Free
$0
- Images up to 10 MB
- Videos up to 100 MB
- 2.5 GB of storage
lacuna right now
- 116.8 MB stored
- 5 users
- 10 files uploaded
From screen to link in three steps.
Capture
A region, a window or the whole screen — with one key.
Edit
Arrows, captions, blur and crop. For video — trimming and compression.
Share
The link is already on your clipboard. You decide who opens it.
The Windows app
Beta. Screenshots, recording, replay, editors and lesson mode — in one window.
Windows · soon
Replay
Already mid-game or mid-call? Press the shortcut to keep the last minutes, even if you weren’t recording. The buffer holds up to 15 minutes.
Ctrl+Alt+RLesson mode
Draw right on top of your screen: pen, marker, arrows, numbered steps, laser and spotlight. While recording, your marks go into the video.
Everything in one window.
The main things the Windows app does. Keys are the defaults; change any of them in settings.
What you see What the recording sees Windows 10 version 2004 or later.
Replay
Already mid-game or mid-call? Keep the last minutes with one key. The buffer holds up to 15 minutes.
Ctrl+Alt+RText from screen
Select an area and its text lands on your clipboard. Recognition runs on your computer.
Ctrl+Alt+TCompression
Fit a video for a chat or an email. Compare before and after — the original stays where it is.
58.6 → 7.4 MB−87%
Password and expiry links
A password, an expiry from a day to a month or none, a link for one visit.
Lesson mode
Draw over the screen: pen, arrows, step numbers. While recording, the marks go into the video.
Ctrl+Alt+DAnd more
- Instant link · Ctrl+Alt+PrtSc
- Recording up to 4K at 120 fps
- No watermark
- Layered photo editor
- Video editor
- GIF and WebP
- Import from Imgur
- API
All from the keyboard.
The default keys don’t clash with Lightshot, browsers or PowerToys.
Change any shortcut in the app’s settings.
Who lacuna is for.
The match is on — keep the last minutes with one key.
Replay works on any graphics card, with a buffer of up to 15 minutes. Recording up to 4K at 120 fps, without a watermark or a length limit.
Keep personal things personal.
A new file opens only with its link and stays out of the feed. For each file, you choose who sees it and for how long.
- Link only
New files open for people with the link. In settings you can make them private by default.
- Password and expiry
Protect a link with a password and set when it stops working.
- One-time links
Opens in one browser for 10 minutes, then access closes.
- Encrypted storage
Files are stored encrypted on the server. This is encryption at rest, not end-to-end.
quiet-morning.png2.8 MB · image
lac.pics/s/f3Kq9Lm2Xw7Rt5Vb8Nc1Hd6ZOnly people with the link can open it.
lacuna and the others.
Only what you can check on the makers’ own pages.
| Feature | lacuna | Lightshot | Snagit | NVIDIA App |
|---|---|---|---|---|
| Price | yesFree · Pro $1.79 per month | yesfree | partlypartlysubscription, from $39 a year | yesfree, needs a GeForce RTX |
| Links with a password, expiry, one visit | yesall three | nouploads are open to anyone with the link | partlypartlypassword | no |
| Replay: keep the last minutes | yesup to 15 min, any graphics card | nono video | no | yeson GeForce |
| Draw over the screen while recording | yeslesson mode | no | partlypartlyarrow, box, steps; fade after 3 s | no |
| Hide chosen windows from recordings and screenshots | yesWindows 10 2004+ | no | noonly its own interface | no |
| Text from screen | yeson your computer | no | partlypartlyno Russian in the language list | no |
| Own storage for links | yesown server, files encrypted | partlypartlyyes, but everything is public | yesScreencast | nofiles stay on disk |
When to pick another app
- Lightshot
- You only need an area screenshot with a short link and no sign-up, and public links are fine.
- Snagit
- You write guides: step capture exported to PowerPoint and Word, Camtasia integration, a Mac version.
- NVIDIA App
- You have a GeForce RTX and only need game capture: free, up to 240 fps on RTX 40 and 50, AV1, auto clips.
Start for free.
Go Pro when you need more room.
Pro
$1.79per month
- No limit for one file
- 10 GB of storage
Payment is temporarily unavailable.
All plan detailsWhat’s new.
All changesPhoto is faster on large documents
A brush under many styles, blur and sharpen, the wand and healing after long work, repeated undo and wheel zoom no longer stall. History keeps changes as tiles and no longer eats memory.
Photo without the PC load, the pen and gradients as in Photoshop
Brushes, the eraser, the airbrush and smudge no longer load the computer: moving the mouse no longer rebuilds the document, and a stroke draws only its new dabs. The pen and gradients work as in Photoshop, PDF and AI open and drop, and an uploaded code folder has its own link card.
No white window when Win + Shift + S starts lacuna
When lacuna is closed and Win + Shift + S starts it, the main window can no longer flash on screen: until it is first shown it waits beyond the screen edge and takes its place in the center only when you open it. The start journal now records any stray window if one still appears.
PDF and AI in Photo, a magic wand that no longer crashes
Smart objects from PDF and Illustrator are redrawn from the file and stay sharp at any zoom; PDF and AI can be placed into a document from the page of your choice. The crash of the Magic Wand and other tools at some window widths is fixed, and tool options now fold into «…» one by one.
Questions
Didn’t find an answer? Support
Do I need an email?
No. When you sign up, lacuna gives you a secret key — that’s how you sign in. Keep it in a password manager: there’s no email recovery.
Can I use it now?
Yes, but new accounts need an invitation from the administrator or a lacuna user. If you already have an account, just sign in.
How is lacuna different from Lightshot?
Lightshot takes screenshots and posts them at an open link. lacuna also has screen recording, replay, lesson mode and window privacy, and a link can have a password, an expiry or a single visit. Point-by-point comparison
Is the Windows app ready?
Almost. The beta works — screenshots, recording, replay, editors and lesson mode, but there’s no public installer link yet: it will appear on this page. The web version works without installing anything.
Do I need an account for the app?
Yes, a lacuna account: the app works once you sign in. Your files can stay on your computer only — they reach the site only if you turn uploading on.
Windows says “Unknown publisher” — what do I do?
The installer is not digitally signed yet, so SmartScreen does not know it: it is a warning, not an antivirus finding. Click “More info” → “Run anyway”.
What computer do I need?
Windows 10 or 11, 64-bit. Windows 11 and an updated Windows 10 already have WebView2; otherwise the installer adds it. Window privacy works from Windows 10 version 2004.
Will replay slow my game down?
Replay records with the NVIDIA, AMD or Intel graphics encoder when there is one — at 60 frames per second. Without it — at 30, leaving the processor to the game. You choose the buffer length, up to 15 minutes, and where it lives: memory or disk.
Who can see my files?
New files open with their link and stay out of the feed: whoever you give the link to can see them. You can change the access of each file — only you, with the link or public — and protect a link with a password, an expiry or a single visit. In settings you can make new files private.
Are files encrypted on the server?
Yes, files are stored encrypted. This is encryption at rest, not end-to-end: the server decrypts a file when someone you gave access to opens it.
How long are files kept?
With no expiry and no ads, until you delete them. You can download all your files as one archive and delete your account.
How much does it cost?
Free: 2.5 GB of storage, images up to 10 MB, videos up to 100 MB. Pro — $1.79 per month: 10 GB of storage, no limit for one file.
How do I pay and get a refund?
Payment is temporarily unavailable. Refund rules