App: Overlay Lite
Developer: Jiulong Zhao
Genres: Grafik und Design, Foto und Video

This is the free version of our Overlay. Free is free, there is neither in-app purchase nor subscriptions. You can benefit from all features of the Overlay. Compare with the professional version, there is only ONE difference: The overlay picture you are using will be blended with a watermark of the app name and version. We hope you like the idea of the app and make your job done with ease.
A frame that allows you to have an image or even PDF displayed semi-transparently in front of everything and click through. It enables you to easily copy, trace, or compare designs, images, and documents since you can lock the frame and make it undisturbed by mouse gestures.
It’s a transparent overlay of an image or document on your screen that you can click through - like a transparent sticker on your screen.
Overlay Lite is especially useful for artists, designers, and students as it allows you to make your art or design from or reference photos and screenshots.

features v2.00 -> v2.30 -> v3.25
see readme for detail due to the 4K words limit

v3.25 -> v3.30
- button size and style modified
- "see through" function added according to the user's feature request
- fix the version displaying the bug on the support email subject
- tip window and tip contents modified
- icon color changed

v3.30 -> v3.32
- status bar menu added
- startup tip modified
- menu re-arranged for simplification
- more by dragonBTV simplified
- app size dramatically reduced
- performance improvements for macOS 10.13 High Sierra

v3.32 -> v3.40
- options add according to feature requests: select overlay image from the Open menu
- options add according to feature requests: overlay image can be simply switched from the Open Recent menu
- Tips for​ v3.40 added to explain Open / Open Recent options

v3.40 -> v3.42
- bug fixed for macOS Mojave, red lock ring and green unlock ring can be correctly displayed
- status menu bar icon auto-switched for the dark mode of macOS Mojave
- performance improvements for macOS 10.14 Mojave

v3.42 -> v3.45
- bug fixed for macOS Mojave, all alert dialog box color under dark mode
- bug fixed: About Overlay font color under the dark mode of macOS Mojave, 
- bug fixed: More Apps by dragonBTV link works under macOS Mojave 10.14​

v3.45 -> v3.46
see readme for detail

v3.46 -> v3.52
a newer version of macOS Mojave 10.14.5
- bug fixed: overlay image can be freely moved via scrollbar
- new option added: the overlay window can be fixed to one of your Desktops only
- the background color of tip windows modified

v3.52 -> v3.53 -> v3.60 -> v3.70 -> v3.80 -> v3.82
see readme for detail

v3.82 -> v4.01
Feature added according to user's feature request:
- Fully customizable Global HotKey toggled the hidden title bar
- overlay window can be moved via direct mouse dragging when in unlock mode
- overlay window will NOT be dragged moving when in rotate mode
- default color of the borderline in unlock mode changed to blue
- Toggle Hide / Unhide function added to all Menu
- Toggle Lock / Unlock Overlay added to all Menu
- Open Settings on Status Bar added to the main menu and dock menu
- bug fixed on saving the selection of Over Fullscreen mode
- what is Fullscreen & Over Fullscreen tip added
- Show Tips of v4.01 menu added
- More by dragonBTV menu updated

v4.01 -> v4.03
- new option added according to user's feature requests
- option: Actual Size in the retina (1/2) added to the setting
- option: mouse right-click menu added: paste and zoom

v4.03 -> v4.10
- option: last working status can be saved and fully reloaded
- quitting alert modified to handle last job saving
- 'Force Loading Last Saved Job' added to the File menu
- Preferences menu renamed to Settings
- bug fixed, all tips can be opened correctly from the Support menu

v4.10 -> v4.11
- watermark added to overlay image
- free version disclaimer added
- link to download Overlay added to Support menu
- status menu bar icon matches not only macOS dark mode but also the wallpaper light/dark setting

Release notes:
v4.25 -> v4.27
- feature added according to user's requests: zooming factor in exact user input