Local File Converter Chrome Extension: Images, Audio, Documents — No Upload
Most online converters take your file, send it to a server, process it there, and return a result. Your photo, document, or spreadsheet lives briefly on someone else's infrastructure. ConvertForge converts files entirely inside your browser — nothing leaves your machine.
What ConvertForge Converts
ConvertForge is a universal conversion router with a drag-and-drop interface. Drop a file, and it detects the type and routes it to the right converter automatically.
HEIC and more
Convert iPhone HEIC photos and other image formats without uploading to a cloud service. Fast, local, batch-ready.
Video → Audio
Extract audio from video files or convert between audio formats. All processing happens locally in the browser.
OCR (local)
Extract text from PDFs and images using Tesseract OCR — running entirely on-device. No document ever reaches a remote server.
JSON / CSV / YAML / XLSX
Convert between structured data formats for data pipelines, spreadsheet imports, or API response processing.
How to Convert a File Locally
Install ConvertForge
Visit the ConvertForge page and add it to Chrome. No account, no sign-up — it installs in a few seconds.
Open ConvertForge
Click the ConvertForge icon in your Chrome toolbar. It opens as a local panel — nothing is connected to any external server.
Drop your file
Drag your file onto the universal router. ConvertForge detects the file type and shows the available output formats for that file.
Select output format and convert
Pick the target format. Conversion runs locally using browser-native APIs — Tesseract for OCR, WebAssembly for audio and image processing.
Save the converted file
The converted file downloads directly to your device. No temporary server copy, no retention window to outlast.
Local vs. Cloud: What Changes
| Feature | Cloud converter | ConvertForge (local) |
|---|---|---|
| File leaves your machine | Yes | No |
| Works offline | No | Yes |
| File size limits | Often (10–25 MB) | None (RAM-bound) |
| Account required | Usually | No |
| Works from browser | Yes | Yes |
If you handle photos with EXIF location data, documents with personal information, or proprietary data files, the difference between cloud and local processing is not just convenience — it's a privacy boundary. ConvertForge keeps that boundary intact.
Convert files locally. Keep your data yours.
ConvertForge is a Chrome extension that handles images, audio, documents, and data formats — entirely in your browser, no upload required.
Get ConvertForge →Frequently Asked Questions
No. ConvertForge runs entirely in your browser. Files are processed locally using browser APIs and WebAssembly — nothing is uploaded to Wendygo Studio's servers or any third party.
ConvertForge handles four categories: images (including HEIC from iPhones), audio files, documents (with local OCR powered by Tesseract), and data formats (JSON, CSV, YAML, XLSX).
Yes. Because all processing is local, ConvertForge works fully offline once installed. You can convert files on a plane, in a location with no Wi-Fi, or on a machine with restricted network access.
ConvertForge has a free tier with no account required. Visit the ConvertForge page for current pricing and plan details.
Online converters upload your file to a remote server, process it there, and return the result. ConvertForge does all of this in your own browser — your file never leaves your machine, which matters for private photos, confidential documents, or proprietary data.