Singularity
Labs.
EN

Edit PDF online for free

Write on a PDF, add images, shapes, and annotations, then download the modified document. Free functions are available without an account, and the file stays on your device.

or drag and drop the document here

PDF up to 40 MB · The file stays on your device

Local processing. The document is not uploaded to servers. After closing the session, the browser and modifications will keep it on your device for a maximum of 24 hours.

Write and annotate a PDF without installing software

Need to complete a form, add a note, or insert a logo? Open the document in your browser, place the elements on the pages, and download a new copy. The exported PDF preserves the original pages.

Write on a PDF

Add new text boxes, choose font size and color, and position them where needed.

Add images and shapes

Insert a logo or photo and draw rectangles, ellipses, lines, and arrows on the document.

Freehand annotate

Draw with your mouse, trackpad, or touchscreen and adjust color, thickness, and transparency.

Work on your device

Free edits are processed in your browser: the PDF is not sent to our servers.

When is it useful to edit a PDF online

Complete a form

Write in fields of an unfillable form and save a copy to send.

Review a document

Add notes, highlight a step, or draw an arrow on a page.

Customize a file

Insert an image or logo into a proposal, quote, or datasheet.

New text or existing text?

To write on a page, the free version is enough. If instead you need to correct text already present in the PDF, you'll need the advanced Premium editing. For a scanned document, you can use the Italian OCR, included in the 4.90 € per month plan. Always check the result before sending it: complex fonts and layouts may require adjustments.

How to edit a PDF online

  1. Select the document

    Upload a PDF from your device or drag it into the selection area.

  2. Add your changes

    Write on the PDF, insert images, draw, or add shapes on the pages.

  3. Download the result

    Changes are incorporated into the new document and the download starts automatically.

Frequently asked questions

Do I need to register to edit a PDF?

No. You can add text, images, shapes, and drawings and download the result without creating an account. Advanced features require Premium.

Can I edit PDFs for free?

Yes. Adding text, images, drawings, shapes, and exporting are available for free.

Are files uploaded to servers?

No. Free functions process PDFs and images directly in the browser and do not store documents on our servers.

Can I edit text already present in the PDF?

Editing the original content is a Premium feature. If the document is a scan, the Italian OCR can recognize its text. Accuracy depends on the quality of the scan, the structure of the PDF, and the fonts.

Does the downloaded PDF retain the original pages?

Yes. The exported file retains the original pages and incorporates the added elements in the chosen positions.

Do more with Singularity Tools Premium

OCR, advanced PDF editing, multi-page cookie scans and every upcoming Premium tool in one plan.

Get Premium — €4.90/month

Singularity Tools Premium

Upgrade to Premium to unlock advanced features of the PDF editor and other Singularity Tools.

€4,90 per month

Scanned PDF OCR

Recognize Italian text directly on your device and convert it into editable blocks.

Find and replace

The replacement affects the real content of the PDF when font and structure are modifiable securely.

Enter the text to search for.

Original images

Select an embedded image on the page to replace or remove it permanently from the exported content.

Hyperlink Management

Select an element in the editor to use its area, then enter an HTTPS address.

Links present on the page

Protect PDF with password

The password will be applied to the downloaded file with AES-256 encryption. It is not saved.

Batch processing

Remove metadata from multiple PDFs locally. Each result is downloaded separately.

History and project

The current project is stored on the device for 24 hours. You can also export a copy of the project and reopen it later.

Thank you for using Singularity Tools

Your PDF is ready. Discover other free tools available to simplify your work.

Discover all tools