filetity

JPG -> PNG · Local tool

JPG to PNG

Turn JPG photos into PNG files that will not lose any more detail.

Last updated

  1. 01 / Your device

    the file stays here

  2. 02 / Browser memory

    the work runs locally

  3. 03 / Back to you

    saved on this device

When you would use this

Situations, not settings.

A photo you are about to edit repeatedly
Every JPG save loses a little more. Converting once means the edits after it do not keep compounding the loss.
An image that needs transparency added
JPG cannot hold transparency at all, so the format has to change before the background can be cut out.
A logo or a screenshot that has gone soft
PNG will not sharpen what JPG already blurred, but it stops it getting worse from here.

How it works / no cloud

A conversion engine, not an upload form.

filetity decodes the JPG with the browser's own codec and re-encodes it as PNG, which stores every pixel exactly. Nothing is uploaded and nothing is downloaded to make it work.

  • Offline ready
  • Installable app
  • No file limit queue

Straight answers

No accordion. Nothing hidden.

Is it free?
Yes, with no watermark and no page limit.
Does it need an account?
No. There is no account system.
Is my file processed on my device?
Yes. The file is read by your browser and never uploaded. There is no server to send it to.
What formats are supported?
JPG in. PNG out, one file per image, or a ZIP when you convert several.
What are the limits?
No image count limit. Very large images are bounded by the memory your browser will give a canvas.
Does it work on mobile?
Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
Does it work offline?
Yes, after you have used it once. Your browser keeps what the tool needs, so it then works with no network connection.
Will this improve the quality of my photo?
No, and no tool can. Whatever the JPG already lost is gone. PNG stops any further loss from this point on, which is why it is the right format to edit in, but it cannot put back detail that was never stored.
Why is the PNG bigger than the JPG?
Because it is lossless. PNG stores every pixel exactly instead of approximating, and for a photograph that usually means several times the size. That is the trade you are making on purpose.
Does this give my image a transparent background?
No. PNG supports transparency, but a JPG has none to carry over, so the result is fully opaque. Removing a background is a different job from changing the format.
Is the camera information kept?
No. The photo is decoded to pixels and written out fresh, so the EXIF block with the camera model, date and GPS location is not carried into the PNG. The orientation flag is applied before writing, so the picture comes out the right way up even though the flag itself is gone.
Can I convert a whole folder at once?
Yes. Drop as many JPGs as you like and they are converted one after another, with a progress count, and arrive together as a ZIP. Memory is released after each image, so a large batch does not need every photo held at once.

How this one works

Keep working locally

7 available · more coming