Runs entirely in your browser

Convert Files
in Seconds

Files never leave your device — nothing is uploaded, so there's nothing to delete. Pure local processing.

100% local Works offline Zero uploads

Drag & drop files here

or click to browse from your device

Capabilities

Supported Conversions

Images

PNG, JPG/JPEG, WEBP, BMP, GIF, ICO — convert freely between any of these, fully in-browser via Canvas.

PDF

PDF → PNG/JPG (each page), PDF → plain text, and JPG/PNG → PDF (combine multiple images into one PDF).

Documents

TXT, Markdown, CSV, JSON, HTML interconversion, plus DOCX → TXT/HTML text extraction.

Archives

Zip up multiple files into a single .zip, or unzip an existing archive back into its files.

Video and audio transcoding need heavy native codecs that don't run reliably in-browser yet, so they're not offered here rather than faked.

Why us

Why choose SwiftConvert?

Privacy First

Conversion happens entirely in your browser using JavaScript. Your files are never uploaded to any server.

Lightning Fast

No upload/download round-trip. Conversion starts the instant you drop a file.

Adjustable Quality

Set JPG/WEBP compression quality before converting images.

Pricing

Free, Forever

Because conversion runs on your own device rather than our servers, there are no per-conversion costs to pass on — so there's nothing to charge for.

Free

Unlimited, on your device

$0/mo

  • Unlimited conversions
  • No file-size cap beyond your device's memory
  • Works offline after first load
  • No account required
Help

Frequently Asked Questions

Are my files safe?

Yes — files are never uploaded anywhere. All conversion happens locally in your browser using JavaScript libraries loaded over HTTPS.

Is there a file size limit?

No hard limit is enforced; the practical ceiling is your device's available memory, since the whole file is processed in-browser.

Why no video/audio conversion?

Reliable video/audio transcoding needs heavy native codec libraries that are slow and unreliable purely in-browser, so it's left out rather than offered as something that doesn't really work.