📖 How to use
- Choose the required file or files.
- Select the output format or available options.
- Start processing and keep this tab open.
- Download or review the generated result.
Home › Image Tools › File Thumbnail Generator
File Thumbnail Generator
Generate PNG thumbnail previews for images, PDFs, videos, audio waveforms and common Office documents.
◉ Free⚡ Server Processing🔒 Temporary Files Deleted
🖼️ Upload & Process
Images use Pillow, PDFs use MuPDF, videos use FFmpeg frame capture, audio files use waveform rendering, and Office files use LibreOffice plus PDF preview rendering.
Preparing…
Private processingFiles are used for the job and removed after delivery.
Real enginesUses LibreOffice, FFmpeg, Pillow, MuPDF and archive engines where appropriate.
Free accessNo conversion feature paywall on Tool Digital Hub.
⚡ Phase 4 engine
- Uses one shared backend for many file formats.
- Includes progress, cancellation and fallback API endpoint handling.
- Current free server limit is 15 MB per file.
- Render may need a short wake-up after inactivity.
💡 Pro Tips
- For batch jobs, use files of compatible types.
- Keep your original file until you verify the output.
- Large media conversions can take longer on the free server.
- Use dedicated PDF tools when you need page-specific controls.
❓ Frequently Asked Questions
What files can generate thumbnails?
Common images, PDFs, video and audio files, plus Word/Excel/PowerPoint/OpenDocument formats supported by the server.
What format is the thumbnail?
PNG, with the selected canvas size.