Local processing
Conversion runs in your browser using canvas and WebAssembly.
Private browser-based conversion
Convert files locally. Keep them private.
Create WebP, WebM, PDFs, page images, and presentation PDFs directly in your browser — no uploads, no accounts, no server storage.
No uploads
No account
Runs in your browser
Batch downloads
Input files
PNGlocal
PDFlocal
PPTXlocal
MP4local
Optimized output
Local engineready
WebP
WebM
PDF
ZIP
Smaller · local
Local converter workspace
Converter
Drop files, choose quality, and convert locally on your device.
Supported formats
Images: PNG, JPG, JPEG
Videos: MP4, MOV, AVI, MKV, M4V
PDF: PNG/JPEG to PDF, PDF to PNG/JPEG, merge PDFs
Presentations: PPTX to PDF
Image formats: JPG to PNG, PNG to JPEG
HEIC: HEIC/HEIF to PNG or JPEG
Office: DOCX to XLSX, XLS/XLSX to DOCX, Word/Excel to PDF
Drop PNG or JPG files for WebP conversion
PNG, JPG, and JPEG files stay on your device.
File queue
0Your selected files will appear here.
Privacy-first by design
Your files stay on your device. Wendarca processes conversions inside your browser using client-side technologies such as canvas, WebAssembly, and local file APIs.
No account needed
Open the app and convert files without sign-up, tracking workflows, or cloud storage.
No cloud storage
Wendarca does not store your files, converted outputs, or conversion history.
Batch-friendly workflow
Convert multiple files and download outputs one by one or as a ZIP.
How it works
01
Drop your files
Add one file or a full batch of supported images, PDFs, presentations, and videos.
02
Choose output
Pick WebP, WebM, PDF creation, PPTX conversion, page rendering, or PDF merge.
03
Convert and download
Download individual results, merged documents, or ZIP packages.
Capabilities
One workspace for everyday conversion tasks.
Dedicated tools keep each workflow focused while batch downloads keep larger jobs tidy.
Images
PNG, JPG, and JPEG to optimized WebP, PNG, JPEG, or PDF.
PNG · JPG · JPEG -> WebP · PNG · JPEG · PDF
Videos
Common video formats to web-friendly WebM.
MP4 · MOV · AVI · MKV · M4V -> WebM
PDFs
Create PDFs, render pages, and merge compressed documents.
PDF · PNG · JPEG
Presentations
Convert PPTX files to PDF with a local LibreOffice WebAssembly engine.
PPTX -> PDF
HEIC photos
Convert HEIC and HEIF photos to PNG or JPEG.
HEIC · HEIF -> PNG · JPEG
Word and Excel
Convert structured Word tables/text to XLSX, spreadsheet rows to DOCX, or Office files to PDF.
DOCX · XLSX · XLS -> PDF · DOCX · XLSX
Batch downloads
Download individual files, merged outputs, or ZIP archives.
PDF · WebP · WebM · ZIP
Open-source friendly
Built for fast, private file workflows.
Wendarca is designed as a transparent local-first utility: no accounts, no upload pipeline, no database. The interface stays focused on helping people prepare files quickly and privately.
FAQ
No. Conversion happens locally in your browser.
Video conversion is heavier than image conversion and depends on your device performance.
Yes. You can convert multiple images and videos and download them individually or as ZIP.
PNG/JPG/JPEG to WebP or PDF, PDF to PNG/JPEG, PPTX to PDF, PDF merge, and common video formats like MP4/MOV/MKV/AVI/M4V to WebM.
No. Wendarca has no account system, database, or server-side file storage for your conversions.