The "AI" in "AI Viewer" does not refer to artificial intelligence — it stands for the Adobe Illustrator file format (.ai). This app has no AI features; it's a viewer for opening professional design and document files directly on your device.
thefrog AI Viewer opens Adobe Illustrator (.ai), PDF, and SVG vector files, plus common image files (JPG, PNG, WEBP, GIF, BMP, HEIC, AVIF). EPS files can be viewed using their embedded preview image.
■ Key features
• Pinch to zoom in for a closer look, or zoom out to see the whole artwork
• Page navigation for multi-page AI (PDF Compatible) and PDF files
• Swipe to the next page or file (Plus: see a preview of it while you drag)
• GIF and WEBP animation playback
• "Recent" tab — view and individually delete recently opened files
• "Folder" tab — opens the system file picker so you can find and open a file from any location
• Open directly from other apps (KakaoTalk, email, browser, etc.) via "Open with" or Share — files opened this way also appear in the "Received" tab (this does not automatically collect every download on your device)
• Share the original file you're viewing
• Save or share the current page as a PNG image (Plus)
• Replace a color everywhere (Plus): tap a color and pick a new one to change similar pixels; save or share as PNG
• Save as PDF (Plus): save AI (PDF Compatible), SVG, and image files as PDF — SVG stays vector, AI is saved as-is (animated images: first frame only)
• Open ZIP files directly (Plus): pick and view the AI, EPS, PDF, SVG, and image files inside without extracting (password-protected ZIPs supported, except AES)
• Plus Designer Tools: markup (pen, highlighter, shapes, text, eraser — move, resize, and recolor shapes and text), color picker (HEX/RGB), and high-resolution PNG export
• App language: choose from 13 languages in the menu, or follow your device
• PDF layers: see the layer list and tap the artwork to find its layer (free); show/hide layers, change layer colors and save as PNG (Plus)
• Replace color and layer color panels: collapse, set to half height, or drag from anywhere; the artwork fits above
• PSD files open in thefrog PSD Viewer, Procreate (.procreate) files in thefrog Brush Viewer
■ About supported formats
AI files are supported only when saved from Adobe Illustrator with "Create PDF Compatible File" enabled. Legacy AI files saved without this option may not open.
EPS files are shown using their embedded preview image, so they may look less sharp than the original when zoomed in, and EPS files without a preview image can't be opened.
■ How it works
PDF, SVG, and image files are always free to view, with no limits and no purchase required (except files inside ZIP archives). AI and EPS files can be viewed free for up to 5 different files in total. Markup can be tried without purchase: 3 times free (counted when you start drawing). "Plus" (a one-time purchase, lifetime access, not a subscription) unlocks unlimited AI and EPS viewing, unlimited markup, saving or sharing the current page as PNG, replacing a color everywhere, showing/hiding PDF layers, changing layer colors and saving a layer as PNG, swipe previews, Save as PDF, Designer Tools, and opening files inside ZIP archives.
■ Privacy
The content of files you open is processed entirely on your device and is not transmitted to a server. Works fully offline — no internet connection required. No account or sign-in is required, and there are no ads.
thefrog AI Viewer is an independent viewer, not an official Adobe app. Adobe and Illustrator are trademarks of Adobe Inc.
A file viewer app made by thefrog.