, or handouts that need a visible date. You upload the PDF, set a few options, and download the stamped file.
Table of Contents
- What the Tool Does
- How to Use It, Step by Step
- How It Works
- A Real Example
- How to Place the Date Well
- Tips and Common Mistakes
- Limitations and Assumptions
- FAQs About the Add Date to PDF
What the Tool Does
The tool takes one PDF and writes your date onto every page. It gives you three settings and one button.
- Date Text: a text box that fills in today in year-month-day form, such as 2026-07-30.
- Position: a menu with Top Right, Top Left, Bottom Right, and Bottom Left. Bottom Right is preset.
- Font Size (pt): a number box set to 10, with a range of 6 to 24.
- Stamp Date & Download: the button that writes the date and saves the file.
The date is typed as plain text, so you can enter any words you like. The result saves as pdf-with-date.pdf.
How to Use It, Step by Step
- Click the box that reads Drag & drop a PDF to add a date stamp, or drop a file onto it.
- Wait for the status to read PDF loaded. Ready to stamp date.
- Edit the Date Text box, or keep the date it filled in for today. A blank box is not allowed.
- Pick a corner in the Position menu and set the Font Size if needed. Values outside 6 to 24 are pulled back into range.
- Press Stamp Date & Download and save pdf-with-date.pdf.
How It Works
The tool opens your PDF and loads a bold Helvetica font. It then writes your date text on each page in the corner you chose. The date sits about 30 points in from the page edges.
Upload PDF→Set Date and Position→Download Stamped PDF
The text is drawn in a dark gray color on every page. The work runs in your web browser with the pdf-lib library. The file is built from a local blob and is not sent to any server.
A Real Example
Marcus had a two-page service agreement to mark with the signing date. He loaded agreement.pdf and the status read PDF loaded. Ready to stamp date. He kept the date box, set Position to Bottom Right, and left Font Size at 10.
Marcus pressed the button. His browser saved pdf-with-date.pdf, with the date in the bottom right corner of both pages. The status then read Done. Date stamped and your download has started.
How to Place the Date Well
Bottom corners work well when the top of the page holds a logo or title. Top corners suit forms where the footer is busy. The date is drawn on top of the page, so pick a corner that is clear.
Raise the font size for large pages or for a date that must stand out. A size near 10 fits most letter-size pages. The same date and corner apply to every page in the file.
Tips and Common Mistakes
The Date Text box accepts any characters, so check your spelling before you stamp. A long line in a corner can run close to the edge. If you want the time as well, the add timestamp tool covers that.
This tool stamps a date, not a page count. To number pages, use the add page numbers tool. For a repeating line across the bottom, the add footer tool fits that need.
To brand a page with a logo or label, try the add watermark tool. You can find more options in the PDF tools hub.
Limitations and Assumptions
- The tool handles one PDF per run. There is no batch upload.
- The date goes on every page in the same corner. You cannot pick single pages.
- There is no color choice. The text is drawn in a fixed dark gray.
- There is no live preview, so open the saved file to check placement.
- Font size is limited to a range of 6 to 24 points. Out-of-range values are forced back into that range.
- Encrypted or password protected PDFs may fail to open. The tool then shows a short error line and saves no file.
FAQs About the Add Date to PDF
Can I Choose My Own Date Format?
Yes, in a way. The Date Text box is free text, so you can type any format you like. There is no preset list of formats.
Can I Add the Date to Only One Page?
No. The tool writes the same date on every page. There is no page range option.
Can I Change the Text Color?
No. The date is always drawn in a dark gray. Only position and font size can change.
Are My Files Uploaded to a Server?
No. The code reads and rebuilds the PDF inside your browser. Nothing is sent over the network.
What Happens If I Leave the Date Text Blank?
The tool stops and asks you to enter the date text. It no longer stamps a default date on its own.
Is There a Preview Before I Download?
No. There is no preview. Open the downloaded file to check the date and corner.
This tool runs in your web browser and may not handle every PDF file, font, or browser the same way. Keep a backup of your original file. Reviewed for general accuracy by Prof. Dr. Khalil Mudassar, PhD.