Image, PDF, audio, video, and a full suite of AI-powered Pro tools — App Store screenshot designer, on-device transcription, document scanner, depth-aware portrait effects, and more. Lives in your menu bar, too, so colors and text are one keypress away. Everything runs on your Mac. No uploads. No accounts. No subscription.
Native SwiftUI. Retina-sharp. Here's a closer look at the tools people use most.
Six curated marketing templates — Hero, Split, Showcase, Headline Only, Stat Card, Full Bleed. Drop in raw captures, pick a device (Mac / iPhone 6.9″ / iPad 13″), choose a glass or flat frame treatment, and export perfectly-sized PNGs ready for App Store Connect. Localize every screen with Apple's on-device Translation framework — one click translates every slot into 23 languages and exports a ready-to-upload `en-US/`, `de-DE/` folder tree. Save your work as a `.knack` project and pick up where you left off next month.
Powered by Apple's Vision framework — the same model built into macOS. Cut out subjects in milliseconds, no cloud round-trip, no API key, no queue.
Pixel-accurate color sampler inside the app, plus a branded menu bar companion that lets you grab a color (⇧⌘P) or extract text from any region of any app (⇧⌘T) — without leaving what you're doing. Auto-copies to the clipboard in the format you want (HEX, RGB, HSL, SwiftUI, AppKit). Rolling history of 40 picks, synced between the sidebar and the menu bar's recent-colors list. A floating confirmation HUD tells you what landed in the clipboard.
Flip a single switch in Settings and Knack drops out of the Dock and Cmd+Tab. The menu bar companion stays — click the Knack mark any time to open the main window. Close the window and Knack keeps running in the menu bar, ready for the next color pick or screen OCR. Flip the switch back off and the Dock icon returns instantly. Perfect for a clean workspace without losing the tools.
Drop in hundreds of files and convert between PNG, JPEG, WebP, HEIC, TIFF, GIF, and BMP. Quality, resizing, and output folder — dialed in once, applied everywhere.
Drop in a 1024×1024 master. Get the full icon set for macOS, iOS, Android, and the web — named correctly, bundled neatly, ready to ship. Apple squircle mask applied automatically where it should be, left flat where iOS renders its own.
Ten free tools for everyone. Ten Pro tools powered by Apple's Vision, Core Image, Core ML, and the on-device Translation framework — all running on your Mac.
PNG, JPEG, WebP, HEIC, TIFF, GIF, BMP. Batch-friendly.
Lossless and smart-lossy via oxipng and pngquant.
Denoise & sharpen via Core Image.
Detect faces and refine each one.
Extract dominant colors. HEX, RGB, HSL.
Pixel-accurate sampler. Menu bar companion.
OCR via Apple Vision. Fully on-device.
URLs, Wi-Fi, contact cards. Any size.
MP4, MOV, MKV, WebM, GIF. H.264/H.265.
MP3, WAV, AAC, FLAC, OGG. Tags preserved.
Full sets for macOS, iOS, Android, web.
Merge, split, compress, rotate, extract.
Apple Vision subject detection, on-device.
2× / 4× upscaling with sharpening.
Auto-crop to any ratio via Vision saliency.
Auto-crop, deskew, and AI receipt extraction.
Core ML depth. Background blur & relight.
Bring black & white photos back to life.
Audio → text, SRT, VTT. Whisper on-device.
App Store marketing shots. 23 languages.
Free tools are free forever. Knack Pro is a one-time purchase — no subscription, ever.
All 10 utility tools, unlimited use.
One-time purchase. Yours forever.
New Pro tools and upgrades ship regularly. Buy once — every future addition is included at no extra cost.
No Electron. No web views. Starts instantly, feels native.
Every tool runs on your Mac. Your files never leave the device.
Colors and text from anywhere on screen. Optional Dock-free mode.
Free stays free. Pro is one-time $4.99, yours forever.