Text Watermark - WaterStamp
Add Copyright to Photos &Video
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
WaterStamp lets you add watermarks to videos, illustrations, photos, and other images.
You can add copyright text, credit text, and brand logos to clearly show ownership of your content.
Completely free with no registration or login required.
— Features —
• Single text watermark
• Wallpaper style watermark
• Adjust text color, size, spacing, and transparency
• Outline text effect for natural blending
• Over 500 fonts
• Freely customizable colors
• Add your own logos and images as watermarks
• Image format conversion (JPEG, PNG, HEIC, WEBP)
• Image compression
• Automatic removal of Exif metadata
• Animated watermarks for videos
— New Features —
■ Watermark Studio (version 4.0.0)
Create original watermark images in the app.
Ideal for multi-line messages like "Do Not Repost" and "No AI Training."
Save and reuse your watermarks anytime.
■ Free Positioning Mode
Press and hold in Single Style mode to freely resize and reposition your watermark.
■ Special Fonts for AI Watermark Removal Resistance
Dot patterns and random rainbow colors help make AI detection more difficult.
— About Image Handling —
All processing is done entirely on your device.
Your content is never uploaded or shared.
more ・Optimized internal storage usage
・Improved processing performance
・Added the new "Beat" animation for video watermarks
This update fixes an issue where temporary files could accumulate and improves storage management.
5.0.0 3d ago
■ In version 4.2.0, the following improvements were made:
・Fixed a bug that caused crashes during video processing.
・Optimized internal code.
4.2.0 May 11
■ In version 4.1.1, we made the following improvements:
・Fixed a bug when saving templates in the studio feature
・Some UI has been translated into English
Since there are languages where localization has caused the UI to break, we have unified some of the UI in English.
I still feel a bit confused, but I think if the text in the UI changes frequently, users will not feel comfortable, so I will try not to make too many changes..。
● In the previous version 4.1.0, we allowed the creation and insertion of QR codes in the studio feature for creating watermarks.
Simple steps:
Studio tab → Select object layer → Long press → Tap to create QR code
4.1.1 Apr 16
In version 4.1.0, we added the ability to create and insert QR codes in the studio feature.
Simple steps:
Studio tab → Select object layer → Long press → Tap Create QR Code
In version 4.0.0, we made a major update.
• Added studio feature to create watermarks
• Added image saving formats (PNG, HEIC, WEBP)
• Improvements to some UI (such as numeric specifications)
With the studio feature, you can easily create watermarks for copyright display.
When applying, please load the watermark image from the image tab.
4.1.0 Apr 15
Version 4.0.2 fixes a bug where image encoding was executed twice during saving, which slowed down the process.
In the previous version 4.0.0, a major update was made.
- Added studio feature for creating watermarks
- Added image saving formats (PNG, HEIC, WEBP)
- Improvements to some UI elements (like numeric input)
With the studio feature, you can easily create a watermark for copyright notice. When applying, please load the watermark image from the image tab.
4.0.2 Apr 13
In version 4.0.1, some minor fixes were made, including localization support for some UI elements.
In the previous version 4.0.0, a major update was performed.
• Added studio feature for creating watermarks
• Added image saving formats (PNG, HEIC, WEBP)
• Improvements to some UI (such as numeric specification)
With the studio feature, you can easily create a watermark for copyright indication.
When applying, please load the watermark image from the image tab.
4.0.1 Apr 12
Version 4.0.0 has received a major update.
- Added studio feature to create watermarks
- Added image saving formats (PNG, HEIC, WEBP)
- Improved some UI (such as number specification)
With the studio feature, you can easily create watermarks for copyright display.
When applying, please load the watermark image from the images tab.
4.0.0 Apr 6
In version 3.0.6, we added the ability to select the font type for the AI removal countermeasure font.
You can change this in the Settings tab → General Settings → AI Removal Countermeasure Font Type.
The font types are as follows:
"codystar(default)", "raleway-dots", "doto-regular", "doto-bold", "rubik-pixels".
Basically, these are dot-type fonts, but I added "rubik-pixels", which has a design with digital noise, because I want to carefully test its effect.
If it seems effective, I might consider implementing a noise filter that could be applied to any font.
3.0.6 Feb 9
In version 3.0.1, minor bug fixes have been made.
In the previous version, 3.0.0, a major update was performed, adding the following features:
- Addition of watermark distribution feature
By performing email address verification, it becomes possible to upload and distribute watermark materials.
When a download occurs, advertisements can be displayed to the downloading user with links to the creator's profile, social media accounts, website, and skill selling platforms.
There is one ad impression per download.
3.0.1 Jan 25
We have made a major update to version 3.0.0.
・Added watermark distribution feature
By logging in, you will be able to publish and distribute the watermark you created yourself.
At the time of download, you can promote your profile, ad text, and the URL of your site or skill-selling platform to the downloading users.
1 download = 1 ad impression.
3.0.0 Jan 21
In version 2.8.1, the following improvements were made:
- Bug fix for the feature to freely place text watermarks
- Re-fix of the bug that caused video watermarks to darken when added
There were bugs in the features added last time, so we have made a quick fix.
2.8.1 Jan 9
In version 2.8.0, we implemented and improved the following additional features:
- The ability to freely place text watermarks
- Fixed a bug where the video watermark would become darker
In the previous update, we implemented a feature to convert images to GIF or MP4 as a countermeasure against AI learning. You can execute it by selecting the settings tab → common settings → changing the image conversion format to gif or mp4.
2.8.0 Jan 7
In version 2.7.0, we implemented the following additional features.
- Added the function to convert images to GIF and MP4
- Added a watermark resistant to AI image editing
- Added detailed information about fonts
As a countermeasure against AI image editing, we implemented the function to convert images to GIF and MP4.
The recommended maximum size for GIF is 2048*2048, and if it exceeds that size, it will be resized.
MP4 is handled similarly.
This can be executed by selecting the bottom settings tab → Common Config → changing the image conversion format to gif or mp4.
Additionally, we implemented a watermark that is difficult to remove even with AI image editing.
It can be used by selecting Single mode → selecting the Advanced tab → turning on the Clip and offset checkbox.
Also, by pressing the i icon on the font selection screen, you can open the detailed information page for each font.
The font zoom feature allows you to check fine details, and it also displays a link to the font download page.
If you have decided on your favorite font and want to use it in other tools, be sure to check it out.
2.7.0 2025-12-29
In version 2.6.2, the following improvements were made:
– Fixed a bug that changed the color tone of the video when adding a watermark
– Fixed a bug where the preview position shifted when freely placing an image watermark
2.6.2 2025-12-07
In version 2.6.1, we made the following minor improvements:
- Added video selection to the file deletion feature for files processed by the app
- Minor adjustments to the color selection dialog
In the previous version 2.6.0, we made the following major improvements:
- Increased font color variations
- Added free selection feature for font color using color codes
- Improved the switching speed of text watermarks
- Improved the switching speed of image watermarks
Now that you can freely choose font colors, you can use colors that comply with your brand color.
Please give it a try!
2.6.1 2025-12-04
In version 2.5.4, we fixed the following bug:
- Re-fixed the bug where the app wouldn't start on iOS26.
This was not fixed in the previous version 2.5.3.
I apologize.
There may be another occurrence of this.
2.5.4 2025-11-01
In version 2.5.3, the following fixes were made:
· Fixed a bug that prevented the app from launching on ios26
2.5.3 2025-10-30
In version 2.5.2, the following fixes were made:
- Fixed a bug that caused batch processing to fail when selecting image watermark.
2.5.2 2025-10-17
In version 2.5.1, improvements were mainly made around video processing.
• Added animation effects "Bounce" and "Bounce+Fade" for video watermarks.
• Added a preview screen for animation effects.
• Added a progress bar to display the progress during video processing.
• Fixed a bug that caused rotation during video processing.
• UI improvements.
2.5.1 2025-10-14
In version 2.5.0, the following major fixes were made:
- UI Organization
- Added animation effects "Move" and "Move + Fade" for video watermarks
- HDR video output support
- Lightweight due to library reduction
The processing speed for adding watermarks to videos has improved, so please give it a try.
More animations are planned to be added.
2.5.0 2025-10-07
In version 2.4.8, the following bug fixes were made:
• Fixed a bug where the original file from the time of capture was being loaded when selecting a photo.
We accidentally added a flag to specify the original version, causing edits in other editing apps to not be reflected. We apologize.
2.4.8 2025-10-03
In version 2.4.7, we made the following improvements:
• Fixed a bug that caused the conversion of video files (HDR) to fail
• Fixed a bug that prevented certain image and video files from loading
We have added the ability to downgrade HDR and HDR + Dolby Vision video files to SDR with a watermark.
The quality will decrease, but versatility will increase.
Our app automatically removes sensitive metadata like location information, so be sure to use it before posting on social media.
2.4.7 2025-09-30
In version 2.4.6, we made the following improvements:
- Fixed a bug that occasionally caused the app to freeze when selecting photos.
2.4.6 2025-09-17
In version 2.4.5, the following changes were made.
- The library has been updated.
- Minor corrections were made to the metadata.
2.4.5 2025-09-01
・Optimized internal storage usage
・Improved processing performance
・Added the new "Beat" animation for video watermarks
This update fixes an issue where temporary files could accumulate and improves storage management.
more Version 5.0.0 3d ago
Data Used to Track You The following data may be used to track you across apps and websites owned by other companies:
Data Not Linked to You The following data may be collected but it is not linked to your identity: