Convert pictures and sound.
Change formats, resize, compress, and re-encode — all locally, as many files as you like.
CONVERT ON YOUR DEVICE
Files in. Files out.
Convert images, audio, units, text, and colors right in your browser. Nothing ever leaves your device.
Free forever. No signup. No watermark. Files never leave your device.
Image converter
PNG, JPEG, WebP, GIF, and BMP in — PNG, JPEG, or WebP out. Resize and compress as you go.
Drop images here
Or choose files from your device. Convert as many as you like.
JPEG has no transparency — transparent areas become white. Quality only applies to JPEG and WebP.
Audio converter
MP3, WAV, OGG, M4A, and more in — WAV or MP3 out. Decoded and re-encoded on your device.
Drop an audio file here
Or choose one from your device.
Big files take a while — that is your device doing the work, not an upload.
Unit converter
Length, weight, temperature, volume, area, speed, time, and data. Instant, exact, offline.
Result—
Text converter
Clean it, reshape it, count it, encode it. Paste text, pick a transformation.
0 characters0 words0 lines
Color converter
HEX, RGB, and HSL with live preview, tints, shades, and contrast ratios.
Tints & shades
Contrast ratio
On white—
On black—
Background remover
Cut the subject out of a photo and get a transparent PNG. The AI model runs on your device.
Loaded from this device
Downloading the on-device model…
Drop a photo here
One image at a time. Works best on a clear subject such as a person, product, or pet.
Hair, fur, and see-through edges may not be perfect. Photos larger than 4096 px on the longest side (or 12 megapixels) are scaled down first to keep memory use safe.
Units, text, and color.
Convert measurements, clean up text, translate colors between formats. No signup, no limits.
Private by design.
No uploads, no accounts, no watermarks. Your files never leave your device.
Popular conversions
Guides for each job, with a shortcut that opens the converter ready to go.
Image converter
- PNG to JPG
- JPG to PNG
- PNG to WebP
- JPG to WebP
- WebP to JPG
- WebP to PNG
- GIF to PNG
- BMP to JPG
- Image resizer
- Remove background
Audio converter
Unit converter
- Length converter
- Weight converter
- Temperature converter
- Volume converter
- Area converter
- Speed converter
- Time converter
- Data size converter
Text converter
- Case converter
- Base64 encode / decode
- URL encode / decode
- CSV to JSON
- JSON to CSV
- Remove duplicate lines
Color converter
Frequently asked questions
Are my files uploaded anywhere?
No. Images, audio, and text are processed on your device, in your browser. Nothing is uploaded to a server.
Is Matching Sox Converter free?
Yes. It is free to use with no signup, no subscriptions, and no watermarks.
What can I convert?
Images (PNG, JPEG, WebP, GIF, BMP in; PNG, JPEG, or WebP out), audio (MP3, WAV, OGG, M4A and more in; WAV or MP3 out), units, text, and colors (HEX, RGB, HSL).
Do I need to install anything?
No install needed. It runs in any modern web browser.
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