GhostConvert Complete Guide: Secure, Local, All‑in‑One File Conversion

📌 What is GhostConvert?

GhostConvert is a free file converter that runs 100% inside your browser. Unlike traditional online converters, your files never leave your device – no uploads, no servers, no data leaks. All image, document, PDF, and audio conversions happen locally on your CPU and memory, offering true “zero‑upload, zero‑tracking” privacy.

🔒 Why Local Conversion Is Safer

Typical conversion services force you to upload sensitive files to third‑party clouds, risking exposure of personal photos, confidential documents, or business data. GhostConvert uses modern WebAssembly, Canvas, and browser APIs to process everything on your own machine:

✅ Files uploaded to a server? Never – zero server interaction, zero privacy worries.
✅ Logs or analytics on your data? Never – no backend, no tracking.
✅ Registration or login required? Never – anonymous and ready to use instantly.

📂 Supported File Formats

▶ Input (convert to image / PDF / MP3)

Images: JPG, PNG, WebP, GIF, BMP, AVIF, SVG, TIFF, HEIC
Documents: DOCX, XLSX, PPTX, CSV, TXT, ODT, ODS, EPUB, HTML
PDF: extract each page as an image or merge multiple documents
Audio / Video: MP3, WAV, OGG, FLAC, M4A, AAC, WMA, MP4, MOV, MKV, AVI, 3GP, and more (audio converts to MP3/WAV; video extracts audio track)

▶ Output Formats

Images: JPG (standard), PNG (best quality), WebP (small size)
Document processing: combine any supported input into a single PDF, or render document pages as images/PDF
Audio: MP3 (broad compatibility), WAV (lossless)

💡 Special image formats like HEIC, TIFF, and SVG are automatically converted to regular bitmaps. For WPS, ET, or DPS files, please save them as Office Open formats first (e.g., .docx, .xlsx, .pptx).

🚀 How to Use GhostConvert – Step by Step

Choose your output format: Click the button for JPG, PNG, WebP, PDF, or MP3 to tell GhostConvert what kind of result you need.
Add files: Drag & drop files or a folder onto the dashed area, or click it to browse (batch allowed, up to 200 files at once).
Start conversion: Hit the big “⚡ Drop files to convert” button. Progress is shown in real time; large jobs will trigger memory warnings.
Download results: When done, the button changes to “✓ Done! Click to download”.
- Single file → saved directly.
- Multiple files → automatically zipped into a bundle (filenames keep original prefixes).

⚡ Advanced Tips & Tricks

Merge multiple files into one PDF: Select “PDF” output, then upload several images, documents, or PDFs. GhostConvert combines them into a single PDF, preserving layout where possible.
Extract audio from video: Switch to “MP3/WAV (Audio)” output, then drop any video file (MP4, MOV, MKV, etc.). GhostConvert will extract the audio track and convert it to MP3.
Convert TIFF / HEIC effortlessly: No extra software needed. Drag them in, choose JPG/PNG/WebP, and each page of a multi‑page TIFF becomes a separate file.
Handle very large files safely: If total size exceeds 500 MB or 1 GB, a warning appears. Consider splitting the batch or converting fewer files to avoid browser memory issues.
Batch convert documents to images: Pick JPG/PNG/WebP output, drag in DOCX / XLSX / PPTX files. Every page of each document is rendered as an individual image.

❓ Frequently Asked Questions

Does GhostConvert secretly upload my files?

Absolutely not. All conversion code runs locally in your browser. You can open Developer Tools → Network tab and confirm that no file data is ever sent to any server.

Why is conversion sometimes slow?

Because everything uses your own device’s CPU. Operations like PDF rendering, HEIC decoding, and MP3 encoding can be demanding on older hardware – but that’s the price of true privacy.

What’s the maximum number of files per batch?

Up to 200 files at once. If a folder contains more than 200 files, please split them into smaller batches.

Why doesn’t it support .ppt or .wps files?

Those legacy binary formats lack reliable browser‑side parsing libraries. Please convert them to .pptx or .docx using Microsoft Office, LibreOffice, or Google Docs before uploading.

Can I use GhostConvert on my phone?

Yes, modern mobile browsers (Chrome, Safari, Edge) are supported. However, large files may be limited by phone RAM – a desktop/laptop is recommended for heavy workloads.

Conversion fails or the button stays on “Loading components…”. What to do?

Check your internet connection – GhostConvert loads libraries from CDNs (cdnjs, jsdelivr). If the problem persists, try refreshing the page or switching to a different network.

📖 Still have questions?

Browse other articles in this Wiki or reach out to us at support@ghostconvert.cc.

Thank you for choosing GhostConvert – powerful, private file conversion for everyone.