Both formats store every pixel exactly. The difference is who can open the file afterwards.
Nothing is thrown away for once
A TIFF is usually the untouched master a scanner or an export produced, and PNG is the one
everyday format that keeps it that way: no quality setting, no re-encoding of gradients,
no loss in the lettering. Whatever detail the file had, the PNG still has.
Browsers and editors accept it
No browser draws a TIFF, but all of them draw a PNG, and so do chat apps, slide decks,
word processors and the image field of most upload forms. Converting is the shortest way
to move a scanned page from a scanner folder into the places people actually use.
Text and lines stay crisp
Scans of documents, plans, receipts and line drawings are full of hard edges, exactly what
a lossy format smears first. Keeping them as PNG means the letters stay readable at 100%
zoom, and annotating or cropping the copy later does not soften them either.
What the conversion changes
The pixels survive, the file usually gets smaller, and one page is what you get.
Only the first page is converted
A multi-page TIFF — a scanned contract, a batch straight from an office scanner — keeps
several images in one file. PNG holds one, so page one comes out and the rest stays
behind. Split the document into single-page files first when the other pages matter.
The file often gets smaller, not bigger
Uncompressed TIFF is the heaviest common way to store a picture, and PNG compresses
without loss, so a scanned page can drop to a fraction of its size while staying exact.
A TIFF that was already compressed may come out slightly larger; the result line shows
both weights before you save.
Transparency and colour are settled
TIFFs from print workflows are often CMYK or wide-gamut; the PNG is written in ordinary
sRGB so it looks right on every screen, which can shift very saturated colours a little.
Transparent areas of a TIFF come through as transparent PNG pixels, since PNG has a real
alpha channel.
Quality is ignored, size is not
There is no quality dial for PNG output — the Quality field has nothing to do. The width
field is the only real lever on weight, and it is a strong one: halving the width of a
scanned page quarters the pixels and produces a much smaller, still readable file.
How to convert TIFF to PNG
Three steps, and the lossless copy is the default.
Add the TIFF
Drag it onto the box, click to choose, or paste it with Ctrl+V (Cmd+V on a Mac). .tif and
.tiff are both accepted, up to 25 MB per file.
Set a width if the page is oversized
Leave the width empty to keep every pixel the scanner produced. A 600 dpi A4 page is about
5000 px wide, far more than a screen needs, so 1600–2000 px is usually the better archive
copy for a document. Images are never enlarged.
Download the PNG
The preview shows the result at full size, so check that small text is still legible at the
width you chose. One click saves the PNG, which any browser, viewer or document tool will
open from then on.
Three tips before you convert
Lossless does not mean weightless, so plan the copy you keep.
Use JPG when the page is only for reading
A PNG of a photo-like scan is several times heavier than a JPG of the same page, and a
document nobody will zoom into does not need the extra fidelity. The
TIFF to JPG converter gives a small file that reads perfectly
on screen; PNG earns its weight when the page will be edited, printed or archived.
Shrink the palette instead of the pixels
A black-and-white scan does not need millions of colours, and the
compression tool rebuilds a PNG on the colours it actually
uses. Documents, screenshots and diagrams often fall to a fifth of their size with no
visible difference; a photo does not, so stay with the lossless copy there.
Keep the TIFF as your master
The PNG is a convenient copy, but the TIFF is still the file the scanner wrote, with its
own profile and metadata. Store the TIFF for the long term and publish or share the PNG.
If the copy later has to be smaller and lossy, the
PNG to JPG converter makes that second export.
Frequently asked questions
Is this converter free?
Yes. Converting is free, with no account, no trial, no credit card and no watermark on the PNG you download, and the number of files is not capped. A short rate limit keeps the service usable for other visitors.
Should I choose PNG or JPG for a scan?
PNG when the page has to stay exact: text that will be read closely, line drawings, forms, archives, anything you will edit. JPG when the page only has to be legible on screen, because it is several times lighter for photo-like content. A document that will be emailed or uploaded to a size-limited form is usually better off as a JPG.
Why did only one page of my TIFF come out?
Because a PNG holds a single image. A multi-page TIFF is a stack of images inside one file, and the converter reads the first one only. Split the file into single-page TIFFs in a document or PDF tool, then convert each page separately.
How large may my TIFF be?
Up to 25 MB per file, and 50 megapixels for the image itself, with a maximum output width of 8000 px. A full-page scan at 600 dpi can pass both limits, so resample it to 300 dpi at the scanner or set a width around 2000 px here.
What happens to my files?
Files are processed on our server and not stored. The TIFF is decoded and converted as it arrives, and only the finished PNG is sent back to your browser.