AI File Viewer: Illustrator

The "AI" in "AI Viewer" stands for the Adobe Illustrator file format (.ai), not artificial intelligence. This app has no AI features; it is a viewer for design and document files 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 detail or 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 recently opened files; long-press to select several and remove them from the list, with Undo

• "Folder" tab — open a file from any location with the system file picker

• Open directly from other apps (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

• Export (Plus): save or share the current page as PNG, JPG, WEBP or PDF at the size you choose

• Replace a color everywhere (Plus): tap a color and pick a new one to change similar pixels; export the result as PNG, JPG, WEBP or PDF

• 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; pin notes with adjustable width; pinch to view smaller than fit), color picker (HEX/RGB), and high-resolution export

• App language: choose from 13 languages in the menu, or follow your device

• PDF layers: nested groups appear as a tree you can expand and collapse; see the layer list and tap the artwork to find its layer (free); show/hide layers, change layer colors and export a layer (Plus)

• Fonts used: see which fonts a PDF or AI (PDF Compatible) file uses, whether each is embedded, and copy their names (3 free tries, then Plus)

• Replace color and layer color panels: collapse, set to half height, or drag from anywhere; the artwork fits above — on landscape screens and tablets the panels open beside the artwork instead of covering it

• PSD files open in thefrog PSD Viewer, .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 via their embedded preview image (less sharp when zoomed in); 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). Fonts used can be tried 3 times free. "Plus" (a one-time purchase, lifetime access, not a subscription) unlocks unlimited AI and EPS viewing, unlimited markup, viewing fonts used after the 3 free tries, exporting the current page as PNG, JPG, WEBP or PDF, replacing a color everywhere, showing/hiding PDF layers, changing layer colors and exporting a layer, swipe previews, Save as PDF, Designer Tools, and opening files inside ZIP archives.

■ Privacy

Files you open are processed entirely on your device and never sent to a server. Works fully offline. No account, no sign-in, 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.