How to add text to a PDF on iPhone or Android

What this workflow helps you do

A phone browser can run Edit PDF without a separate desktop program. Device memory, the mobile file picker, camera permissions, and download handling matter more on a phone, so smaller batches are easier to verify.

Choose a PDF from phone storage, enter new text, position it on the intended page, and save a new copy.

Plan the task in Edit PDF

Add text, images, highlights, drawings, and shapes to PDF pages. Move, resize, rotate, and undo your additions, then download the edited copy. Existing PDF text is not replaced or rewritten.

Edit PDF places new content over one or more PDF pages without rewriting the page content already in the document. Add text, JPG or PNG images, highlights, freehand drawings, rectangles, ellipses, and lines; then move, resize, rotate, layer, duplicate, or remove those additions before saving a new copy.

1. Add text and images to any required page. Choose a page, place a text box or a JPG or PNG image, and adjust the addition without changing the source PDF. Text controls include standard font families, size, bold, italic, colour, opacity, and rotation; added images can be moved, resized, rotated, layered, duplicated, or deleted.
2. Mark up pages with highlights, drawings, and shapes. Place a highlight area, draw a freehand line, or add a rectangle, ellipse, or straight line. Adjust the supported colour, fill, line width, opacity, and rotation settings, then inspect the page preview before saving.
3. Review additions across multiple pages. Move between page thumbnails and add more than one item before saving. Use undo and redo while editing, manage overlapping additions with the layer controls, and reopen the downloaded PDF to confirm every item is on the intended page.

Complete the task reliably on a phone

The mobile file picker may show Photos, Files, Downloads, a camera option, or cloud-provider shortcuts depending on the device. Select only the sources required by Edit PDF and return to the browser while processing finishes.

Large documents and high-resolution images use device memory. If the browser reloads or becomes unresponsive, keep the originals and retry with a smaller supported batch rather than repeatedly starting the same large job.

1. Use a current browser and keep the tab active during processing.
2. Save the result to Files or Downloads.
3. Reopen the download outside the tool before sharing it.

Settings and limitations to check

Can I edit existing PDF text online? You can place new text over a PDF page, but the current editor does not select, delete, replace, or reflow text objects already stored in the PDF.

Can I edit more than one PDF page in the same job? Yes. Move between the page thumbnails and add text, images, highlights, drawings, or shapes to the required pages before saving one edited copy.

What happens to an existing digital signature? Saving any edit changes the PDF and invalidates its existing cryptographic signature. The editor warns when it detects a digital signature and cannot preserve that signature.

Are my PDF and added images uploaded? No. The PDF editing and image embedding run in this browser without registration; review the downloaded copy before sharing it.

1. Use only the settings needed for the required result.
2. Keep the source file available for comparison.
3. Do not rely on an unsupported exact-size, fidelity, or security promise.

Review the completed file

Open the downloaded PDF on the phone and zoom into the added text.

Open the downloaded result in a separate viewer, inspect important pages or details, and repeat the workflow with adjusted settings if the output is not suitable.

1. Confirm the expected file type and page count.
2. Check important text, images, order, and orientation.
3. Share or submit only the reviewed copy.