simple-screen-capture

Screenshot, GIF, and screencast capture for Ubuntu/PopOS (X11) with a floating GTK menu.

Install

bash <(curl -fsSL https://github.com/KerryRitter/simple-screen-capture/releases/latest/download/install.sh)

Press Ctrl+Shift+Alt+4 to open the capture panel.

Features

• Screenshot — select any area, copied to clipboard as Image, Base64, or URL; saved to ~/Pictures/Screenshots
• Record GIF — select any area, records and converts to an optimised GIF
• Record Screen — select any area, records as MP4 (with optional audio)
• URL mode — auto-uploads the capture to your S3 / R2 / B2 / MinIO bucket and copies a shareable URL to the clipboard (screenshots, GIFs, and screencasts). Configure once via simple-screen-capture --setup; tiny stdlib-only SigV4 uploader, no awscli dependency.
• Smart Slice — automatically extracts key screenshots from a recording when notable screen changes are detected (tunable sensitivity slider)
• Persistent resizable region selector — the capture area is always visible before you commit
• Per-mode region memory — each mode remembers its last capture area

S3 / R2 upload config

Running simple-screen-capture --setup walks you through the upload config (endpoint, bucket, credentials, optional CDN base, etc.) and writes ~/.config/capture/s3.conf (chmod 600). Works with:

• AWS S3 — set S3_ACL=public-read if you want anonymous reads
• Cloudflare R2 — leave ACL blank; serve via custom domain bound in the R2 dashboard (set S3_PUBLIC_URL_BASE)
• Backblaze B2 / MinIO / any other S3-compatible host

Team sharing (passphrase-encrypted config)

If your team uses a shared R2 bucket, the owner can export an encrypted blob that teammates decrypt at install time.

Owner (one time, after running --setup normally):

simple-screen-capture --export-config
# prompts for a passphrase (≥12 chars, twice), then prints a single-line
# ciphertext blob starting with U2FsdGVkX1… — copy that string.

AES-256-CBC with PBKDF2 (600k iterations). Share the ciphertext + passphrase with your team via a password manager.

Teammate (one-liner — paste the ciphertext inline):

CAPTURE_CONFIG='U2FsdGVkX1...your-ciphertext-here...' \
  bash <(curl -fsSL https://github.com/KerryRitter/simple-screen-capture/releases/latest/download/install.sh)

Or if you'd rather host the blob at a URL, pass that URL as CAPTURE_CONFIG instead — the installer detects http(s):// and fetches it. Either way, the teammate gets prompted for the passphrase during install.

Security reality check: after decryption, every teammate has full R2 credentials locally — they can read, overwrite, or delete anything in the bucket. Rotate the R2 token + re-export whenever someone leaves. For stricter isolation, issue per-user R2 tokens scoped to a path prefix and have each teammate run --setup normally instead.

Build from source

bash build.sh 1.7.0
sudo apt install ./simple-screen-capture_1.7.0_all.deb
simple-screen-capture --setup