Turn PNG files into TIFF in your own browser

Content last reviewed:2026-09-30

Add your PNG files and download uncompressed TIFF files with their transparency kept. In our measurement a landscape photo grew from 3.06 MB to 9.38 MB, because this kind of storage packs nothing.

Files in queue

Add PNG files on the left to start converting to TIFF.

What is PNG and what is TIFF?

PNG is a lossless format: it keeps every pixel of the image, stores full transparency and opens in every browser[1]. W3C approved the third edition of the specification on 24 June 2025. It describes lossless storage by the deflate method, 8 or 16 bits per colour channel, an alpha channel and APNG animation[2].

TIFF is a format for printing, scanning and archiving. Files in it are often stored with no compression at all, they can hold several images in one file, and Safari is the only browser that displays them[1][3].

Turning PNG into TIFF helps when a print shop or a layout program takes that format and nothing else. The file comes out far heavier: the landscape photo at 1920 × 1280 pixels grew from 3.06 MB to 9.38 MB in our measurement, because nothing is compressed.

A graphics tablet with a stylus and a mouse on a desk mat — TIFF usually goes to print or into an archive, where file weight matters less than working with the program at hand. Photo: Workperch, Unsplash.

How do you convert PNG to TIFF?

Drag your files onto the Add files area, or click it to pick them from your disk. Any number of PNG files is fine, each up to 100 MB.
Click Convert. Every finished file gets the Done status.
Save one file with Download, or all of them with Download all, which packs several into a ZIP archive. Only the extension changes, to .tiff.

The queue shows every file with its Before and After weight, the difference in percent, and the batch totals.

TIFF has no quality setting, because the converter writes it with no compression, so the file weight follows from the pixel dimensions alone. Every pixel takes four bytes: three for colour and one for opacity.

Remove takes one file out of the queue, Clear all empties it.

Everything happens in your own browser: the PNG file is read by an image element, and the TIFF is written by the UTIF.js library, which also runs in the browser.

How much does a file weigh before and after PNG to TIFF conversion?

Eight PNG files went through this converter with no quality setting, because nothing is compressed: two Unsplash photos at different resolutions, a product photo, a leaf macro, a real screenshot with text, a logo and an icon with a transparent background, and a page of text at scanner resolution. Weights are written the way the tool prints them in the queue: in kilobytes and megabytes of 1024 bytes, with the same rounding. We took the measurement ourselves on 11 September 2026 in a Chromium browser, and the result depends on the content of the image, so your file may come out differently.

Test file	Dimensions in pixels	PNG	TIFF	Change
Landscape photo	1920 × 1280	3.06 MB	9.38 MB	3.1 times larger
High-resolution camera photo	4000 × 2667	11.1 MB	40.7 MB	3.7 times larger
Product photo on a light background	1200 × 1200	2.12 MB	5.49 MB	2.6 times larger
Leaf macro with fine detail	1600 × 2015	6.52 MB	12.3 MB	89 percent larger
Screenshot with text	1440 × 900	100.5 KB	4.94 MB	50.4 times larger
Logo with a transparent background	1024 × 1024	52.1 KB	4.00 MB	78.6 times larger
Icon with transparency	256 × 256	6.57 KB	257.0 KB	39.1 times larger
Text page, as from a scanner	1654 × 2339	240.1 KB	14.8 MB	62.9 times larger

The weight of a TIFF follows straight from the pixel dimensions: four bytes per pixel plus the header. The weight of your own file sits in the Before and After fields of the queue.

Why is a TIFF file so heavy?

The converter writes TIFF with no compression, so every pixel takes four bytes in the file: three for colour and one for opacity. Hence the landscape photo comes out 3.1 times larger and the leaf macro with fine detail comes out 89 percent larger. You can work the weight out from the dimensions: an image of 1920 by 1280 pixels is over two and a half million pixels, which is just under ten megabytes of data.

The largest difference shows on images that PNG packs brilliantly. The screenshot with text (1440 × 900) comes out 50.4 times larger, the logo with a transparent background comes out 78.6 times larger, and the text page, as from a scanner comes out 62.9 times larger. A flat background costs a few bytes in PNG, and in an uncompressed TIFF exactly as much as an image full of detail.

If the file only has to go to print as a photograph, the PNG to JPG converter or a document from the PNG to PDF converter is usually enough. The way back is the TIFF to PNG converter, and you set smaller pixel dimensions in the image editor.

PNG versus TIFF: how do the formats differ?

The table gathers the properties that decide which format suits print and which suits an archive.

Property	PNG	TIFF
Storage from our converter	lossless, by the deflate method	lossless, with no compression at all
Transparency	yes, a full alpha channel	yes, a full alpha channel
Bits per colour channel	8 or 16	8 from our converter
Several images in one file	no	yes
Browser support	every version of every browser	Safari only
Typical use	graphics on a page	print, scanning, archiving

TIFF according to the article on the format[3] and the MDN guide[1], PNG according to the W3C specification[2]. We checked the absence of compression and the number of bits on files from our own converter.

Which PNG files does the converter take?

We checked every row on files put through the converter on 15 September 2026. The right column says what you get.

The file you add	What the converter writes in TIFF
A photo or graphic saved as PNG	an uncompressed TIFF at the same pixel dimensions
A PNG with a transparent background	a TIFF with a transparent background, because the format carries an alpha channel
A PNG with a semi-transparent shadow or glow	a TIFF with the semi-transparent shadow kept as it was
A PNG with 16 bits per colour channel	a TIFF with 8 bits per channel, because that is what the browser canvas hands over
An animated PNG (APNG)	the first frame of the animation, and the queue carries a note: This file is animated, so only the first frame is saved.
A file with EXIF data, for example a rotated photo	a TIFF with no EXIF data, but in the orientation stored in that data
A file larger than 100 MB	the message File is too large (max 100 MB).
A damaged file, or text with a .png extension	the Error status and the message Failed to load the image.

Files in other formats are skipped as they are added, with the message: Add PNG files. Files in other formats were skipped.

What happens to transparency, colours and EXIF data?

Transparency reaches the TIFF in full, semi-transparent pixels included. The file also carries a tag saying that opacity is stored separately from colour, so a program that reads that tag will not brighten the semi-transparent areas.

The TIFF file is written here by the UTIF.js library running in the browser, because a browser canvas does not write this format. One PNG file gives one image inside the TIFF; several images in a single file are put together in a graphics program.

EXIF data does not reach the TIFF file, and the orientation stored in that data is applied. If several pages have to become one document, a PDF from the PNG to PDF converter is usually the easier route.

Convert other files to TIFF

JPG to TIFF WebP to TIFF SVG to TIFF BMP to TIFF AVIF to TIFF HEIC to TIFF

Convert PNG to other formats

PNG to JPG PNG to WebP PNG to BMP PNG to AVIF PNG to GIF PNG to PDF PNG to Base64

Sources

Image file type and format guide — MDN Web Docs
Portable Network Graphics (PNG) Specification (Third Edition) — W3C
TIFF — Wikipedia

The file sizes in the tables were measured by running finished images through this converter in a browser, and we report them the way the tool counts them. What the page says about either format rests on the sources listed above.

Content last reviewed: September 30, 2026 · written and checked by the Arteon team

Common questions about turning PNG into TIFF

How do you turn PNG into TIFF for free?

Drag your PNG files onto the Add files area, click Convert and save the result with Download all. The converter is free, needs no account, and your files stay on your own device.

Why does the TIFF weigh so much more?

Because the converter writes it with no compression: every pixel is four bytes. In our measurement the landscape photo comes out 3.1 times larger and the logo with a transparent background comes out 78.6 times larger, because a flat background costs as much here as fine detail.

Does TIFF keep a transparent background?

Yes. TIFF carries a full alpha channel, and the file gets a tag saying that opacity is stored separately from colour.

Does the image quality drop?

Not with an ordinary PNG file: the storage is lossless, so every pixel stays as it was. The only change is with files that hold 16 bits per colour channel, because those come out with 8 bits.

Why can I not see the TIFF in a browser?

Because Safari is the only browser that displays the format. You open the file in a graphics program, in the system preview, or in a layout program.

Can I convert many files at once?

Yes. The queue takes any number of files, each up to 100 MB, and you can add them in batches because it keeps the earlier ones. The Download all button packs the finished files into a single ZIP archive.

Will several PNG files make one multi-page TIFF?

No, every PNG file gives its own TIFF with one image. You assemble a single document out of several images in the PNG to PDF converter.

Are the files uploaded to a server?

No. The PNG file is read by the browser on your own device, and the TIFF is written by a library running in that same browser. Nothing of them is left once you close the page.