Documents to send.
Sending documents? Add the recipient or intended use to the copy, then check each page of the PDF.

Watermarks · Capture · Metadata
Prepare a PDF, photo or video with a watermark suited to its intended use.
Inside OS Watermark Pro
Four real app views to compose, check and prepare your copies.
1 / 4 · Watermark
Watermark
Add a usage note, name or signature to your PDF. Check its appearance directly on the document before creating the copy.
The imported original stays unchanged.
Read the guide
Layers
Combine text, logos, signatures or QR codes on independent layers. Select elements and adjust their position in the preview.
Reuse your compositions with templates and projects.
Read the guide
Metadata
Review the original’s information and choose whether to keep or remove personal metadata and GPS data when creating the copy.
These choices do not remove information already visible in the image.
Read the guide
Timestamp
Take a photo or video with a visible timestamp. Adjust the appearance of the text without changing the recorded instant.
Location is optional and depends on permissions and availability.
Read the guide
Actual app screenshots. Some features shown require Premium or Family.
Features
PDF · JPEG · PNG · HEIC · MP4 · MOV
Sending documents? Add the recipient or intended use to the copy, then check each page of the PDF.
An image to publish, a video to identify: combine text, a logo or a signature to suit your project.
A photo taken on site with the date and time visible: retain the context of your visit without presenting the timestamp as a certification.
Combine text, logos, signatures, QR codes, emoji and illustrations on independent layers: three elements in Free, 32 with Premium or Family. Colours, opacity, backgrounds, shadows and everyday adjustments stay free; outlines and advanced effects are paid.
Indicate a recipient or intended use on a document copy.
A watermark does not prevent every reuse or certify the file’s origin.
Select a watermark on the preview, move it and resize it with the frame handles. Check PDF pages or video playback, and use two fingers to zoom the document.
Make sure a mark remains readable without covering essential document information.
Keep compositions as templates or resume a project with its source. Apply the same settings to a batch of photos, PDFs and videos; each result and error remains identifiable.
Take a photo or record in 4:3, 16:9 or square format. Choose from five date and time formats, with the time zone shown. Adjust the appearance in a dedicated editor without rewriting the captured instant. Video displays a clock that advances during playback and in the export. You can add GPS coordinates or an address available at capture; the location stays fixed.
View metadata and remove personal information for free. Premium and Family let you edit supported fields. Uneditable data stays read-only; cleaning metadata does not erase text already visible in an image.
Review available information before sending a photo.
Removing metadata does not erase text already visible in an image.
Organise copies in folders, rename, open or share them. Choose Files or, for photos and videos, Photos. Premium/Family adds password protection. The imported original remains untouched.
Prepare several images with the same visual identity without rebuilding the composition.
The imported original stays unchanged. Re-encoding can change compression or appearance.
Compose your watermark. Adjust its elements directly in the preview.
Check the pages, video appearance and supported metadata before exporting.
Save to Photos or Files, depending on the content. The imported original stays unchanged.
Privacy
Your documents, photos, videos, signatures, metadata, watermark text and QR code content are processed on your device. No OS Studio account is required. The app does not upload them to an OS Studio server or to the advertising service for processing.
A watermark helps identify a copy’s intended use; it cannot prevent all reuse or certify a file’s origin. Metadata is not a certification.
At your own pace
Start for free with ads, or choose ad-free Premium or Family to extend what you can do. No introductory trial is offered.
€0 · with ads
€14.99/year or €1.49/month
€19.99/year or €1.99/month
All Premium features for up to 6 people through Apple Family Sharing. The subscription shares access, never files or projects automatically.
Every plan includes photos, PDF, video and timestamps, Simple and Advanced modes, project resumption and export to Photos or Files. No daily export quota or forced OS logo. Video capture retains a technical 10-minute limit.
Native dimensions are preserved within supported-format limits. Re-encoding can change compression, codec or rendering; universal HDR or video frame-rate preservation and lossless output are not promised.
France reference prices. Apple displays the applicable price and billing period before purchase. Subscriptions renew automatically unless cancelled in Apple settings. Manage and restore purchases in the app: Settings → Subscriptions.
Support
Find helpful answers, privacy information and a way to contact the studio.