No server uploads 36+ Tools Free & Open Source Works Locally

Your private toolkit for files & code.

36 tools for PDFs, images, and developer workflows — all running in your browser. No uploads, no accounts, free forever.

200+ Format Conversions

Input format
Select a format
Click a format on the left to explore.
GPU Accelerated — this conversion path uses hardware acceleration
Hardware Accelerated

GPU-powered video conversion

Conversions marked with ⚡ use your device's graphics hardware. Faster conversions, lower CPU usage — still 100% local.

Full GPU — any direction
MP4 WebM MOV M4V 3GP
GPU when converting to formats above
MKVAVIFLVTSWMVOGGOGV
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100% Private by Design

  • Your files never leave your device
  • All 36 tools run entirely in your browser — zero server uploads
  • Open source — verify it yourself

Frequently Asked Questions

Is LocalConvert really free?

Yes — completely free, no account required, no hidden fees. LocalConvert is open source under the AGPL-3.0 license.

Are my files private?

Completely. All processing runs in your browser using WebAssembly. Your files never touch our servers — not even for a moment.

What can LocalConvert do?

Convert 200+ file formats (images, audio, video, documents), 18 PDF tools (merge, split, compress, watermark, sign, edit, and more), 10 image tools (crop, resize, filters, blur, watermark), and 8 developer tools (JSON, hash, Base64, diff, markdown).

Is there a file size limit?

No hard limit — it depends on your device's available memory. For very large video files, Firefox or Safari typically handle them better.

Do I need to install anything?

No installation needed. LocalConvert works directly in any modern browser. You can also install it as a PWA from the address bar for an app-like experience.