Skip to tool
All tools
FeuTex · free tools runs in-browser no bloat built by LiMiT

Online Converter — Convert Image, Video, Audio & Document Files

This converter runs in your browser (no uploads). It’s best for quick, local conversions: images to PNG/JPG/WebP, audio to WAV, video to WebM (by recording playback), and text document transforms like JSON/CSV/Base64.

Category: Data · URL: /tools/online-converter-convert-image-video-audio-document-files.html
Tip: for video → WebM, smaller clips convert faster. This tool never uploads your files.
No output yet.
Related: Online Converter (Base64/URL/HTML/JSON/Case/Slugs) Related: XML Formatter Online Related: Meta Checker Tool
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Pick a file, choose what you want to convert to, then download the result.

  1. Select one or more files.
  2. Choose a mode (Auto, Image, Audio, Video, Document).
  3. Pick a target format/action and click Convert.
  4. Download the converted file(s) from the results list.

Note: Video conversion requires browser support for MediaRecorder and will “re-encode” by recording playback (keep this tab open).

Keywords this page targets (natural cluster): online file converter, convert image to png, convert image to jpg, convert image to webp, png to jpg converter, jpg to webp converter, audio to wav converter, mp3 to wav in browser, video to webm converter, mp4 to webm in browser, convert json pretty print, minify json online, csv to json converter, json to csv converter, text to base64 converter, base64 to text decoder, offline file converter, client side file converter, convert files without uploading, bulk file converter in browser, convert document text formats, image converter without watermark
Secondary intents covered: Convert an image file to a smaller/lighter format for web use, Turn an audio file into WAV for editing or import, Convert a video to WebM for web playback, Transform JSON between pretty and minified forms, Convert CSV to JSON (and JSON back to CSV) for data work, Encode/decode Base64 for sharing or embedding, Process multiple files in one run without uploading, Download converted outputs immediately with correct extensions

FAQ

Does this tool upload my files?

No. Conversions run locally in your browser; files are not sent to a server.

What image formats can I convert to?

PNG, JPG, and WebP. Source images must be decodable by your browser.

Can it convert MP3 to WAV?

Yes, if your browser can decode the MP3. Output is uncompressed WAV.

How does video conversion work here?

It records video playback into WebM using MediaRecorder. It’s not a full professional transcoder and can be slower for long clips.

Why did my video conversion fail?

Your browser may not support captureStream/MediaRecorder for the file, or the clip is too large. Try a shorter clip or a different browser.

Which “document” formats are supported?

Text-based files like JSON, CSV, TXT, MD, XML, and HTML (as plain text). Binary formats like DOCX/PDF aren’t converted here.

Can I convert multiple files at once?

Yes. Select multiple files and the tool will process them sequentially and provide download links.